Implement INotifyPropertyChanged for brushes.

- Refactored DirectRendering class to support new IDirectRendering interface and manage textures directly.
- Enhanced ImmediateMode to utilize ImmediateVertex struct for immediate rendering calls.
- Updated Image class to use IDirectRendering for texture creation.
- Modified test application to demonstrate immediate mode rendering with new structures.
- Removed obsolete code related to previous rendering abstractions.

Dashboard.Common/Box2d.cs

@@ -1,14 +1,15 @@
-using System.ComponentModel.DataAnnotations;
+using System.Diagnostics;
 using System.Drawing;
 using System.Numerics;
 
 namespace Dashboard
 {
+    [DebuggerDisplay("\\{{Min}; {Max}\\}")]
     public readonly record struct Box2d(Vector2 Min, Vector2 Max)
     {
         public float Left => Min.X;
-        public float Right => Max.X;
         public float Top => Min.Y;
+        public float Right => Max.X;
         public float Bottom => Max.Y;
 
         public Vector2 Size => Max - Min;
@@ -24,19 +25,43 @@ namespace Dashboard
         {
         }
 
-        public static Box2d FromPositionAndSize(Vector2 position, Vector2 size, Origin anchor = Origin.Center)
+        public static Box2d FromPositionAndSize(Vector2 position, Vector2 size, Origin anchor = Origin.Center) =>
-        {
+            // Hoping the redundent additions+muls become conditional fma instructions.
-            Vector2 half = size * 0.5f;
+            anchor switch
-            switch (anchor)
             {
-                case Origin.Center:
+                Origin.Left => new Box2d(
-                    return new Box2d(position - half, position + half);
+                                        position + (size * new Vector2(0.0f, -0.5f)),
-                case Origin.TopLeft:
+                                        position + (size * new Vector2(1.0f, 0.5f))
-                    return new Box2d(position, position + size);
+                                    ),
-                default:
+                Origin.TopLeft => new Box2d(position, position + size),
-                    throw new NotImplementedException();
+                Origin.Top => new Box2d(
-            }
+                                        position + (size * new Vector2(-0.5f, 0f)),
-        }
+                                        position + (size * new Vector2(0.5f, 1f))),
+                Origin.TopRight => new Box2d(
+                                        position + (size * new Vector2(-1.0f, 0.0f)),
+                                        position + (size * new Vector2(0.0f, 1.0f))
+                                    ),
+                Origin.Right => new Box2d(
+                                        position + (size * new Vector2(-1.0f, -0.5f)),
+                                        position + (size * new Vector2(0.0f, 0.5f))
+                                    ),
+                Origin.BottomRight => new Box2d(
+                                        position + (size * new Vector2(-1.0f, -1.0f)),
+                                        position + (size * new Vector2(0.0f, 0.0f))
+                                    ),
+                Origin.Bottom => new Box2d(
+                                        position + (size * new Vector2(-0.5f, -1.0f)),
+                                        position + (size * new Vector2(0.5f, 0.0f))
+                                    ),
+                Origin.BottomLeft => new Box2d(
+                                        position + (size * new Vector2(0.0f, -1.0f)),
+                                        position + (size * new Vector2(1.0f, 0.0f))
+                                    ),
+                Origin.Center => new Box2d(
+                                        position + (size * new Vector2(-0.5f, -0.5f)),
+                                        position + (size * new Vector2(0.5f, 0.5f))),
+                _ => throw new ArgumentOutOfRangeException(nameof(anchor)),
+            };
 
         public static Box2d Union(Box2d left, Box2d right)
         {

Dashboard.Common/Box3d.cs

@@ -1,8 +1,9 @@
-using System.Drawing;
+using System.Diagnostics;
 using System.Numerics;
 
 namespace Dashboard
 {
+    [DebuggerDisplay("\\{{Min}; {Max}\\}")]
     public readonly record struct Box3d(Vector3 Min, Vector3 Max)
     {
         public float Left => Min.X;

Dashboard.Common/Collections/HashList.cs

@@ -1,7 +1,6 @@
 using System.Collections;
-using System.Collections.Generic;
 
-namespace Dashboard
+namespace Dashboard.Collections
 {
     public class HashList<T> : IReadOnlyList<T>
         where T : notnull

Dashboard.Common/Collections/TypeDictionary.cs

@@ -82,7 +82,7 @@ namespace Dashboard.Collections
 
         public void Clear() => _objects.Clear();
 
-        public IEnumerator<T> GetEnumerator() => _objects.Values.GetEnumerator();
+        public IEnumerator<T> GetEnumerator() => _objects.Values.Distinct().GetEnumerator();
         IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
     }
 

Dashboard.Common/Dashboard.Common.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net10.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
         <RootNamespace>Dashboard</RootNamespace>

Dashboard.Common/Drawing/Brush.cs

@@ -0,0 +1,111 @@
+using System.Collections.Specialized;
+using System.ComponentModel;
+using System.Drawing;
+using System.Runtime.CompilerServices;
+
+namespace Dashboard.Drawing
+{
+    public abstract class Brush : INotifyPropertyChanged, ICloneable
+    {
+        public event PropertyChangedEventHandler? PropertyChanged;
+
+        public virtual object Clone()
+        {
+            return MemberwiseClone();
+        }
+
+        protected void SetField<T>(ref T field, T value, [CallerMemberName] string property = "")
+        {
+            field = value;
+            OnPropertyChanged(property);
+        }
+
+        protected virtual void OnPropertyChanged(string property)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(property));
+        }
+    }
+
+    public sealed class SolidColorBrush(Color color) : Brush
+    {
+        public Color Color { get; } = color;
+    }
+
+    public class ImageBrush(Image image) : Brush
+    {
+        public Image Image 
+        {
+            get;
+            set => SetField(ref field, value);
+        } = image;
+
+        public Box2d TextureCoordinates
+        {
+            get;
+            set => SetField(ref field, value);
+        } = new Box2d(0, 0, 1, 1);
+    }
+
+    public class NinePatchImageBrush(Image image) : Brush
+    {
+        public Image Image
+        { 
+            get;
+            set => SetField(ref field, value);
+        } = image;
+
+        public Box2d CenterCoordinates
+        {
+            get;
+            set => SetField(ref field, value);
+        } = new Box2d(0, 0, 1, 1);
+
+        public Extents Extents
+        {
+            get;
+            set => SetField(ref field, value);
+        } = Extents.None;
+    }
+
+    public class GradientBrush : Brush
+    {
+        public Gradient Gradient 
+        {
+            get;
+            set
+            {
+                Unsubscribe(field);
+                Subscribe(value);
+
+                SetField(ref field, value);
+            }
+        }
+
+        public GradientBrush(Gradient gradient)
+        {
+            Gradient = gradient;
+        }
+
+        private void Subscribe(Gradient gradient)
+        {
+            gradient.PropertyChanged   += GradientPropertyChanged;
+            gradient.CollectionChanged += GradientCollectionChanged;
+        }
+
+        private void Unsubscribe(Gradient? gradient)
+        {
+            gradient?.PropertyChanged   -= GradientPropertyChanged;
+            gradient?.CollectionChanged -= GradientCollectionChanged;
+        }
+
+        private void GradientCollectionChanged(object? sender, NotifyCollectionChangedEventArgs e)
+        {
+            OnPropertyChanged(nameof(Gradient));
+        }
+
+        private void GradientPropertyChanged(object? sender, PropertyChangedEventArgs e)
+        {
+            OnPropertyChanged(nameof(Gradient));
+        }
+    }
+}

Dashboard.Common/Drawing/DrawCall.cs

@@ -0,0 +1,242 @@
+using System.Collections.Immutable;
+using System.Diagnostics.CodeAnalysis;
+using System.Drawing;
+using System.Numerics;
+
+namespace Dashboard.Drawing
+{
+    public enum MeshPrimitive
+    {
+        Point,
+        Line,
+        Triangle,
+        TriangleFan,
+        TriangleStrip,
+    }
+
+    public enum WindingOrder
+    {
+        Clockwise,
+        Counterclockwise,
+    }
+
+    public enum FaceCulling
+    {
+        None,
+        Front,
+        Back,
+        Both,
+    }
+
+    public enum VertexAttributeType
+    {
+        UnsignedByte,
+        UnsignedShort,
+        UnsignedInt,
+        Byte,
+        Short,
+        Int,
+        Half,
+        Float,
+        Double,
+    }
+
+    public enum IndexType
+    {
+        UnsignedShort,
+        UnsignedInt,
+        UnsignedLong,
+        Short,
+        Int,
+    }
+
+    public enum BlendFunction
+    {
+        One,
+        Zero,
+        SourceAlpha,
+        OneMinusSourceAlpha,
+        DestinationAlpha,
+        OneMinusDestinationAlpha,
+        SourceColor,
+        OneMinusSourceColor,
+        DestinationColor,
+        OneMinusDestinationColor,
+        ConstantColor,
+        OneMinusConstantColor,
+        ConstantAlpha,
+        OneMinusConstantAlpha,
+    }
+
+    public enum BlendEquation
+    {
+        Add,
+        Subtract,
+        ReverseSubtract,
+        Min,
+        Max,
+    }
+
+    public enum TestFunction
+    {
+        Never,
+        LessThan,
+        LessThanOrEqual,
+        Equal,
+        NotEqual,
+        GreaterThanOrEqual,
+        Greater,
+        Always,
+    }
+
+    public enum StencilOperation
+    {
+        Keep,
+        Zero,
+        Replace,
+        Increment,
+        UncheckedIncrement,
+        Decrement,
+        UncheckedDecrement,
+        Invert,
+    }
+
+    public enum UniformType
+    {
+        U1,
+        U2,
+        U3,
+        U4,
+        I1,
+        I2,
+        I3,
+        I4,
+        F1,
+        F2,
+        F3,
+        F4,
+        Mat2,
+        Mat3,
+        Mat4,
+        Buffer,
+    }
+
+    public readonly record struct DepthMode(bool Test, bool Mask, TestFunction Function)
+    {
+        public static readonly DepthMode Off = new DepthMode(false, false, TestFunction.Always);
+        public static readonly DepthMode WriteOnly = new DepthMode(false, true, TestFunction.LessThan);
+        public static readonly DepthMode Equal = new DepthMode(true, false, TestFunction.Equal);
+        public static readonly DepthMode Enabled = new DepthMode(true, true, TestFunction.LessThan);
+    }
+
+    public readonly record struct BlendFactor(BlendFunction Source, BlendFunction Destination)
+    {
+        public static readonly BlendFactor Default =
+            new BlendFactor(BlendFunction.SourceAlpha, BlendFunction.OneMinusSourceAlpha);
+    }
+
+    public readonly record struct BlendMode(bool Enabled, BlendFactor Color, BlendFactor Alpha)
+    {
+        [MemberNotNullWhen(false, nameof(Unified), nameof(UnifiedEquation))]
+        public bool IsSeparate => Color != Alpha;
+        public BlendFactor? Unified => IsSeparate ? null : Color;
+        public BlendEquation? UnifiedEquation => IsSeparate ? null : ColorEquation;
+        public BlendEquation ColorEquation { get; init; } = BlendEquation.Add;
+        public BlendEquation AlphaEquation { get; init; } = BlendEquation.Add;
+        public Color Constant { get; init; } = System.Drawing.Color.Black;
+
+        public BlendMode(BlendFunction source, BlendFunction destination)
+            : this(true, new BlendFactor(source, destination), new BlendFactor(source, destination))
+        {
+        }
+
+        public static readonly BlendMode Off = new BlendMode(false, BlendFactor.Default, BlendFactor.Default);
+
+        public static readonly BlendMode Normal =
+            new BlendMode(true, BlendFactor.Default, BlendFactor.Default);
+    }
+
+    public readonly record struct StencilMode(bool Enabled, TestFunction Function)
+    {
+        public int Reference { get; init; } = 0;
+        public int Mask { get; init; } = ~0;
+        public StencilOperation Pass { get; init; } = StencilOperation.Keep;
+        public StencilOperation DepthFail { get; init; } = StencilOperation.Keep;
+        public StencilOperation Fail { get; init; } = StencilOperation.Keep;
+
+        public static readonly StencilMode Off = new StencilMode(false, TestFunction.Always);
+    }
+
+    public record struct VertexAttribute(
+        int Location,
+        int Components,
+        VertexAttributeType Type,
+        long Offset,
+        long Stride)
+    {
+        public int Divisor { get; init; } = 1;
+    }
+
+    public record VertexSpecification(
+        ImmutableList<VertexAttribute> Attributes,
+        ImmutableList<IBuffer?> VertexBuffers
+    )
+    {
+        public IBuffer? ElementBuffer { get; init; } = null;
+    }
+
+    public record struct UniformDescriptor(int Location, UniformType Type, long Offset, long Size);
+
+    public struct PipelineState()
+    {
+        public Box2d ViewportRegion { get; init; } = new Box2d(Vector2.Zero, Vector2.PositiveInfinity);
+        public Box2d ScissorRegion { get; init; } = new Box2d(Vector2.PositiveInfinity, Vector2.PositiveInfinity);
+        public WindingOrder FrontFace { get; init; } = WindingOrder.Counterclockwise;
+        public FaceCulling CullMode { get; init; } = FaceCulling.Back;
+        public BlendMode BlendMode { get; init; } = BlendMode.Normal;
+        public DepthMode DepthMode { get; init; } = DepthMode.Enabled;
+        public StencilMode StencilMode { get; init; } = StencilMode.Off;
+        public bool RedMask { get; init; } = true;
+        public bool GreenMask { get; init; } = true;
+        public bool BlueMask { get; init; } = true;
+        public bool AlphaMask { get; init; } = true;
+        public float PointSize { get; init; }= 1.0f;
+        public float LineWidth { get; init; }= 1.0f;
+    }
+
+    public struct DrawCall(MeshPrimitive primitive, VertexSpecification vertexSpec, int first, int count)
+    {
+        public IShader? ShaderPipeline { get; init; }
+        public PipelineState PipelineState { get; init; } = new PipelineState();
+        public VertexSpecification VertexSpecification { get; init; } = vertexSpec;
+
+        public MeshPrimitive Primitive { get; init; } = primitive;
+        public int First { get; init; } = first;
+        public int Count { get; init; } = count;
+        public int BaseVertex { get; init; } = 0;
+        public long Offset { get; init; } = 0;
+        public bool EnableRestart { get; init; } = false;
+        public long RestartIndex { get; init; } = -1;
+
+        public Box2d ViewportRegion => PipelineState.ViewportRegion;
+        public Box2d ScissorRegion => PipelineState.ScissorRegion;
+        public WindingOrder FrontFace => PipelineState.FrontFace;
+        public FaceCulling CullMode => PipelineState.CullMode;
+        public BlendMode BlendMode => PipelineState.BlendMode;
+        public DepthMode DepthMode => PipelineState.DepthMode;
+        public StencilMode StencilMode => PipelineState.StencilMode;
+        public bool RedMask => PipelineState.RedMask;
+        public bool GreenMask => PipelineState.GreenMask;
+        public bool BlueMask => PipelineState.BlueMask;
+        public bool AlphaMask => PipelineState.AlphaMask;
+        public float PointSize => PipelineState.PointSize;
+        public float LineWidth => PipelineState.LineWidth;
+
+        public List<ITexture?> Textures { get; init; } = [];
+        public List<UniformDescriptor> Uniforms { get; init; } = [];
+        public IndexType IndexType { get; init; } = IndexType.UnsignedShort;
+
+        public ReadOnlyMemory<byte> UniformData { get; init; } = ReadOnlyMemory<byte>.Empty;
+        public IBuffer? UniformBuffer { get; init; }
+    }
+}

Dashboard.Common/Drawing/Font.cs

@@ -0,0 +1,42 @@
+using System;
+using System.IO;
+using System.Net.Mime;
+using Dashboard.Pal;
+
+namespace Dashboard.Drawing
+{
+    public class Font(IFont iFont) : IFont
+    {
+        public IFont Base => iFont;
+        public string Family => iFont.Family;
+        public FontWeight Weight => iFont.Weight;
+        public FontSlant Slant => iFont.Slant;
+        public FontStretch Stretch => iFont.Stretch;
+
+        public void Dispose()
+        {
+            iFont.Dispose();
+        }
+
+        public static Font Create(Stream stream)
+        {
+            IFont iFont = Application.Current.ExtensionRequire<IFontLoader>().Load(stream);
+
+            return new Font(iFont);
+        }
+
+        public static Font Create(FontInfo info)
+        {
+            IFont iFont = Application.Current.ExtensionRequire<IFontLoader>().Load(info);
+
+            return new Font(iFont);
+        }
+
+        public static Font Create(string path)
+        {
+            IFont iFont = Application.Current.ExtensionRequire<IFontLoader>().Load(path);
+
+            return new Font(iFont);
+        }
+    }
+}

Dashboard.Common/Drawing/Gradient.cs

@@ -1,9 +1,11 @@
 using System.Collections;
-using System.Collections.Generic;
+using System.Collections.Specialized;
+using System.ComponentModel;
 using System.Drawing;
 using System.Numerics;
+using System.Runtime.CompilerServices;
 
-namespace Dashboard
+namespace Dashboard.Drawing
 {
     /// <summary>
     /// Enumeration of the kinds of gradients available.
@@ -25,29 +27,41 @@ namespace Dashboard
     /// </summary>
     /// <param name="Position">The position of the gradient stop. Must be [0,1].</param>
     /// <param name="Color">The color value for the stop.</param>
-    public record struct GradientStop(float Position, Color Color);
+    public readonly record struct GradientStop(float Position, Color Color);
 
     /// <summary>
     /// Represents a linear gradient.
     /// </summary>
-    public struct Gradient : ICollection<GradientStop>, ICloneable, IEquatable<Gradient>
+    public class Gradient : ICollection<GradientStop>, ICloneable, IEquatable<Gradient>, INotifyPropertyChanged, INotifyCollectionChanged
     {
         private readonly List<GradientStop> _stops = new List<GradientStop>();
 
         /// <summary>
         /// Gradient type.
         /// </summary>
-        public GradientType Type { get; set; } = GradientType.Axial;
+        public GradientType Type
+        {
+            get;
+            set => SetField(ref field, value);
+        } = GradientType.Axial;
 
         /// <summary>
         /// First gradient control point.
         /// </summary>
-        public Vector2 C0 { get; set; } = Vector2.Zero;
+        public Vector2 C0
+        { 
+            get;
+            set => SetField(ref field, value);
+        } = Vector2.Zero;
 
         /// <summary>
         /// Second gradient control point.
         /// </summary>
-        public Vector2 C1 { get; set; } = Vector2.One;
+        public Vector2 C1
+        { 
+            get;
+            set => SetField(ref field, value);
+        } = Vector2.One;
 
         /// <summary>
         /// Number of stops in a gradient.
@@ -69,6 +83,10 @@ namespace Dashboard
             }
         }
 
+        public event PropertyChangedEventHandler? PropertyChanged;
+        public event NotifyCollectionChangedEventHandler? CollectionChanged;
+
+
         public Gradient()
         {
         }
@@ -164,11 +182,13 @@ namespace Dashboard
                 index = _stops.Count;
 
             _stops.Insert(index, item);
+            OnCollectionChanged(NotifyCollectionChangedAction.Add);
         }
 
         public void Clear()
         {
             _stops.Clear();
+            OnCollectionChanged(NotifyCollectionChangedAction.Reset);
         }
 
         public bool Contains(GradientStop item)
@@ -183,30 +203,51 @@ namespace Dashboard
 
         public bool Remove(GradientStop item)
         {
-            return _stops.Remove(item);
+            if (!_stops.Remove(item))
+                return false;
+
+            OnCollectionChanged(NotifyCollectionChangedAction.Remove);
+            return true;
         }
 
         public void RemoveAt(int index)
         {
             _stops.RemoveAt(index);
+            OnCollectionChanged(NotifyCollectionChangedAction.Remove);
         }
 
         public override int GetHashCode()
         {
             HashCode code = new HashCode();
+
             code.Add(Count);
+            code.Add(Type);
+            code.Add(C0);
+            code.Add(C1);
+
             foreach (GradientStop item in this)
                 code.Add(item.GetHashCode());
             return code.ToHashCode();
         }
 
-        public bool Equals(Gradient other)
+        public bool Equals(Gradient? other)
         {
             return
+                other != null &&
                 Type == other.Type &&
                 C0 == other.C0 &&
                 C1 == other.C1 &&
-                _stops.Equals(other._stops);
+                _stops.SequenceEqual(other._stops);
+        }
+
+        private bool NotEquals(Gradient? other)
+        {
+            return
+                other == null ||
+                Type != other.Type ||
+                C0 != other.C0 ||
+                C1 != other.C1 ||
+                !_stops.SequenceEqual(other._stops);
         }
 
         public override bool Equals(object? obj)
@@ -214,14 +255,30 @@ namespace Dashboard
             return obj is Gradient other && Equals(other);
         }
 
-        public static bool operator ==(Gradient left, Gradient right)
+        public static bool operator ==(Gradient? left, Gradient? right)
         {
-            return left.Equals(right);
+            return left?.Equals(right) ?? right == null;
         }
 
-        public static bool operator !=(Gradient left, Gradient right)
+        public static bool operator !=(Gradient? left, Gradient? right)
         {
-            return !left.Equals(right);
+            return left?.NotEquals(right) ?? right != null;
+        }
+
+        protected void SetField<T>(ref T field, T value, [CallerMemberName] string name = "")
+        {
+            field = value;
+            OnPropertyChanged(name);
+        }
+
+        protected virtual void OnPropertyChanged(string property)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(property));
+        }
+
+        protected virtual void OnCollectionChanged(NotifyCollectionChangedAction action)
+        {
+            CollectionChanged?.Invoke(this, new NotifyCollectionChangedEventArgs(action));
         }
     }
 }

Dashboard.Common/Drawing/IBuffer.cs

@@ -0,0 +1,43 @@
+namespace Dashboard.Drawing
+{
+    public enum BufferAccessPattern
+    {
+        /// <summary>
+        /// No hint given. Not recommended.
+        /// </summary>
+        DontCare,
+
+        /// <summary>
+        /// For buffers which have a long lifetime, but the contents are initialized once.
+        /// </summary>
+        Static,
+
+        /// <summary>
+        /// For buffers which have a long lifetime, but the contents can be updated every frame.
+        /// </summary>
+        Stream,
+
+        /// <summary>
+        /// For buffers which have a short lifetime, used for streaming resources to the graphics hardware.
+        /// </summary>
+        Upload,
+
+        /// <summary>
+        /// For buffers which have a short lifetime, used for streaming resources from the graphics hardware.
+        /// </summary>
+        Download,
+    }
+
+
+    public interface IBuffer : IDisposable
+    {
+        public BufferAccessPattern AccessPattern { get; }
+        public long Size { get; }
+
+        void Reallocate(long newSize);
+        Span<T> Map<T>(long offset, int count = -1) where T : unmanaged;
+        void Unmap();
+        void Read<T>(long offset, Span<T> span) where T : unmanaged;
+        void Write<T>(long offset, ReadOnlySpan<T> span) where T : unmanaged;
+    }
+}

Dashboard.Common/Drawing/IDeviceContextBase.cs

@@ -0,0 +1,33 @@
+using System.Drawing;
+using System.Numerics;
+using Dashboard.Pal;
+
+namespace Dashboard.Drawing
+{
+    public interface IDeviceContextBase : IDeviceContextExtension
+    {
+        Box2d ClipRegion { get; }
+        Box2d ScissorRegion { get; }
+        Matrix4x4 Transforms { get; }
+        float Scale { get; }
+        float ScaleOverride { get; set; }
+
+        void ResetClip();
+        void PushClip(Box2d clipRegion);
+        void PopClip();
+
+        void ResetScissor();
+        void PushScissor(Box2d scissorRegion);
+        void PopScissor();
+
+        void ResetTransforms();
+        void PushTransforms(in Matrix4x4 matrix);
+        void PopTransforms();
+
+        void ClearColor(Color color);
+        void ClearDepth();
+
+        int IncrementZ();
+        int DecrementZ();
+    }
+}

Dashboard.Common/Drawing/IDirectRendering.cs

@@ -0,0 +1,50 @@
+using Dashboard.Pal;
+
+namespace Dashboard.Drawing
+{
+    /// <summary>
+    /// This extension provides direct access to the backend rendering pipeline without writing with a higher level
+    /// abstraction than the rendering backend.
+    /// </summary>
+    public interface IDirectRendering : IDeviceContextExtension
+    {
+        /// <summary>
+        /// Create a shader program.
+        /// </summary>
+        /// <typeparam name="T">Type of the shader create info object.</typeparam>
+        /// <param name="createInfo">An object which describes how the shader is created.</param>
+        /// <returns>A shader program object.</returns>
+        /// <seealso cref="SpirvShaderCreateInfo"/> 
+        /// <seealso cref="GlslShaderCreateInfo"/>
+        /// <seealso cref="GlslComputeShaderCreateInfo"/>
+        IShader CreateShader<T>(T createInfo) where T : IShaderCreateInfo;
+
+        /// <summary>
+        /// Create a texture object.
+        /// </summary>
+        /// <param name="type">Type of texture to create.</param>
+        /// <returns>An empty texture object.</returns>
+        ITexture CreateTexture(TextureType type);
+
+        /// <summary>
+        /// Create a buffer object.
+        /// </summary>
+        /// <param name="pattern">Buffer access pattern hint.</param>
+        /// <param name="size">Initial capacity of the buffer in bytes.</param>
+        /// <returns>An empty buffer object.</returns>
+        IBuffer CreateBuffer(BufferAccessPattern pattern, long size);
+
+        /// <summary>
+        /// Enqueue a draw call.
+        /// </summary>
+        /// <param name="drawCall">The draw call to enqueue.</param>
+        void Draw(DrawCall drawCall);
+    }
+
+    [Obsolete("Use IDirectRendering instead.")]
+    public interface ITextureExtension : IDeviceContextExtension
+    {
+        /// <inheritdoc cref="IDirectRendering.CreateTexture(TextureType)"/>
+        ITexture CreateTexture(TextureType type);
+    }
+}

Dashboard.Common/Drawing/IFontLoader.cs

@@ -0,0 +1,27 @@
+using Dashboard.Pal;
+
+namespace Dashboard.Drawing
+{
+    public interface IFont : IDisposable
+    {
+        string Family { get; }
+        FontWeight Weight { get; }
+        FontSlant Slant { get; }
+        FontStretch Stretch { get; }
+    }
+
+    public record struct FontInfo(string Family, FontWeight Weight = FontWeight.Normal,
+        FontSlant Slant = FontSlant.Normal, FontStretch Stretch = FontStretch.Normal) : IFont
+    {
+        public void Dispose()
+        {
+        }
+    }
+
+    public interface IFontLoader : IApplicationExtension
+    {
+        IFont Load(FontInfo info);
+        IFont Load(string path);
+        IFont Load(Stream stream);
+    }
+}

Dashboard.Common/Drawing/IImageLoader.cs

@@ -0,0 +1,61 @@
+using Dashboard.Pal;
+
+namespace Dashboard.Drawing
+{
+    public record ImageData(
+        TextureType Type,
+        PixelFormat Format,
+        int Width,
+        int Height,
+        byte[] Bitmap)
+    {
+        public int Depth { get; init; } = 1;
+        public int Levels { get; init; } = 1;
+        public bool Premultiplied { get; init; } = false;
+        public int Alignment { get; init; } = 4;
+
+        public long GetLevelOffset(int level)
+        {
+            ArgumentOutOfRangeException.ThrowIfLessThan(level, 0, nameof(level));
+            ArgumentOutOfRangeException.ThrowIfGreaterThan(level, Levels, nameof(level));
+            ArgumentOutOfRangeException.ThrowIfGreaterThan(level, Math.ILogB(Math.Max(Width, Height)));
+
+            long offset = 0;
+
+            long row = Width * Format switch
+            {
+                PixelFormat.R8I => 1,
+                PixelFormat.R16F => 2,
+                PixelFormat.Rg8I => 2,
+                PixelFormat.Rg16F => 4,
+                PixelFormat.Rgb8I => 3,
+                PixelFormat.Rgb16F => 6,
+                PixelFormat.Rgba8I => 4,
+                PixelFormat.Rgba16F => 8,
+            };
+
+            row += Alignment - (row % Alignment);
+            long plane = row * Height;
+            long volume = plane * Depth;
+
+            for (int i = 0; i < level; i++)
+            {
+                if (Depth == 1)
+                {
+                    offset += plane / (1 << i) / (1 << i);
+                }
+                else
+                {
+                    offset += volume / (1 << i) / (1 << i) / (1 << i);
+                }
+            }
+
+            return offset;
+        }
+    }
+
+    public interface IImageLoader : IApplicationExtension
+    {
+        public ImageData LoadImageData(Stream stream);
+    }
+}

Dashboard.Common/Drawing/IImmediateMode.cs

@@ -0,0 +1,68 @@
+using System.Data;
+using System.Drawing;
+using System.Numerics;
+using System.Runtime.InteropServices;
+using Dashboard.Layout;
+using Dashboard.Pal;
+
+namespace Dashboard.Drawing
+{
+    public record struct RectangleDrawInfo(Vector2 Position, Box2d Box, Brush Fill, Brush? Border = null);
+
+    [StructLayout(LayoutKind.Explicit, Size = Size)]
+    public struct ImmediateVertex()
+    {
+        [field: FieldOffset(PosOffset)]
+        public Vector3 Position { get; init; }= Vector3.Zero;
+        
+        [field: FieldOffset(TexCoordsOffset)]
+        public Vector2 TexCoords { get; init; } = Vector2.Zero;
+        
+        [field: FieldOffset(ColorOffset)]
+        public Vector4 Color { get; init; } = Vector4.One;
+
+        public ImmediateVertex(Vector3 position, Vector2 texCoords, Vector4 color) : this()
+        {
+            Position = position;
+            TexCoords = texCoords;
+            Color = color;
+        }
+
+        public ImmediateVertex(Vector3 position, Vector2 texCoords, Color color) 
+            : this(
+                position,
+                texCoords,
+                new Vector4(color.R / 255f, color.G / 255f, color.B / 255f, color.A / 255f))
+        {
+        }
+
+        public const int Size = 16 * sizeof(float);
+        public const int PosOffset = 0 * sizeof(float);
+        public const int TexCoordsOffset = 4 * sizeof(float);
+        public const int ColorOffset = 8 * sizeof(float);
+    }
+
+    public struct ImmediateDrawCall(MeshPrimitive primitive, ReadOnlyMemory<ImmediateVertex> vertices)
+    {
+        public MeshPrimitive Primitive { get; init; } = primitive;
+        public ReadOnlyMemory<ImmediateVertex> Vertices { get; init; } = vertices;
+        public PipelineState PipelineState { get; init; } = new PipelineState();
+        public Matrix4x4 Transforms { get; init; } = Matrix4x4.Identity;
+        public ITexture? Texture { get; init; } = null;
+    }
+
+    public interface IImmediateMode : IDeviceContextExtension
+    {
+        /// <summary>
+        /// Enqueue a draw with the immediate mode shader pipeline.
+        /// </summary>
+        /// <param name="call">Information about this draw call.</param>
+        void DrawImmediate(ImmediateDrawCall call);
+
+        // TODO: move these to their own extension?
+        void Line(Vector2 a, Vector2 b, float width, float depth, Vector4 color);
+        void Rectangle(Box2d rectangle, float depth, Vector4 color);
+        void Rectangle(in RectangleDrawInfo rectangle);
+        void Image(Box2d rectangle, Box2d uv, float depth, ITexture texture);
+    }
+}

Dashboard.Common/Drawing/IShader.cs

@@ -0,0 +1,21 @@
+using System.Collections.Immutable;
+
+namespace Dashboard.Drawing
+{
+    /// <summary>
+    /// Base interface for creating shader pipelines.
+    /// </summary>
+    public interface IShaderCreateInfo
+    {
+    }
+
+    public readonly record struct ShaderMappingProperty(string Name, int Index);
+
+    public interface IShader : IDisposable
+    {
+        public ImmutableList<ShaderMappingProperty> Attributes { get; }
+        public ImmutableList<ShaderMappingProperty> Uniforms { get; }
+        public ImmutableList<ShaderMappingProperty> Blocks { get; }
+        public ImmutableList<ShaderMappingProperty> Textures { get; }
+    }
+}

Dashboard.Common/Drawing/ITextRenderer.cs

@@ -0,0 +1,12 @@
+using System.Numerics;
+using Dashboard.Pal;
+
+namespace Dashboard.Drawing
+{
+
+    public interface ITextRenderer : IDeviceContextExtension
+    {
+        Box2d MeasureText(IFont font, float size, string text);
+        void DrawText(Vector2 position, Vector4 color, float size, IFont font, string text);
+    }
+}

Dashboard.Common/Drawing/ITexture.cs

@@ -1,12 +1,7 @@
 using System.Drawing;
 
-namespace Dashboard.Pal
+namespace Dashboard.Drawing
 {
-    public interface ITextureExtension : IDeviceContextExtension
-    {
-        ITexture CreateTexture(TextureType type);
-    }
-
     public enum TextureType
     {
         Texture1D,

Dashboard.Common/Drawing/Image.cs

@@ -0,0 +1,72 @@
+using System;
+using System.IO;
+using System.Runtime.CompilerServices;
+using Dashboard.Pal;
+
+namespace Dashboard.Drawing
+{
+    public class Image(ImageData data) : IDisposable
+    {
+        protected readonly ConditionalWeakTable<DeviceContext, ITexture> Textures =
+            new ConditionalWeakTable<DeviceContext, ITexture>();
+
+        public virtual TextureType Type => data.Type;
+        public PixelFormat Format { get; } = data.Format;
+        public int Width { get; } = data.Width;
+        public int Height { get; } = data.Height;
+        public int Depth { get; } = data.Depth;
+        public int Levels { get; } = data.Levels;
+        public bool Premultiplied { get; } = data.Premultiplied;
+
+        public bool IsDisposed { get; private set; } = false;
+
+        ~Image()
+        {
+            InvokeDispose(false);
+        }
+
+        public virtual ITexture InternTexture(DeviceContext dc)
+        {
+            if (Textures.TryGetValue(dc, out ITexture? texture))
+                return texture;
+
+            IDirectRendering ext = dc.ExtensionRequire<IDirectRendering>();
+            texture = ext.CreateTexture(Type);
+            texture.SetStorage(Format, Width, Height, Depth, Levels);
+            for (int i = 0; i < Levels; i++)
+            {
+                texture.Write<byte>(Format, data.Bitmap.AsSpan()[(int)data.GetLevelOffset(i)..], level: i, align: data.Alignment);
+            }
+            texture.Premultiplied = Premultiplied;
+            texture.GenerateMipmaps();
+            Textures.Add(dc, texture);
+
+            return texture;
+        }
+
+        private void InvokeDispose(bool disposing)
+        {
+            if (IsDisposed)
+                return;
+            IsDisposed = true;
+
+            Dispose(disposing);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            foreach ((DeviceContext dc, ITexture texture) in Textures)
+            {
+                texture.Dispose();
+            }
+        }
+
+        public void Dispose() => InvokeDispose(true);
+
+        public static Image Load(Stream stream)
+        {
+            IImageLoader imageLoader = Application.Current.ExtensionRequire<IImageLoader>();
+            return new Image(imageLoader.LoadImageData(stream));
+        }
+    }
+}

Dashboard.Common/Drawing/KhronosShader.cs

@@ -0,0 +1,39 @@
+namespace Dashboard.Drawing
+{
+    public record GlslShaderCreateInfo() : IShaderCreateInfo
+    {
+        public required string VertexShader { get; init; }
+        public string? GeometryShader { get; init; } = null;
+        public string? TesselationControl { get; init; } = null;
+        public string? TesselationEvaluation { get; init; } = null;
+        public string? FragmentShader { get; init; } = null;
+    }
+
+    public record GlslComputeShaderCreateInfo(string Source) : IShaderCreateInfo
+    {
+    }
+
+    public record SpirvShaderCreateInfo(byte[] Binary) : IShaderCreateInfo
+    {
+        public int Format { get; init; } = Spirv;
+
+        public SpirvShaderCreateInfo(Stream stream) : this(GetBinary(stream)) { }
+
+        private static byte[] GetBinary(Stream stream)
+        {
+            //FIXME: this might actually be copying twice.
+            if (stream is MemoryStream ms)
+            {
+                return ms.ToArray();
+            }
+            else
+            {
+                using MemoryStream memory = new MemoryStream();
+                stream.CopyTo(memory);
+                return memory.ToArray();
+            }
+        }
+
+        private const int Spirv = 38225;
+    }
+}

Dashboard.Common/Drawing/ShaderBuilder.cs

@@ -0,0 +1,17 @@
+namespace Dashboard.Drawing
+{
+    public enum ShaderStage
+    {
+        Vertex,
+        Geometry,
+        TesselationEvaluation,
+        TesselationControl,
+        Fragment,
+        Compute,
+    }
+
+    public abstract class ShaderBuilder(string language)
+    {
+        public string Language { get; } = language;
+    }
+}

Dashboard.Common/Events/AnimationTickEventArgs.cs

@@ -1,20 +0,0 @@
-namespace Dashboard.Events
-{
-    public class AnimationTickEventArgs : UiEventArgs
-    {
-        /// <summary>
-        /// Animation delta time in seconds.
-        /// </summary>
-        public float Delta { get; }
-
-        public AnimationTickEventArgs(float delta) : base(UiEventType.AnimationTick)
-        {
-            Delta = delta;
-        }
-    }
-
-    public interface IAnimationTickEvent
-    {
-        event EventHandler<AnimationTickEventArgs> AnimationTimerEvent;
-    }
-}

Dashboard.Common/Events/KeyboardEvents.cs

@@ -0,0 +1,224 @@
+namespace Dashboard.Events
+{
+    [Flags]
+    public enum ModifierKeys
+    {
+        None = 0,
+        LeftBitPos  = 8,
+        RightBitPos = 16,
+
+        Shift   = (1 << 0),
+        Control = (1 << 1),
+        Alt     = (1 << 2),
+        Meta    = (1 << 3),
+
+        NumLock    = (1 << 4),
+        CapsLock   = (1 << 5),
+        ScrollLock = (1 << 6),
+
+        LeftShift    = (Shift   << LeftBitPos),
+        LeftControl  = (Control << LeftBitPos),
+        LeftAlt      = (Alt     << LeftBitPos),
+        LeftMeta     = (Meta    << LeftBitPos),
+
+        RightShift   = (Shift   << RightBitPos),
+        RightControl = (Control << RightBitPos),
+        RightAlt     = (Alt     << RightBitPos),
+        RightMeta    = (Meta    << RightBitPos),
+    }
+
+    public enum KeyCode
+    {
+        // TODO: Keycode table. Keycodes are subject to change upstream. SeeAlso: Extensions.cs@KeyCode ToDashboard(this Key key)
+    }
+
+    public enum ScanCode
+    {
+        // This scan code table is based on the Win32 scan code table.
+        // See https://learn.microsoft.com/en-us/windows/win32/inputdev/about-keyboard-input
+        Error = 0xFF,
+        SystemPowerDown = 0xE05E,
+        SystemSleep = 0xE05F,
+        SystemWakeUp = 0xE063,
+
+        A = 0x1E,
+        B = 0x30,
+        C = 0x2E,
+        D = 0x20,
+        E = 0x12,
+        F = 0x21,
+        G = 0x22,
+        H = 0x23,
+        I = 0x17,
+        J = 0x24,
+        K = 0x25,
+        L = 0x26,
+        M = 0x32,
+        N = 0x31,
+        O = 0x18,
+        P = 0x19,
+        Q = 0x10,
+        R = 0x13,
+        S = 0x1F,
+        T = 0x14,
+        U = 0x16,
+        V = 0x2F,
+        W = 0x11,
+        X = 0x2D,
+        Y = 0x15,
+        Z = 0x2C,
+
+        D1 = 0x02,
+        D2 = 0x03,
+        D3 = 0x04,
+        D4 = 0x05,
+        D5 = 0x06,
+        D6 = 0x07,
+        D7 = 0x08,
+        D8 = 0x09,
+        D9 = 0x0A,
+        D0 = 0x0B,
+
+        Return = 0x1C,
+        Esc = 0x01,
+        Delete = 0x0E,
+        Tab = 0x0F,
+        Space = 0x39,
+        Dash = 0x0C,
+        Equals = 0x0D,
+        LBracket = 0x1A,
+        RBracket = 0x1B,
+        Backslash = 0x2B,
+        Semicolon = 0x27,
+        Apostrophe = 0x28,
+        Grave = 0x29,
+        Comma = 0x33,
+        Period = 0x34,
+        ForwardSlash = 0x35,
+        CapsLock = 0x3A,
+        F1 = 0x3B,
+        F2 = 0x3C,
+        F3 = 0x3D,
+        F4 = 0x3E,
+        F5 = 0x3F,
+        F6 = 0x40,
+        F7 = 0x41,
+        F8 = 0x42,
+        F9 = 0x43,
+        F10 = 0x44,
+        F11 = 0x45,
+        F12 = 0x46,
+        PrintScr = 0xE037,
+        ScrollLock = 0x46,
+        Pause = 0xE046,
+        Insert = 0xE052,
+        Home = 0xE047,
+        PageUp = 0xE049,
+        Backspace = 0xE053,
+        End = 0xE04F,
+        PageDown = 0xE051,
+        RightArrow = 0xE04D,
+        LeftArrow = 0xE04B,
+        DownArrow = 0xE050,
+        UpArrow = 0xE048,
+        NumLock = 0xE045,
+        NumDiv = 0xE035,
+        NumMul = 0x37,
+        NumSub = 0x4A,
+        NumAdd = 0x4E,
+        NumEnter = 0xE01C,
+        Num1 = 0x4F,
+        Num2 = 0x50,
+        Num3 = 0x51,
+        Num4 = 0x4B,
+        Num5 = 0x4C,
+        Num6 = 0x4D,
+        Num7 = 0x47,
+        Num8 = 0x48,
+        Num9 = 0x49,
+        Num0 = 0x52,
+        NumDecimal = 0x53,
+        NumBackslash = 0x56,
+        NumEquals = 0x59,
+        Application = 0xE05D,
+        F13 = 0x64,
+        F14 = 0x65,
+        F15 = 0x66,
+        F16 = 0x67,
+        F17 = 0x68,
+        F18 = 0x69,
+        F19 = 0x6A,
+        F20 = 0x6B,
+        F21 = 0x6C,
+        F22 = 0x6D,
+        F23 = 0x6E,
+        F24 = 0x76,
+        NumComma = 0x7E,
+        International1 = 0x73,
+        International2 = 0x70,
+        International3 = 0x7D,
+        International4 = 0x79,
+        International5 = 0x7B,
+        International6 = 0x5C,
+        International7,
+        International8,
+        International9,
+        Lang1 = 0x72,
+        Lang2 = 0x71,
+        Lang3 = 0x78,
+        Lang4 = 0x77,
+        Lang5,
+        Lang6,
+        Lang7,
+        Lang8,
+        Lang9,
+        LCtrl = 0x1D,
+        LShift = 0x2A,
+        LWin = 0xE05B,
+        LAlt = 0x38,
+        RAlt = 0xE038,
+        RWin = 0xE05C,
+        RCtrl = 0xE01D,
+        RShift = 0x36,
+        NextTrack = 0xE019,
+        PrevTrack = 0xE010,
+        Stop = 0xE024,
+        PlayPause = 0xE022,
+        VolUp = 0xE030,
+        VolDown = 0xE029,
+        Configuration = 0xE06D,
+        Email = 0xE06C,
+        Calculator = 0xE021,
+        Browser = 0xE06B,
+        Search = 0xE065,
+        HomePage = 0xE032,
+        Back = 0xE06A,
+        Forward = 0xE69,
+        Halt = 0xE068,
+        Refresh = 0xE67,
+        Bookmarks = 0xE066,
+
+        NonUsSlashBar = 0xFF01,
+        Mute,
+    }
+
+    public class KeyboardButtonEventArgs(KeyCode keyCode, ScanCode scanCode, ModifierKeys modifierKeys, bool up)
+        : UiEventArgs(up ? UiEventType.KeyUp : UiEventType.KeyDown)
+    {
+        public KeyCode KeyCode { get; } = keyCode;
+        public ScanCode ScanCode { get; } = scanCode;
+        public ModifierKeys ModifierKeys { get; } = modifierKeys;
+    }
+
+    public class TextInputEventArgs(string text) : UiEventArgs(UiEventType.TextEdit)
+    {
+        public string Text { get; } = text;
+    }
+
+    public class TextEditEventArgs(string candidate, int cursor, int length) : UiEventArgs(UiEventType.TextEdit)
+    {
+        public string Candidate { get; } = candidate;
+        public int Cursor { get; } = cursor;
+        public int Length { get; } = length;
+    }
+}

Dashboard.Common/Events/MouseEvents.cs

@@ -20,50 +20,24 @@ namespace Dashboard.Events
         Middle = M3,
     }
 
-    public sealed class MouseMoveEventArgs : UiEventArgs
+    public sealed class MouseMoveEventArgs(Vector2 clientPosition, Vector2 delta) : UiEventArgs(UiEventType.MouseMove)
     {
-        public Vector2 ClientPosition { get; }
+        public Vector2 ClientPosition { get; } = clientPosition;
-        public Vector2 Delta { get; }
+        public Vector2 Delta { get; } = delta;
-
-        public MouseMoveEventArgs(Vector2 clientPosition, Vector2 delta)
-            : base(UiEventType.MouseMove)
-        {
-            ClientPosition = clientPosition;
-            Delta = delta;
-        }
     }
 
-    public sealed class MouseButtonEventArgs : UiEventArgs
+    public sealed class MouseButtonEventArgs(Vector2 clientPosition, MouseButtons buttons, ModifierKeys modifierKeys, bool up)
+        : UiEventArgs(up ? UiEventType.MouseButtonUp : UiEventType.MouseButtonDown)
     {
-        public Vector2 ClientPosition { get; }
+        public ModifierKeys ModifierKeys { get; } = modifierKeys;
-        public MouseButtons Buttons { get; }
+        public Vector2 ClientPosition { get; } = clientPosition;
-
+        public MouseButtons Buttons { get; } = buttons;
-        public MouseButtonEventArgs(Vector2 clientPosition, MouseButtons buttons, bool up)
-            : base(up ? UiEventType.MouseButtonUp : UiEventType.MouseButtonDown)
-        {
-            ClientPosition = clientPosition;
-            Buttons = buttons;
-        }
     }
 
-    public sealed class MouseScrollEventArgs : UiEventArgs
+    public sealed class MouseScrollEventArgs(Vector2 clientPosition, Vector2 scrollDelta)
+        : UiEventArgs(UiEventType.MouseScroll)
     {
-        public Vector2 ClientPosition { get; }
+        public Vector2 ClientPosition { get; } = clientPosition;
-        public Vector2 ScrollDelta { get; }
+        public Vector2 ScrollDelta { get; } = scrollDelta;
-
-        public MouseScrollEventArgs(Vector2 clientPosition, Vector2 scrollDelta)
-            : base(UiEventType.MouseScroll)
-        {
-            ClientPosition = clientPosition;
-            ScrollDelta = scrollDelta;
-        }
-    }
-
-    public interface IMouseEvents
-    {
-        event EventHandler<MouseMoveEventArgs> MouseMoved;
-        event EventHandler<MouseButtonEventArgs> MouseButtonDown;
-        event EventHandler<MouseButtonEventArgs> MouseButtonUp;
-        event EventHandler<MouseScrollEventArgs> MouseScroll;
     }
 }

Dashboard.Common/Events/TickEventArgs.cs

@@ -0,0 +1,15 @@
+namespace Dashboard.Events
+{
+    public class TickEventArgs : UiEventArgs
+    {
+        /// <summary>
+        /// Animation delta time in seconds.
+        /// </summary>
+        public float Delta { get; }
+
+        public TickEventArgs(float delta) : base(UiEventType.AnimationTick)
+        {
+            Delta = delta;
+        }
+    }
+}

Dashboard.Common/Events/UiEventArgs.cs

@@ -1,4 +1,5 @@
 using System.Numerics;
+using Dashboard.Pal;
 
 namespace Dashboard.Events
 {
@@ -6,6 +7,7 @@ namespace Dashboard.Events
     {
         None,
         AnimationTick,                  // Generic timer event.
+        Paint,                          // Generic paint event.
 
         // Text input related events.
         KeyDown,                        // Keyboard key down.
@@ -41,7 +43,7 @@ namespace Dashboard.Events
         ControlFocusGet,                // The control acquired focus.
         ControlFocusLost,               // The control lost focus.
         WindowClose,                    // The window closed.
-        
+
         UserRangeStart = 1 << 12,
     }
 
@@ -57,6 +59,11 @@ namespace Dashboard.Events
         public static readonly UiEventArgs None = new UiEventArgs(UiEventType.None);
     }
 
+    public class PaintEventArgs(DeviceContext dc) : UiEventArgs(UiEventType.Paint)
+    {
+        public DeviceContext DeviceContext { get; } = dc;
+    }
+
     public class ControlMovedEventArgs : UiEventArgs
     {
         public Vector2 OldPosition { get; }
@@ -69,8 +76,7 @@ namespace Dashboard.Events
         }
     }
 
-    public class ControlResizedEventArgs
+    public class ResizeEventArgs() : UiEventArgs(UiEventType.ControlResized)
     {
-        
     }
 }

Dashboard.Common/Events/WindowEvent.cs

@@ -0,0 +1,7 @@
+namespace Dashboard.Events
+{
+    public class WindowCloseEvent() : UiEventArgs(UiEventType.WindowClose)
+    {
+        public bool Cancel { get; set; } = false;
+    }
+}

Dashboard.Common/Extents.cs

@@ -0,0 +1,31 @@
+using System.Diagnostics;
+using System.Numerics;
+
+namespace Dashboard
+{
+    [DebuggerDisplay("{Value}")]
+    public readonly record struct Extents(Vector4 Value)
+    {
+        public float Left => Value.X;
+        public float Top => Value.Y;
+        public float Right => Value.Z;
+        public float Bottom => Value.W;
+
+        public float ExtentWidth => Left + Right;
+
+        public float ExtentHeight => Top + Bottom;
+
+        public Vector2 ExtentSize => new(ExtentWidth, ExtentHeight);
+
+        public Extents(float left, float top, float right, float bottom)
+            : this(new Vector4(left, top, right, bottom))
+        {   
+        }
+
+        public Extents(float value) : this(new Vector4(value))
+        {
+        }
+
+        public static readonly Extents None = new Extents(0);
+    }
+}

Dashboard.Common/FontProperties.cs

@@ -8,6 +8,7 @@ namespace Dashboard
         _400 = 400,
         _500 = 500,
         _600 = 600,
+        _700 = 700,
         _800 = 800,
         _900 = 900,
 

Dashboard.Common/ImageProperties.cs

@@ -1,4 +1,4 @@
-using System;
+using System.ComponentModel;
 using System.Diagnostics.CodeAnalysis;
 
 namespace Dashboard
@@ -7,7 +7,7 @@ namespace Dashboard
     /// Pixel format for images.
     /// </summary>
     [Flags]
-    public enum PixelFormat
+    public enum PixelFormat : byte
     {
         None = 0,
 
@@ -20,58 +20,67 @@ namespace Dashboard
         Rgb16F  = Rgb  | F16,
         Rgba16F = Rgba | F16,
 
-        // Channels
+        // Channels (hide these from editors)
+        [EditorBrowsable(EditorBrowsableState.Advanced)]
         R    = 0x01,
+        [EditorBrowsable(EditorBrowsableState.Advanced)]
         Rg   = 0x02,
+        [EditorBrowsable(EditorBrowsableState.Advanced)]
         Rgb  = 0x03,
+        [EditorBrowsable(EditorBrowsableState.Advanced)]
         Rgba = 0x04,
+        [EditorBrowsable(EditorBrowsableState.Advanced)]
         A    = 0x05,
+        [EditorBrowsable(EditorBrowsableState.Advanced)]
         ColorMask = 0x0F,
 
+        [EditorBrowsable(EditorBrowsableState.Advanced)]
         I8  = 0x10,
+        [EditorBrowsable(EditorBrowsableState.Advanced)]
         F16 = 0x20,
+        [EditorBrowsable(EditorBrowsableState.Advanced)]
         TypeMask = 0xF0,
     }
 
     /// <summary>
     /// Color channels for images.
     /// </summary>
-    public enum ColorChannel
+    public enum ColorChannel : byte
     {
+        /// <summary>
+        /// An invalid swizzle mask.
+        /// </summary>
+        Unknown = 0b00000,
+        
         /// <summary>
         /// The zero channel. Used for swizzle masks.
         /// </summary>
-        Zero = 0,
+        Zero = 0b10000,
 
         /// <summary>
         /// The one channel. Used for swizzle masks.
         /// </summary>
-        One = 1,
+        One = 0b11110,
-
-        /// <summary>
-        /// An invalid swizzle mask.
-        /// </summary>
-        Unknown = 2,
 
         /// <summary>
         /// The red channel.
         /// </summary>
-        Red = 4,
+        Red = 0b11000,
 
         /// <summary>
         /// The green channel.
         /// </summary>
-        Green = 5,
+        Green = 0b10100,
 
         /// <summary>
         /// The blue channel.
         /// </summary>
-        Blue = 6,
+        Blue = 0b10010,
 
         /// <summary>
         /// The alpha channel.
         /// </summary>
-        Alpha = 7,
+        Alpha = 0b10001,
     }
 
     /// <summary>

Dashboard.Common/Layout/ContainerLayoutInfo.cs

@@ -0,0 +1,117 @@
+using System.ComponentModel;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+
+namespace Dashboard.Layout
+{
+    public class ContainerLayoutInfo : INotifyPropertyChanged
+    {
+        public FlowDirection FlowDirection
+        {
+            get;
+            set => SetField(ref field, value);
+        } = FlowDirection.Row;
+
+        public Extents Padding
+        {
+            get;
+            set => SetField(ref field, value);
+        }
+
+        public event PropertyChangedEventHandler? PropertyChanged;
+
+        public virtual void ValidateLayout(ILayoutContainer container)
+        {
+            if (container.Count == 0)
+                return;
+
+            ItemSolution[] items = [.. container.Select(x => new ItemSolution(x))];
+           
+            // TODO: is this the actual size budget available at draw time?
+            Vector2 budget = container.Layout.ComputedBox.Size - Padding.ExtentSize;
+
+            IEnumerable<ItemSolution> growItems = items.Where(x => x.DisplayMode == DisplayMode.Grow);
+            
+            Vector2 denominator = growItems.Any() 
+                                    ? growItems.Select(x => x.Layout.Size + x.Layout.Margin.ExtentSize)
+                                               .Aggregate((a, b) => a + b)
+                                    : Vector2.One;
+
+            // TODO: The layout engine assumes row layout atm. Implement other layouts.
+
+            for (int i = 0; i < items.Length; i++)
+                items[i].Measure(budget, budget/denominator);
+
+            float fixedWidth = items
+                                .Where(x => x.DisplayMode != DisplayMode.Grow)
+                                .Sum(x => x.DesiredSize.X);
+            
+            float remaining = budget.X - fixedWidth;
+            float star = remaining / denominator.X;
+
+            Vector2 pen = container.Layout.ComputedBox.Min + new Vector2(Padding.Left, Padding.Top);
+            for (int i = 0; i < items.Length; i++)
+            {
+                items[i].Measure(budget, new Vector2(star, budget.Y));
+                items[i].Position = pen;
+                pen.X += items[i].DesiredSize.X;
+
+                items[i].Finish();
+            }
+        }
+
+        private struct ItemSolution(ILayoutItem item)
+        {
+            public ILayoutItem Item { get; } = item;
+            public Vector2 InstrinsicSize { get; } = item.CalculateIntrinsicSize();
+            public Vector2 DesiredSize { get; private set; }
+
+            public readonly LayoutInfo Layout => Item.Layout;
+            public readonly DisplayMode DisplayMode => Item.Layout.DisplayMode;
+
+            public Vector2 Position { get; set; }
+
+            public void Measure(Vector2 budget, Vector2 coefficient)
+            {
+                switch (DisplayMode)
+                {
+                    case DisplayMode.None:
+                        DesiredSize = Vector2.Zero;
+                        break;
+                    case DisplayMode.Fit:
+                        DesiredSize = InstrinsicSize;
+                        break;
+                    case DisplayMode.Fixed:
+                        DesiredSize = Layout.Size;
+                        break;
+                    case DisplayMode.Grow:
+                        DesiredSize = Layout.Size * coefficient;
+                        break;
+                    case DisplayMode.Relative:
+                        DesiredSize = Layout.Size * budget;
+                        break;
+                }
+
+                DesiredSize = Vector2.Clamp(DesiredSize, Layout.MinimumSize, Layout.MaximumSize);
+            }
+
+            public void Finish()
+            {
+                Layout.ComputedBox = new Box2d(Position, Position + DesiredSize);
+            }
+        }
+
+        protected virtual void OnPropertyChanged([CallerMemberName] string? propertyName = null)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+
+        protected bool SetField<T>(ref T field, T value, [CallerMemberName] string? propertyName = null)
+        {
+            if (EqualityComparer<T>.Default.Equals(field, value)) return false;
+            field = value;
+            OnPropertyChanged(propertyName);
+            return true;
+        }
+    }
+}

Dashboard.Common/Layout/ContainerMode.cs

@@ -0,0 +1,9 @@
+namespace Dashboard.Layout
+{
+    public enum ContainerMode
+    {
+        Basic,
+        Flex,
+        Grid,
+    }
+}

Dashboard.Common/Layout/DisplayMode.cs

@@ -0,0 +1,11 @@
+namespace Dashboard.Layout
+{
+    public enum DisplayMode
+    {
+        None,
+        Fit,
+        Grow,
+        Relative,
+        Fixed,
+    }
+}

Dashboard.Common/Layout/FlowDirection.cs

@@ -0,0 +1,10 @@
+namespace Dashboard.Layout
+{
+    public enum FlowDirection
+    {
+        Row,
+        Column,
+        RowReverse,
+        ColumnReverse,
+    }
+}

Dashboard.Common/Layout/ILayoutItem.cs

@@ -0,0 +1,18 @@
+using System.ComponentModel;
+using System.Numerics;
+
+namespace Dashboard.Layout
+{
+    public interface ILayoutItem : INotifyPropertyChanged
+    {
+        public LayoutInfo Layout { get; }
+
+        public Vector2 CalculateIntrinsicSize();
+        public Vector2 CalculateSize(Vector2 limits);
+    }
+
+    public interface ILayoutContainer : ILayoutItem, IReadOnlyList<ILayoutItem>
+    {
+        public ContainerLayoutInfo ContainerLayout { get; }
+    }
+}

Dashboard.Common/Layout/LayoutInfo.cs

@@ -0,0 +1,73 @@
+using System.Collections.Specialized;
+using System.ComponentModel;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+
+namespace Dashboard.Layout
+{
+    public class LayoutInfo : INotifyPropertyChanged
+    {
+        /// <summary>
+        /// Changes the control display.
+        /// </summary>
+        public DisplayMode DisplayMode
+        {
+            get;
+            set => SetField(ref field, value);
+        } = DisplayMode.Fit;
+
+        /// <summary>
+        /// Changes how overflows are handled.
+        /// </summary>
+        public OverflowMode OverflowMode
+        {
+            get;
+            set => SetField(ref field, value);
+        } = OverflowMode.Hidden;
+
+        public Vector2 Size
+        {
+            get;
+            set => SetField(ref field, value);
+        }
+
+        public Vector2 MaximumSize
+        {
+            get;
+            set => SetField(ref field, value);
+        }
+        
+        public Vector2 MinimumSize
+        {
+            get;
+            set => SetField(ref field, value);
+        }
+
+        public Extents Margin 
+        {
+            get;
+            set => SetField(ref field, value);
+        }
+
+        public Box2d ComputedBox
+        { 
+            get;
+            set => SetField(ref field, value);
+        }
+
+        public event PropertyChangedEventHandler? PropertyChanged;
+
+        protected virtual void OnPropertyChanged([CallerMemberName] string? propertyName = null)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+
+        protected bool SetField<T>(ref T field, T value, [CallerMemberName] string? propertyName = null)
+        {
+            if (EqualityComparer<T>.Default.Equals(field, value)) return false;
+            field = value;
+            OnPropertyChanged(propertyName);
+            return true;
+        }
+    }
+}

Dashboard.Common/Layout/OverflowMode.cs

@@ -0,0 +1,11 @@
+namespace Dashboard.Layout
+{
+    public enum OverflowMode
+    {
+        Hidden,
+        Overflow,
+        ScrollHorizontal,
+        ScrollVertical,
+        ScrollBoth,
+    }
+}

Dashboard.Common/LayoutExtensions.cs

@@ -0,0 +1,132 @@
+using System.ComponentModel;
+using System.Numerics;
+using Dashboard.Layout;
+
+namespace Dashboard
+{
+    [EditorBrowsable(EditorBrowsableState.Never)]
+    public static class LayoutExtensions
+    {
+        extension<T>(T item)
+            where T : ILayoutItem
+        {
+            public DisplayMode DisplayMode
+            {
+                get => item.Layout.DisplayMode;
+                set => item.Layout.DisplayMode = value;
+            }
+
+            public OverflowMode OverflowMode
+            {
+                get => item.Layout.OverflowMode;
+                set => item.Layout.OverflowMode = value;
+            }
+
+            public Vector2 Size
+            {
+                get => item.Layout.Size;
+                set => item.Layout.Size = value;
+            }
+
+            public float Width
+            {
+                get => item.Size.X;
+                set => item.Size = new Vector2(value, item.Size.Y);
+            }
+
+            public float Height
+            {
+                get => item.Size.Y;
+                set => item.Size = new Vector2(item.Size.X, value);
+            }
+
+            public Vector2 MaximumSize
+            {
+                get => item.Layout.MaximumSize;
+                set => item.Layout.MaximumSize = value;
+            }
+
+            public float MaximumWidth
+            {
+                get => item.MaximumSize.X;
+                set => item.MaximumSize = new Vector2(value, item.MaximumSize.Y);
+            }
+
+            public float MaximumHeight
+            {
+                get => item.MaximumSize.Y;
+                set => item.MaximumSize = new Vector2(item.MaximumSize.X, value);
+            }
+
+            public Vector2 MinimumSize
+            {
+                get => item.Layout.MinimumSize;
+                set => item.Layout.MinimumSize = value;
+            }
+
+            public float MinimumWidth
+            {
+                get => item.MinimumSize.X;
+                set => item.MinimumSize = new Vector2(value, item.MinimumSize.Y);
+            }
+
+            public float MinimumHeight
+            {
+                get => item.MinimumSize.Y;
+                set => item.MinimumSize = new Vector2(item.MinimumSize.X, value);
+            }
+
+            public Extents Margin
+            {
+                get => item.Layout.Margin;
+                set => item.Layout.Margin = value;
+            }
+
+            public float MarginLeft
+            {
+                get => item.Layout.Margin.Left;
+                set => item.Layout.Margin = new Extents(value, item.MarginTop, item.MarginRight, item.MarginBottom);
+            }
+
+            public float MarginTop
+            {
+                get => item.Layout.Margin.Top;
+                set => item.Layout.Margin = new Extents(item.MarginLeft, value, item.MarginRight, item.MarginBottom);
+            }
+
+            public float MarginRight
+            {
+                get => item.Layout.Margin.Right;
+                set => item.Layout.Margin = new Extents(item.MarginLeft, item.MarginTop, value, item.MarginBottom);
+            }
+
+            public float MarginBottom
+            {
+                get => item.Layout.Margin.Bottom;
+                set => item.Layout.Margin = new Extents(item.MarginLeft, item.MarginTop, item.MarginRight, value);
+            }
+
+            public Box2d ComputedBox
+            {
+                get => item.Layout.ComputedBox;
+                set => item.Layout.ComputedBox = value;
+            }
+        }
+
+        extension<T> (T item)
+            where T : ILayoutContainer
+        {
+            public FlowDirection FlowDirection
+            {
+                get => item.ContainerLayout.FlowDirection;
+                set => item.ContainerLayout.FlowDirection = value;
+            }
+
+            public Extents Padding
+            {
+                get => item.ContainerLayout.Padding;
+                set => item.ContainerLayout.Padding = value;
+            }
+        }
+    }
+}

Dashboard.Common/LayoutUnit.cs

@@ -0,0 +1,30 @@
+namespace Dashboard
+{
+    public enum LayoutUnit : short
+    {
+        /// <summary>
+        /// Does not specify a unit.
+        /// </summary>
+        Auto,
+        /// <summary>
+        /// The default unit. A size of a single picture element.
+        /// </summary>
+        Pixel = 1,
+        /// <summary>
+        /// 1/72th of an inch traditional in graphics design.
+        /// </summary>
+        Point = 2,
+        /// <summary>
+        /// The universal length unit for small distances.
+        /// </summary>
+        Millimeter = 3,
+        /// <summary>
+        /// An inverse proportional unit with respect to the container size.
+        /// </summary>
+        Star = 4,
+        /// <summary>
+        /// A directly proportional unit with respect to the container size.
+        /// </summary>
+        Percent = 5,
+    }
+}

Dashboard.Common/Measure.cs

@@ -1,48 +1,108 @@
+using System.Numerics;
+
 namespace Dashboard
 {
-    public enum MeasurementUnit
+    public record struct LayoutUnits(LayoutUnit All)
     {
-        /// <summary>
+        public LayoutUnit XUnit
-        /// The default unit. A size of a single picture element.
+        {
-        /// </summary>
+            get => (LayoutUnit)(((int)All & 0xF) >> 0);
-        Pixel,
+            set => All = (LayoutUnit)(((int)All & ~(0xF << 0)) | ((int)value << 0));
-        /// <summary>
+        }
-        /// 1/72th of an inch traditional in graphics design.
+
-        /// </summary>
+        public LayoutUnit YUnit
-        Point,
+        {
-        /// <summary>
+            get => (LayoutUnit)(((int)All & 0xF) >> 4);
-        /// The universal length unit for small distances.
+            set => All = (LayoutUnit)(((int)All & ~(0xF << 4)) | ((int)value << 4));
-        /// </summary>
+        }
-        Millimeter,
+
-        /// <summary>
+        public LayoutUnit ZUnit
-        /// An inverse proportional unit with respect to the container size.
+        {
-        /// </summary>
+            get => (LayoutUnit)(((int)All & 0xF) >> 8);
-        Star,
+            set => All = (LayoutUnit)(((int)All & ~(0xF << 8)) | ((int)value << 8));
-        /// <summary>
+        }
-        /// A directly proportional unit with respect to the container size.
+
-        /// </summary>
+        public LayoutUnit WUnit
-        Percent,
+        {
+            get => (LayoutUnit)(((int)All & 0xF) >> 12);
+            set => All = (LayoutUnit)(((int)All & ~(0xF << 12)) | ((int)value << 12));
+        }
     }
 
-    public record struct AdvancedMetric(MeasurementUnit Unit, float Value)
+    public record struct Metric(LayoutUnit Units, float Value)
     {
-        public AdvancedMetric Convert(MeasurementUnit target, float dpi, float rel, int stars)
+        public float Compute(float dpi, float rel, float star)
+        {
+            switch (Units)
+            {
+                case LayoutUnit.Auto:
+                    return -1;
+                case LayoutUnit.Millimeter:
+                    float mm2Px = dpi / 25.4f;
+                    return Value * mm2Px;
+                case LayoutUnit.Pixel:
+                    return Value;
+                case LayoutUnit.Point:
+                    float pt2Px = 72 / dpi;
+                    return Value * pt2Px;
+                case LayoutUnit.Percent:
+                    return rel * Value;
+                case LayoutUnit.Star:
+                    return star * Value;
+                default:
+                    throw new Exception("Unrecognized unit.");
+            }
+        }
+    }
+
+    public record struct Metric2D(LayoutUnits Units, Vector2 Value)
+    {
+        public float X
+        {
+            get => Value.X;
+            set => Value = new Vector2(value, Value.Y);
+        }
+
+        public LayoutUnit XUnits
+        {
+            get => Units.XUnit;
+            set => Units = Units with { XUnit = value };
+        }
+
+        public float Y
+        {
+            get => Value.Y;
+            set => Value = new Vector2(Value.X, value);
+        }
+
+        public LayoutUnit YUnits
+        {
+            get => Units.YUnit;
+            set => Units = Units with { YUnit = value };
+        }
+    }
+
+    public record struct BoxMetric(LayoutUnit Units, Box2d Value);
+
+    public record struct AdvancedMetric(LayoutUnit Unit, float Value)
+    {
+        public AdvancedMetric Convert(LayoutUnit target, float dpi, float rel, int stars)
         {
             if (Unit == target)
                 return this;
 
             float pixels = Unit switch {
-                MeasurementUnit.Pixel => Value,
+                LayoutUnit.Pixel => Value,
-                MeasurementUnit.Point => Value * (72f / dpi),
+                LayoutUnit.Point => Value * (72f / dpi),
-                MeasurementUnit.Millimeter => Value * (28.3464566929f / dpi),
+                LayoutUnit.Millimeter => Value * (28.3464566929f / dpi),
-                MeasurementUnit.Star => Value * rel / stars,
+                LayoutUnit.Star => Value * rel / stars,
-                MeasurementUnit.Percent => Value * rel / 100,
+                LayoutUnit.Percent => Value * rel / 100,
                 _ => throw new Exception(),
             };
 
             float value = target switch {
-                MeasurementUnit.Pixel => pixels,
+                LayoutUnit.Pixel => pixels,
-                MeasurementUnit.Point => Value * (dpi / 72f),
+                LayoutUnit.Point => Value * (dpi / 72f),
                 // MeasurementUnit.Millimeter =>
             };
 
@@ -65,22 +125,4 @@ namespace Dashboard
                 ? metric
                 : throw new Exception($"Could not parse the value '{str}'.");
     }
-
-    public static class MeasurementExtensions
-    {
-        public static bool IsRelative(this MeasurementUnit unit) => unit switch {
-            MeasurementUnit.Star or MeasurementUnit.Percent => true,
-            _ => false,
-        };
-        public static bool IsAbsolute(this MeasurementUnit unit) => !IsRelative(unit);
-
-        public static string ToShortString(this MeasurementUnit unit) => unit switch {
-            MeasurementUnit.Pixel => "px",
-            MeasurementUnit.Point => "pt",
-            MeasurementUnit.Millimeter => "mm",
-            MeasurementUnit.Star => "*",
-            MeasurementUnit.Percent => "%",
-            _ => throw new Exception("Unknown unit."),
-        };
-    }
 }

Dashboard.Common/MeasurementExtensions.cs

@@ -0,0 +1,30 @@
+namespace Dashboard
+{
+    public static class MeasurementExtensions
+    {
+        public static bool IsRelative(this LayoutUnit unit) => unit switch {
+            LayoutUnit.Star or LayoutUnit.Percent => true,
+            _ => false,
+        };
+        public static bool IsAbsolute(this LayoutUnit unit) => !IsRelative(unit);
+
+        public static string ToShortString(this LayoutUnit unit) => unit switch {
+            LayoutUnit.Pixel => "px",
+            LayoutUnit.Point => "pt",
+            LayoutUnit.Millimeter => "mm",
+            LayoutUnit.Star => "*",
+            LayoutUnit.Percent => "%",
+            _ => throw new Exception("Unknown unit."),
+        };
+
+        public static bool WithinTolerance(this float value, float reference, float absTol, float relTol)
+            => value.CompareTolerance(reference, absTol, relTol) == 0;
+
+        public static int CompareTolerance(this float value, float reference, float absTol, float relTol)
+        {
+            float tolerance = Math.Max(absTol, Math.Abs(reference) * relTol);
+            float difference = value - reference;
+            return difference < -tolerance ? -1 : difference > tolerance ? 1 : 0;
+        }
+    }
+}

Dashboard.Common/Pal/Application.cs

@@ -1,9 +1,10 @@
 using Dashboard.Collections;
 using Dashboard.Windowing;
+using BindingFlags = System.Reflection.BindingFlags;
 
 namespace Dashboard.Pal
 {
-    public abstract class AppContext : IContextBase<AppContext, IAppContextExtension>
+    public abstract class Application : IContextBase<Application, IApplicationExtension>
     {
         public abstract string DriverName { get; }
         public abstract string DriverVendor { get; }
@@ -15,12 +16,22 @@ namespace Dashboard.Pal
         public bool IsDisposed { get; private set; } = false;
         public IContextDebugger? Debugger { get; set; }
 
-        private readonly TypeDictionary<IAppContextExtension> _extensions =
+        protected CancellationToken? CancellationToken { get; private set; }
-            new TypeDictionary<IAppContextExtension>(true);
+        protected bool Quit { get; set; } = false;
-        private readonly TypeDictionary<IAppContextExtension, Func<IAppContextExtension>> _preloadedExtensions =
-            new TypeDictionary<IAppContextExtension, Func<IAppContextExtension>>(true);
 
-        ~AppContext()
+        private readonly TypeDictionary<IApplicationExtension> _extensions =
+            new TypeDictionary<IApplicationExtension>(true);
+        private readonly TypeDictionary<IApplicationExtension, Func<IApplicationExtension>> _preloadedExtensions =
+            new TypeDictionary<IApplicationExtension, Func<IApplicationExtension>>(true);
+
+        public event EventHandler<DeviceContext>? DeviceContextCreated;
+
+        public Application()
+        {
+            Current = this;
+        }
+
+        ~Application()
         {
             InvokeDispose(false);
         }
@@ -39,21 +50,29 @@ namespace Dashboard.Pal
         {
         }
 
+        protected internal virtual void OnDeviceContextCreated(DeviceContext dc)
+        {
+            DeviceContextCreated?.Invoke(this, dc);
+        }
+
         public virtual void RunEvents(bool wait)
         {
             if (!IsInitialized)
                 Initialize();
         }
 
-        public void Run() => Run(true, CancellationToken.None);
+        public void Run() => Run(true, System.Threading.CancellationToken.None);
 
-        public void Run(bool wait) => Run(wait, CancellationToken.None);
+        public void Run(bool wait) => Run(wait, System.Threading.CancellationToken.None);
 
         public void Run(bool waitForEvents, CancellationToken token)
         {
-            InitializeInternal();
+            CancellationToken = token;
+            CancellationToken.Value.Register(() => Quit = true);
 
-            while (!token.IsCancellationRequested)
+            Initialize();        
+
+            while (!Quit && !token.IsCancellationRequested)
             {
                 RunEvents(waitForEvents);
             }
@@ -82,19 +101,37 @@ namespace Dashboard.Pal
                 window.WindowManager = wm;
                 return window;
             }
+
+            public IWindow CreateDialogWindow(IWindow? parent = null)
+            {
+                if (parent is IVirtualWindow virtualWindow)
+                {
+                    IWindow? window = virtualWindow.WindowManager?.CreateWindow();
+
+                    if (window != null)
+                        return window;
+                }
+
+                return CreatePhysicalWindow();
+            }
         #endregion
 
-        public bool IsExtensionAvailable<T>() where T : IAppContextExtension
+        public bool IsExtensionAvailable<T>() where T : IApplicationExtension
         {
             return _extensions.Contains<T>() || _preloadedExtensions.Contains<T>();
         }
 
-        public bool ExtensionPreload<T>() where T : IAppContextExtension, new()
+        public bool ExtensionPreload<T>(Func<IApplicationExtension> loader) where T : IApplicationExtension
+        {
+            return _preloadedExtensions.Add<T>(loader);
+        }
+
+        public bool ExtensionPreload<T>() where T : IApplicationExtension, new()
         {
             return _preloadedExtensions.Add<T>(() => new T());
         }
 
-        public T ExtensionRequire<T>() where T : IAppContextExtension, new()
+        public T ExtensionRequire<T>() where T : IApplicationExtension
         {
             T? extension = default;
 
@@ -106,13 +143,13 @@ namespace Dashboard.Pal
                 if (_extensions.TryGet(out extension))
                     return extension;
 
-                if (_preloadedExtensions.Remove<T>(out Func<IAppContextExtension>? loader))
+                if (_preloadedExtensions.Remove<T>(out Func<IApplicationExtension>? loader))
                 {
                     extension = (T)loader!();
                 }
                 else
                 {
-                    extension = new T();
+                    extension = Activator.CreateInstance<T>();
                 }
 
                 _extensions.Add(extension);
@@ -122,11 +159,22 @@ namespace Dashboard.Pal
             return extension;
         }
 
+        public bool ExtensionLoad<T>(T instance) where T : IApplicationExtension
+        {
+            if (_extensions.Contains(instance))
+                return false;
+
+            _extensions.Add(instance);
+            instance.Require(this);
+            return true;
+        }
+
         protected virtual void Dispose(bool isDisposing)
         {
             if (!isDisposing) return;
 
-            foreach (IAppContextExtension extension in _extensions)
+            Quit = true;
+            foreach (IApplicationExtension extension in _extensions)
             {
                 extension.Dispose();
             }
@@ -143,5 +191,12 @@ namespace Dashboard.Pal
         }
 
         public void Dispose() => InvokeDispose(true);
+
+        [field: ThreadStatic]
+        public static Application Current
+        {
+            get => field ?? throw new InvalidOperationException("There is currently no current application.");
+            set;
+        }
     }
 }

Dashboard.Common/Pal/DeviceContext.cs

@@ -1,17 +1,27 @@
+using System.Numerics;
 using Dashboard.Collections;
+using Dashboard.Windowing;
 
 namespace Dashboard.Pal
 {
-    public abstract class DeviceContext : IContextBase<DeviceContext, IDeviceContextExtension>
+    public abstract class DeviceContext : IContextBase<DeviceContext, IDeviceContextExtension>, IDeviceContext
     {
         private readonly TypeDictionary<IDeviceContextExtension> _extensions =
             new TypeDictionary<IDeviceContextExtension>(true);
         private readonly TypeDictionary<IDeviceContextExtension, Func<IDeviceContextExtension>> _preloadedExtensions =
             new TypeDictionary<IDeviceContextExtension, Func<IDeviceContextExtension>>(true);
 
+        private readonly Dictionary<string, object> _attributes = new Dictionary<string, object>();
+
+
+        public Application Application { get; }
+        public IWindow? Window { get; }
         public abstract string DriverName { get; }
         public abstract string DriverVendor { get; }
         public abstract Version DriverVersion { get; }
+        public abstract ISwapGroup SwapGroup { get; }
+        public abstract Vector2 FramebufferSize { get; }
+        public virtual bool DoubleBuffered { get; } = false;
 
         public bool IsDisposed { get; private set; }
 
@@ -20,28 +30,52 @@ namespace Dashboard.Pal
         /// </summary>
         public IContextDebugger? Debugger { get; set; }
 
+        protected DeviceContext(Application app, IWindow? window)
+        {
+            Application = app;
+            Window = window;
+            app.OnDeviceContextCreated(this);
+        }
+
         ~DeviceContext()
         {
             Dispose(false);
         }
 
-        public virtual void Begin() { }
+        public virtual void Begin()
+        {
+            foreach (IDeviceContextExtension extension in _extensions)
+            {
+                extension.Begin();
+            }
+        }
 
         // public abstract void Paint(object renderbuffer);
 
-        public virtual void End() { }
+        public virtual void End()
+        {
+            foreach (IDeviceContextExtension extension in _extensions)
+            {
+                extension.End();
+            }
+        }
 
         public bool IsExtensionAvailable<T>() where T : IDeviceContextExtension
         {
             return _extensions.Contains<T>() || _preloadedExtensions.Contains<T>();
         }
 
+        public bool ExtensionPreload<T>(Func<IDeviceContextExtension> loader) where T : IDeviceContextExtension
+        {
+            return _preloadedExtensions.Add<T>(loader);
+        }
+
         public bool ExtensionPreload<T>() where T : IDeviceContextExtension, new()
         {
             return _preloadedExtensions.Add<T>(() => new T());
         }
 
-        public T ExtensionRequire<T>() where T : IDeviceContextExtension, new()
+        public T ExtensionRequire<T>() where T : IDeviceContextExtension
         {
             T? extension = default;
 
@@ -59,7 +93,7 @@ namespace Dashboard.Pal
                 }
                 else
                 {
-                    extension = new T();
+                    extension = Activator.CreateInstance<T>();
                 }
 
                 _extensions.Add(extension);
@@ -69,6 +103,38 @@ namespace Dashboard.Pal
             return extension;
         }
 
+        public bool ExtensionLoad<T>(T instance) where T : IDeviceContextExtension
+        {
+            if (_extensions.Contains(instance))
+                return false;
+
+            _extensions.Add(instance);
+            return true;
+        }
+
+        public void SetAttribute(string name, object? v)
+        {
+            if (v != null)
+                _attributes[name] = v;
+            else
+                _attributes.Remove(name);
+        }
+
+        public void SetAttribute<T>(string name, T v) => SetAttribute(name, (object?)v);
+
+        public object? GetAttribute(string name)
+        {
+            return _attributes.GetValueOrDefault(name);
+        }
+
+        public T? GetAttribute<T>(string name)
+        {
+            object? o = GetAttribute(name);
+            if (o != null)
+                return (T?)o;
+            return default;
+        }
+
         /// <summary>
         /// Implement your dispose in this function.
         /// </summary>

Dashboard.Common/Pal/IAppContextExtension.cs

@@ -1,7 +0,0 @@
-namespace Dashboard.Pal
-{
-    public interface IAppContextExtension : IContextExtensionBase<AppContext>
-    {
-
-    }
-}

Dashboard.Common/Pal/IApplicationExtension.cs

@@ -0,0 +1,7 @@
+namespace Dashboard.Pal
+{
+    public interface IApplicationExtension : IContextExtensionBase<Application>
+    {
+
+    }
+}

Dashboard.Common/Pal/IContextBase.cs

@@ -58,12 +58,31 @@ namespace Dashboard.Pal
         /// </returns>
         bool ExtensionPreload<T>() where T : TExtension, new();
 
+        /// <summary>
+        /// Preload extensions, to be lazy loaded when required.
+        /// </summary>
+        /// <param name="loader">The loader delegate.</param>
+        /// <typeparam name="T">The extension to preload.</typeparam>
+        /// <returns>
+        /// True if the extension was added to the preload set. Otherwise, already loaded or another extension
+        /// exists which provides this.
+        /// </returns>
+        bool ExtensionPreload<T>(Func<TExtension> loader) where T : TExtension;
+
         /// <summary>
         /// Require an extension.
         /// </summary>
         /// <typeparam name="T">The extension to require.</typeparam>
         /// <returns>The extension instance.</returns>
-        T ExtensionRequire<T>() where T : TExtension, new();
+        T ExtensionRequire<T>() where T : TExtension;
+
+        /// <summary>
+        /// Load an extension.
+        /// </summary>
+        /// <param name="instance">The extension instance.</param>
+        /// <typeparam name="T">The extension to require.</typeparam>
+        /// <returns>True if the extension was loaded, false if there was already one.</returns>
+        bool ExtensionLoad<T>(T instance) where T : TExtension;
     }
 
     /// <summary>

Dashboard.Common/Pal/IDeviceContextExtension.cs

@@ -2,5 +2,7 @@ namespace Dashboard.Pal
 {
     public interface IDeviceContextExtension : IContextExtensionBase<DeviceContext>
     {
+        void Begin() {}
+        void End() {}
     }
 }

Dashboard.Common/Windowing/ICompositor.cs

@@ -11,7 +11,7 @@ namespace Dashboard.Windowing
     /// <summary>
     /// Interface for classes that implement a window manager.
     /// </summary>
-    public interface IWindowManager : IEnumerable<IVirtualWindow>, IEventListener, IPaintable, IDisposable
+    public interface IWindowManager : IEnumerable<IVirtualWindow>, IEventListener
     {
         /// <summary>
         /// The physical window that this window manager is associated with.

Dashboard.Common/Windowing/IDeviceContext.cs

@@ -1,4 +1,5 @@
 using System.Drawing;
+using System.Numerics;
 
 namespace Dashboard.Windowing
 {
@@ -15,6 +16,6 @@ namespace Dashboard.Windowing
         /// <summary>
         /// The size of the window framebuffer in pixels.
         /// </summary>
-        Size FramebufferSize { get; }
+        Vector2 FramebufferSize { get; }
     }
-}
+}

Dashboard.Common/Windowing/IEventListener.cs

@@ -2,10 +2,13 @@ namespace Dashboard.Windowing
 {
     public interface IEventListener
     {
+        event EventHandler? EventRaised;
+
         /// <summary>
         /// Send an event to this windowing object.
         /// </summary>
+        /// <param name="sender">The object which generated the event.</param>
         /// <param name="args">The event arguments sent.</param>
-        void SendEvent(EventArgs args);
+        void SendEvent(object? sender, EventArgs args);
     }
 }

Dashboard.Common/Windowing/IForm.cs

@@ -0,0 +1,8 @@
+namespace Dashboard.Windowing
+{
+    public interface IForm : IEventListener, IDisposable
+    {
+        public IWindow Window { get; }
+        public string Title { get; }
+    }
+}

Dashboard.Common/Windowing/IWindow.cs

@@ -1,17 +1,18 @@
 using System.Drawing;
-using Dashboard.Events;
+using Dashboard.Pal;
 
 namespace Dashboard.Windowing
 {
     /// <summary>
     /// Base class of all Dashboard windows.
     /// </summary>
-    public interface IWindow :
+    public interface IWindow : IDisposable
-        IPaintable,
-        IDisposable,
-        IAnimationTickEvent,
-        IMouseEvents
     {
+        /// <summary>
+        /// The application for this window.
+        /// </summary>
+        Application Application { get; }
+
         /// <summary>
         /// Name of the window.
         /// </summary>
@@ -26,6 +27,23 @@ namespace Dashboard.Windowing
         /// The size of the window that excludes the window extents.
         /// </summary>
         SizeF ClientSize { get; set; }
+
+        IForm? Form { get; set; }
+
+        public event EventHandler? EventRaised;
+
+        /// <summary>
+        /// Subscribe to events from this window.
+        /// </summary>
+        /// <param name="listener">The event listener instance.</param>
+        /// <returns>An unsubscription token.</returns>
+        public void SubscribeEvent(IEventListener listener);
+
+        /// <summary>
+        /// Unsubscribe from events in from this window.
+        /// </summary>
+        /// <param name="listener">The event listener to unsubscribe.</param>
+        public void UnsubscribeEvent(IEventListener listener);
     }
 
     /// <summary>
@@ -49,6 +67,7 @@ namespace Dashboard.Windowing
     /// </summary>
     public interface IVirtualWindow : IWindow, IEventListener
     {
+        IWindowManager? WindowManager { get; set; }
     }
 
     /// <summary>
@@ -59,7 +78,7 @@ namespace Dashboard.Windowing
         /// <summary>
         /// The device context for this window.
         /// </summary>
-        IDeviceContext DeviceContext { get; }
+        DeviceContext DeviceContext { get; }
 
         /// <summary>
         /// True if the window is double buffered.

Dashboard.Drawing.OpenGL/CommandInfo.cs

@@ -1,48 +0,0 @@
-using System.Numerics;
-using System.Runtime.InteropServices;
-
-namespace Dashboard.Drawing.OpenGL
-{
-    public enum SimpleDrawCommand : int
-    {
-        Point = 1,
-        Line = 2,
-        Rect = 3,
-
-        /// <summary>
-        /// Make sure your custom commands have values higher than this if you plan on using the default command
-        /// buffer.
-        /// </summary>
-        CustomCommandStart = 4096
-    }
-
-    [StructLayout(LayoutKind.Explicit, Size = 64)]
-    public struct CommandInfo
-    {
-        [FieldOffset(0)]
-        public SimpleDrawCommand Type;
-
-        [FieldOffset(4)]
-        public int Flags;
-
-        [FieldOffset(8)]
-        public float Arg0;
-        [FieldOffset(12)]
-        public float Arg1;
-
-        [FieldOffset(16)]
-        public int FgGradientIndex;
-        [FieldOffset(20)]
-        public int FgGradientCount;
-        [FieldOffset(24)]
-        public int BgGradientIndex;
-        [FieldOffset(28)]
-        public int BgGradientCount;
-
-        [FieldOffset(32)]
-        public Vector4 FgColor;
-
-        [FieldOffset(48)]
-        public Vector4 BgColor;
-    }
-}

Dashboard.Drawing.OpenGL/ContextExecutor.cs

@@ -1,184 +0,0 @@
-using System.Drawing;
-using Dashboard.Drawing.OpenGL.Executors;
-using Dashboard.OpenGL;
-using OpenTK.Mathematics;
-
-namespace Dashboard.Drawing.OpenGL
-{
-    public interface ICommandExecutor
-    {
-        IEnumerable<string> Extensions { get; }
-        IContextExecutor Executor { get; }
-
-        void SetContextExecutor(IContextExecutor executor);
-
-        void BeginFrame();
-
-        void BeginDraw();
-
-        void EndDraw();
-
-        void EndFrame();
-
-        void ProcessCommand(ICommandFrame frame);
-    }
-
-    public interface IContextExecutor : IInitializer, IGLDisposable
-    {
-        GLEngine Engine { get; }
-        IGLContext Context { get; }
-        ContextResourcePool ResourcePool { get; }
-        TransformStack TransformStack { get; }
-    }
-
-    public class ContextExecutor : IContextExecutor
-    {
-        public GLEngine Engine { get; }
-        public IGLContext Context { get; }
-        public ContextResourcePool ResourcePool { get; }
-        public TransformStack TransformStack { get; } = new TransformStack();
-        protected bool IsDisposed { get; private set; } = false;
-        public bool IsInitialized { get; private set; } = false;
-
-        private readonly List<ICommandExecutor> _executorsList = new List<ICommandExecutor>();
-
-        private readonly Dictionary<string, ICommandExecutor> _executorsMap = new Dictionary<string, ICommandExecutor>();
-
-        public ContextExecutor(GLEngine engine, IGLContext context)
-        {
-            Engine = engine;
-            Context = context;
-
-            ResourcePool = Engine.ResourcePoolManager.Get(context);
-            ResourcePool.IncrementReference();
-
-            AddExecutor(new BaseCommandExecutor());
-            AddExecutor(new TextCommandExecutor());
-        }
-
-        ~ContextExecutor()
-        {
-            DisposeInvoker(true, false);
-        }
-
-        public void AddExecutor(ICommandExecutor executor, bool overwrite = false)
-        {
-            if (IsInitialized)
-                throw new Exception("This context executor is already initialized. Cannot add new command executors.");
-
-            IInitializer? initializer = executor as IInitializer;
-
-            if (initializer?.IsInitialized == true)
-                throw new InvalidOperationException("This command executor has already been initialized, cannot add here.");
-
-            if (!overwrite)
-            {
-                foreach (string extension in executor.Extensions)
-                {
-                    if (_executorsMap.ContainsKey(extension))
-                        throw new InvalidOperationException("An executor already handles this extension.");
-                }
-            }
-
-            foreach (string extension in executor.Extensions)
-            {
-                _executorsMap[extension] = executor;
-            }
-            _executorsList.Add(executor);
-
-            executor.SetContextExecutor(this);
-        }
-
-        public void Initialize()
-        {
-            if (IsInitialized)
-                return;
-            IsInitialized = true;
-
-            foreach (ICommandExecutor executor in _executorsList)
-            {
-                if (executor is IInitializer initializer)
-                    initializer.Initialize();
-            }
-        }
-
-        public virtual void BeginFrame()
-        {
-            foreach (ICommandExecutor executor in _executorsList)
-                executor.BeginFrame();
-        }
-
-        protected virtual void BeginDraw()
-        {
-            foreach (ICommandExecutor executor in _executorsList)
-                executor.BeginDraw();
-        }
-
-        protected virtual void EndDraw()
-        {
-            foreach (ICommandExecutor executor in _executorsList)
-                executor.EndDraw();
-        }
-
-        public virtual void EndFrame()
-        {
-            ResourcePool.Collector.Dispose();
-            TransformStack.Clear();
-
-            foreach (ICommandExecutor executor in _executorsList)
-                executor.EndFrame();
-        }
-
-        public void Draw(DrawQueue drawqueue) => Draw(drawqueue, new RectangleF(new PointF(0f,0f), Context.FramebufferSize));
-
-        public virtual void Draw(DrawQueue drawQueue, RectangleF bounds, float scale = 1.0f)
-        {
-            BeginDraw();
-
-            if (scale != 1.0f)
-                TransformStack.Push(Matrix4.CreateScale(scale, scale, 1));
-
-            foreach (ICommandFrame frame in drawQueue)
-            {
-                if (_executorsMap.TryGetValue(frame.Command.Extension.Name, out ICommandExecutor? executor))
-                    executor.ProcessCommand(frame);
-            }
-
-            EndDraw();
-        }
-
-        private void DisposeInvoker(bool safeExit, bool disposing)
-        {
-            if (!IsDisposed)
-                return;
-
-            IsDisposed = true;
-
-            if (disposing)
-                GC.SuppressFinalize(this);
-
-            Dispose(safeExit, disposing);
-        }
-
-        protected virtual void Dispose(bool safeExit, bool disposing)
-        {
-            if (disposing)
-            {
-                foreach (ICommandExecutor executor in _executorsList)
-                {
-                    if (executor is IGLDisposable glDisposable)
-                        glDisposable.Dispose(safeExit);
-                    else if (executor is IDisposable disposable)
-                        disposable.Dispose();
-                }
-
-                if (ResourcePool.DecrementReference())
-                    Dispose();
-            }
-        }
-
-        public void Dispose() => DisposeInvoker(true, true);
-
-        public void Dispose(bool safeExit) => DisposeInvoker(safeExit, true);
-    }
-}

Dashboard.Drawing.OpenGL/ContextResourcePool.cs

@@ -1,133 +0,0 @@
-using Dashboard.OpenGL;
-
-namespace Dashboard.Drawing.OpenGL
-{
-    public class ContextResourcePoolManager
-    {
-        private readonly Dictionary<IGLContext, ContextResourcePool> _unique = new Dictionary<IGLContext, ContextResourcePool>();
-        private readonly Dictionary<int, ContextResourcePool> _shared = new Dictionary<int, ContextResourcePool>();
-
-        public ContextResourcePool Get(IGLContext context)
-        {
-            if (context.ContextGroup == -1)
-            {
-                if (!_unique.TryGetValue(context, out ContextResourcePool? pool))
-                {
-                    pool = new ContextResourcePool(this, context);
-                    _unique.Add(context, pool);
-                }
-
-                return pool;
-            }
-            else
-            {
-                if (!_shared.TryGetValue(context.ContextGroup, out ContextResourcePool? pool))
-                {
-                    pool = new ContextResourcePool(this, context.ContextGroup);
-                    _shared.Add(context.ContextGroup, pool);
-                }
-
-                return pool;
-            }
-        }
-
-        internal void Disposed(ContextResourcePool pool)
-        {
-            // TODO:
-        }
-    }
-
-    public class ContextResourcePool : IGLDisposable, IArc
-    {
-        private int _references = 0;
-        private bool _isDisposed = false;
-        private readonly Dictionary<int, IResourceManager> _managers = new Dictionary<int, IResourceManager>();
-
-        public ContextResourcePoolManager Manager { get; }
-        public IGLContext? Context { get; private set; } = null;
-        public int ContextGroup { get; private set; } = -1;
-        public int References => _references;
-        public ContextCollector Collector { get; } = new ContextCollector();
-
-        internal ContextResourcePool(ContextResourcePoolManager manager, int contextGroup)
-        {
-            Manager = manager;
-            ContextGroup = contextGroup;
-        }
-
-        internal ContextResourcePool(ContextResourcePoolManager manager, IGLContext context)
-        {
-            Manager = manager;
-            Context = context;
-        }
-
-        public T GetResourceManager<T>(bool init = true) where T : IResourceManager, new()
-        {
-            int index = ManagerAtom<T>.Atom;
-
-            if (!_managers.TryGetValue(index, out IResourceManager? resourceClass))
-            {
-                _managers[index] = resourceClass = new T();
-            }
-
-            if (init && resourceClass is IInitializer initializer)
-            {
-                initializer.Initialize();
-            }
-
-            return (T)resourceClass;
-        }
-
-        ~ContextResourcePool()
-        {
-            Dispose(true, false);
-        }
-
-        public void Dispose() => Dispose(true, false);
-
-        public void Dispose(bool safeExit) => Dispose(safeExit, true);
-
-        private void Dispose(bool safeExit, bool disposing)
-        {
-            if (_isDisposed)
-                return;
-            _isDisposed = true;
-
-            Manager.Disposed(this);
-
-            if (disposing)
-            {
-                foreach ((int _, IResourceManager manager) in _managers)
-                {
-                    if (manager is IGLDisposable glDisposable)
-                        glDisposable.Dispose(safeExit);
-                    else if (manager is IDisposable disposable)
-                        disposable.Dispose();
-                }
-                GC.SuppressFinalize(this);
-            }
-        }
-
-        public void IncrementReference()
-        {
-            Interlocked.Increment(ref _references);
-        }
-
-        public bool DecrementReference()
-        {
-            return Interlocked.Decrement(ref _references) == 0;
-        }
-
-
-        private class ManagerAtom
-        {
-            private static int _counter = -1;
-
-            protected static int Acquire() => Interlocked.Increment(ref _counter);
-        }
-        private class ManagerAtom<T> : ManagerAtom where T : IResourceManager
-        {
-            public static int Atom { get; } = Acquire();
-        }
-    }
-}

Dashboard.Drawing.OpenGL/Dashboard.Drawing.OpenGL.csproj

@@ -1,27 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-    <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
-        <ImplicitUsings>enable</ImplicitUsings>
-        <Nullable>enable</Nullable>
-        <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    </PropertyGroup>
-
-    <ItemGroup>
-      <PackageReference Include="BlurgText" Version="0.1.0-nightly-19" />
-      <PackageReference Include="OpenTK.Graphics" Version="[5.0.0-pre.*,5.1)" />
-    </ItemGroup>
-
-    <ItemGroup>
-      <ProjectReference Include="..\Dashboard.Drawing\Dashboard.Drawing.csproj" />
-      <ProjectReference Include="..\Dashboard.OpenGL\Dashboard.OpenGL.csproj" />
-    </ItemGroup>
-
-    <ItemGroup>
-      <EmbeddedResource Include="Executors\simple.frag" />
-      <EmbeddedResource Include="Executors\simple.vert" />
-      <EmbeddedResource Include="Executors\text.vert" />
-      <EmbeddedResource Include="Executors\text.frag" />
-    </ItemGroup>
-
-</Project>

Dashboard.Drawing.OpenGL/DrawCallRecorder.cs

@@ -1,468 +0,0 @@
-using System.Diagnostics.Contracts;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-using Dashboard.OpenGL;
-using OpenTK.Graphics.OpenGL;
-using OpenTK.Mathematics;
-using Vector2 = System.Numerics.Vector2;
-using Vector3 = System.Numerics.Vector3;
-
-namespace Dashboard.Drawing.OpenGL
-{
-    public class DrawCallRecorder : IGLDisposable, IInitializer
-    {
-        private int _vao = 0;
-        private int _vbo = 0;
-        private readonly List<DrawVertex> _vertices = new List<DrawVertex>();
-        private readonly List<DrawCall> _calls = new List<DrawCall>();
-
-        private int _start = 0;
-        private int _count = 0;
-        private int _primitives = 0;
-        private Vector3 _charCoords;
-        private int _cmdIndex;
-        private int _texture0, _texture1, _texture2, _texture3;
-        private TextureTarget _target0, _target1, _target2, _target3;
-        private Matrix4 _transforms = Matrix4.Identity;
-
-        public int CommandModulus = 64;
-        public int CommandBuffer = 0;
-        public int CommandSize = 64;
-
-        private int CommandByteSize => CommandModulus * CommandSize;
-
-        public int TransformsLocation { get; set; }
-
-        public void Transforms(in Matrix4 transforms)
-        {
-            _transforms = transforms;
-        }
-
-        public void Begin(PrimitiveType type)
-        {
-            if (_primitives != 0)
-                throw new InvalidOperationException("Attempt to begin new draw call before finishing previous one.");
-
-            _primitives = (int)type;
-            _start = _vertices.Count;
-            _count = 0;
-        }
-
-        public void TexCoords2(Vector2 texCoords)
-        {
-            _charCoords = new Vector3(texCoords, 0);
-        }
-
-        public void CharCoords(Vector3 charCoords)
-        {
-            _charCoords = charCoords;
-        }
-
-        public void CommandIndex(int index)
-        {
-            _cmdIndex = index;
-        }
-
-        public void Vertex3(Vector3 vertex)
-        {
-            _vertices.Add(new DrawVertex()
-            {
-                Position = vertex,
-                CharCoords = _charCoords,
-                CmdIndex = _cmdIndex % CommandModulus,
-            });
-            _count++;
-        }
-
-        public void End()
-        {
-            if (_primitives == 0)
-                throw new InvalidOperationException("Attempt to end draw call before starting one.");
-
-            _calls.Add(
-                new DrawCall()
-                {
-                    Type = (PrimitiveType)_primitives,
-                    Start = _start,
-                    Count = _count,
-                    CmdIndex = _cmdIndex,
-                    Target0 = _target0,
-                    Target1 = _target1,
-                    Target2 = _target2,
-                    Target3 = _target3,
-                    Texture0 = _texture0,
-                    Texture1 = _texture1,
-                    Texture2 = _texture2,
-                    Texture3 = _texture3,
-                    Transforms = _transforms,
-                });
-
-            _primitives = 0;
-        }
-
-        public void BindTexture(TextureTarget target, int texture) => BindTexture(target, 0, texture);
-
-        public void BindTexture(TextureTarget target, int unit, int texture)
-        {
-            switch (unit)
-            {
-                case 0:
-                    _texture0 = 0;
-                    _target0 = target;
-                    break;
-                case 1:
-                    _texture1 = 0;
-                    _target1 = target;
-                    break;
-                case 2:
-                    _texture2 = 0;
-                    _target2 = target;
-                    break;
-                case 3:
-                    _texture3 = 0;
-                    _target3 = target;
-                    break;
-                default:
-                    throw new ArgumentOutOfRangeException(nameof(unit), "I did not write support for more than 4 textures.");
-            }
-        }
-
-        public void DrawArrays(PrimitiveType type, int first, int count)
-        {
-            throw new NotImplementedException();
-        }
-
-        public void Execute()
-        {
-            GL.BindVertexArray(_vao);
-            GL.BindBuffer(BufferTarget.ArrayBuffer, _vbo);
-
-            ReadOnlySpan<DrawVertex> vertices = CollectionsMarshal.AsSpan(_vertices);
-            GL.BufferData(BufferTarget.ArrayBuffer, _vertices.Count * Unsafe.SizeOf<DrawVertex>(), vertices, BufferUsage.DynamicDraw);
-
-            foreach (DrawCall call in _calls)
-            {
-                GL.BindBufferRange(BufferTarget.UniformBuffer, 0, CommandBuffer, call.CmdIndex / CommandModulus * CommandByteSize, CommandByteSize);
-                GL.ActiveTexture(TextureUnit.Texture0);
-                GL.BindTexture(call.Target0, call.Texture0);
-                GL.ActiveTexture(TextureUnit.Texture1);
-                GL.BindTexture(call.Target1, call.Texture1);
-                GL.ActiveTexture(TextureUnit.Texture2);
-                GL.BindTexture(call.Target2, call.Texture2);
-                GL.ActiveTexture(TextureUnit.Texture3);
-                GL.BindTexture(call.Target3, call.Texture3);
-
-                Matrix4 transforms = call.Transforms;
-                GL.UniformMatrix4f(TransformsLocation, 1, true, ref transforms);
-                GL.DrawArrays(call.Type, call.Start, call.Count);
-            }
-        }
-
-        public void Clear()
-        {
-            _vertices.Clear();
-            _calls.Clear();
-        }
-
-        public void Dispose()
-        {
-            throw new NotImplementedException();
-        }
-
-        public void Dispose(bool safeExit)
-        {
-            throw new NotImplementedException();
-        }
-
-        public bool IsInitialized { get; private set; }
-        public void Initialize()
-        {
-            if (IsInitialized)
-                return;
-            IsInitialized = true;
-
-            _vao = GL.CreateVertexArray();
-            _vbo = GL.CreateBuffer();
-
-            GL.BindVertexArray(_vao);
-            GL.BindBuffer(BufferTarget.ArrayBuffer, _vbo);
-
-            GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, 32, 0);
-            GL.VertexAttribPointer(1, 3, VertexAttribPointerType.Float, false, 32, 16);
-            GL.VertexAttribIPointer(2, 1, VertexAttribIType.Int, 32, 28);
-            GL.EnableVertexAttribArray(0);
-            GL.EnableVertexAttribArray(1);
-            GL.EnableVertexAttribArray(2);
-        }
-
-        private struct DrawCall
-        {
-            public PrimitiveType Type;
-            public int Start;
-            public int Count;
-            public int CmdIndex;
-
-            public int Texture0;
-            public int Texture1;
-            public int Texture2;
-            public int Texture3;
-
-            public TextureTarget Target0;
-            public TextureTarget Target1;
-            public TextureTarget Target2;
-            public TextureTarget Target3;
-
-            public Matrix4 Transforms;
-        }
-
-        [StructLayout(LayoutKind.Explicit, Size = 32)]
-        private struct DrawVertex
-        {
-            [FieldOffset(0)]
-            public Vector3 Position;
-            [FieldOffset(16)]
-            public Vector3 CharCoords;
-            [FieldOffset(28)]
-            public int CmdIndex;
-        }
-    }
-
-    /// <summary>
-    /// A customizable immediate mode draw call queue, for the modern OpenGL user.
-    /// </summary>
-    /// <typeparam name="TCall">The call info type.</typeparam>
-    /// <typeparam name="TVertex">The vertex structure.</typeparam>
-    public abstract class DrawCallRecorder<TCall, TVertex> : IGLDisposable, IInitializer
-        where TVertex : unmanaged
-    {
-        /// <summary>
-        /// The vertex array for this queue.
-        /// </summary>
-        public int Vao { get; private set; }
-
-        /// <summary>
-        /// The vertex buffer for this queue.
-        /// </summary>
-        public int Vbo { get; private set; }
-
-        /// <summary>
-        /// Number of calls recorded in this queue.
-        /// </summary>
-        public int CallCount => Calls.Count;
-
-        /// <summary>
-        /// The number of total vertices recorded.
-        /// </summary>
-        public int TotalVertices => Vertices.Count;
-
-        /// <summary>
-        /// The latest draw call info.
-        /// </summary>
-        public ref TCall CurrentCall => ref _currentCall;
-
-        /// <summary>
-        /// The latest vertex emitted.
-        /// </summary>
-        public ref TVertex CurrentVertex => ref _currentVertex;
-
-        /// <summary>
-        /// True if currently recording a draw call.
-        /// </summary>
-        public bool InCall => _primitiveMode != 0;
-
-        /// <summary>
-        /// Size of one vertex.
-        /// </summary>
-        protected int VertexSize => Unsafe.SizeOf<TVertex>();
-
-        /// <summary>
-        /// The list of draw calls.
-        /// </summary>
-        protected List<DrawCall> Calls { get; } = new List<DrawCall>();
-
-        /// <summary>
-        /// The list of all vertices.
-        /// </summary>
-        protected List<TVertex> Vertices { get; } = new List<TVertex>();
-
-        /// <summary>
-        /// The value to write for the draw call info at the start of a call.
-        /// </summary>
-        [Pure] protected virtual TCall DefaultCall => default(TCall);
-
-        /// <summary>
-        /// The value to write for last vertex at the start of a call.
-        /// </summary>
-        [Pure] protected virtual TVertex DefaultVertex => default;
-
-        private int _start = 0;
-        private int _count = 0;
-        private int _primitiveMode = 0;
-        private TCall _currentCall;
-        private TVertex _currentVertex;
-
-        protected DrawCallRecorder()
-        {
-            _currentCall = DefaultCall;
-            _currentVertex = DefaultVertex;
-        }
-
-        /// <summary>
-        /// Record a draw call directly.
-        /// </summary>
-        /// <param name="type">The primitive type to use.</param>
-        /// <param name="callInfo">The call info structure to use</param>
-        /// <param name="vertices">The list of vertices to use.</param>
-        /// <exception cref="InvalidOperationException">You attempted to use this function during another draw call.</exception>
-        public void DrawArrays(PrimitiveType type, in TCall callInfo, ReadOnlySpan<TVertex> vertices)
-        {
-            if (InCall)
-                throw new InvalidOperationException("Cannot use draw arrays in the middle of an ongoing immediate-mode call.");
-
-            DrawCall call = new DrawCall()
-            {
-                Type = type,
-                Start = Vertices.Count,
-                Count = vertices.Length,
-                CallInfo = callInfo,
-            };
-
-            Vertices.AddRange(vertices);
-            Calls.Add(call);
-        }
-
-        /// <summary>
-        /// Start a draw call.
-        /// </summary>
-        /// <param name="type">The primitive type for the call.</param>
-        public void Begin(PrimitiveType type) => Begin(type, DefaultCall);
-
-        /// <summary>
-        /// Start a draw call.
-        /// </summary>
-        /// <param name="type">The primitive type for the call.</param>
-        /// <param name="callInfo">The call info.</param>
-        /// <exception cref="InvalidOperationException">You attempted to create a draw call within a draw call.</exception>
-        public void Begin(PrimitiveType type, TCall callInfo)
-        {
-            if (InCall)
-                throw new InvalidOperationException("Attempt to begin new draw call before finishing previous one.");
-
-            _primitiveMode = (int)type;
-            _start = Vertices.Count;
-            _count = 0;
-            CurrentCall = callInfo;
-            CurrentVertex = DefaultVertex;
-        }
-
-        /// <summary>
-        /// Emit the latest or modified vertex.
-        /// </summary>
-        public void Vertex()
-        {
-            Vertex(CurrentVertex);
-        }
-
-        /// <summary>
-        /// Emit a vertex.
-        /// </summary>
-        /// <param name="vertex">The vertex to emit.</param>
-        public void Vertex(in TVertex vertex)
-        {
-            Vertices.Add(CurrentVertex = vertex);
-            _count++;
-        }
-
-        /// <summary>
-        /// End the current call.
-        /// </summary>
-        /// <exception cref="InvalidOperationException">You tried to end a call that you didn't begin recording.</exception>
-        public void End()
-        {
-            if (!InCall)
-                throw new InvalidOperationException("Attempt to end draw call before starting one.");
-
-            Calls.Add(new DrawCall()
-            {
-                Start = _start,
-                Count = _count,
-                Type = (PrimitiveType)_primitiveMode,
-                CallInfo = CurrentCall,
-            });
-
-            _primitiveMode = 0;
-        }
-
-        /// <summary>
-        /// Called by the execution engine before a draw call is executed.
-        /// </summary>
-        /// <param name="call">The call to prepare.</param>
-        protected abstract void PrepareCall(in TCall call);
-
-        /// <summary>
-        /// Set the vertex format for the <see cref="Vao"/> and <see cref="Vbo"/> created by the recorder.
-        /// </summary>
-        protected abstract void SetVertexFormat();
-
-        /// <summary>
-        /// Execute all the recorded draw calls.
-        /// </summary>
-        public void Execute()
-        {
-            GL.BindVertexArray(Vao);
-            GL.BindBuffer(BufferTarget.ArrayBuffer, Vbo);
-
-            ReadOnlySpan<TVertex> vertices = CollectionsMarshal.AsSpan(Vertices);
-            GL.BufferData(BufferTarget.ArrayBuffer, Vertices.Count * VertexSize, vertices, BufferUsage.DynamicDraw);
-
-            foreach (DrawCall call in Calls)
-            {
-                PrepareCall(call.CallInfo);
-                GL.DrawArrays(call.Type, call.Start, call.Count);
-            }
-        }
-
-        /// <summary>
-        /// Clear the draw call queue.
-        /// </summary>
-        public void Clear()
-        {
-            Vertices.Clear();
-            Calls.Clear();
-        }
-
-        public void Dispose()
-        {
-            throw new NotImplementedException();
-        }
-
-        public void Dispose(bool safeExit)
-        {
-            throw new NotImplementedException();
-        }
-
-        public bool IsInitialized { get; private set; }
-        public void Initialize()
-        {
-            if (IsInitialized)
-                return;
-            IsInitialized = true;
-
-            Vao = GL.CreateVertexArray();
-            Vbo = GL.CreateBuffer();
-
-            GL.BindVertexArray(Vao);
-            GL.BindBuffer(BufferTarget.ArrayBuffer, Vbo);
-
-            SetVertexFormat();
-        }
-
-        protected struct DrawCall
-        {
-            public PrimitiveType Type;
-            public int Start;
-            public int Count;
-            public TCall CallInfo;
-        }
-    }
-}

Dashboard.Drawing.OpenGL/Executors/BaseCommandExecutor.cs

@@ -1,332 +0,0 @@
-using System.Drawing;
-using OpenTK.Graphics.OpenGL;
-using System.Numerics;
-using OTK = OpenTK.Mathematics;
-
-namespace Dashboard.Drawing.OpenGL.Executors
-{
-    public class BaseCommandExecutor : IInitializer, ICommandExecutor
-    {
-        private int _program = 0;
-        private readonly MappableBumpAllocator<CommandInfo> _commands = new MappableBumpAllocator<CommandInfo>();
-        private readonly DrawCallRecorder _calls = new DrawCallRecorder();
-
-        public bool IsInitialized { get; private set; }
-        public IEnumerable<string> Extensions { get; } = new[] { "DB_base" };
-        public IContextExecutor Executor { get; private set; } = null!;
-
-        public void Initialize()
-        {
-            if (IsInitialized) return;
-
-            if (Executor == null)
-                throw new Exception("Executor has not been set.");
-
-            IsInitialized = true;
-
-            LoadShaders();
-        }
-
-        public void SetContextExecutor(IContextExecutor executor)
-        {
-            Executor = executor;
-        }
-
-        public void BeginFrame()
-        {
-        }
-
-        public void BeginDraw()
-        {
-            _commands.Initialize();
-            _calls.Initialize();
-
-            Size size = Executor.Context.FramebufferSize;
-
-            Executor.TransformStack.Push(OTK.Matrix4.CreateOrthographicOffCenter(
-                0,
-                size.Width,
-                size.Height,
-                0,
-                1,
-                -1));
-
-            GL.Viewport(0, 0, size.Width, size.Height);
-        }
-
-        public void EndDraw()
-        {
-            _commands.Unmap();
-            GL.UseProgram(_program);
-            _calls.CommandBuffer = _commands.Handle;
-            _calls.Execute();
-        }
-
-        public void EndFrame()
-        {
-            _commands.Clear();
-            _calls.Clear();
-        }
-
-        public void ProcessCommand(ICommandFrame frame)
-        {
-            switch (frame.Command.Name)
-            {
-                case "Point":
-                    DrawBasePoint(frame);
-                    break;
-                case "Line":
-                    DrawBaseLine(frame);
-                    break;
-                case "RectF":
-                case "RectS":
-                case "RectFS":
-                    DrawRect(frame);
-                    break;
-            }
-        }
-
-        private void DrawBasePoint(ICommandFrame frame)
-        {
-            ref CommandInfo info = ref _commands.Take(out int index);
-
-            PointCommandArgs args = frame.GetParameter<PointCommandArgs>();
-
-            info = new CommandInfo()
-            {
-                Type = SimpleDrawCommand.Point,
-                Arg0 = args.Size,
-            };
-
-            SetCommandCommonBrush(ref info, args.Brush, args.Brush);
-
-            _calls.Transforms(Executor.TransformStack.Top);
-            _calls.Begin(PrimitiveType.Triangles);
-            _calls.CommandIndex(index);
-            DrawPoint(args.Position, args.Depth, args.Size);
-            _calls.End();
-        }
-
-        private void DrawPoint(Vector2 position, float depth, float diameter)
-        {
-            // Draw a point as a isocles triangle.
-            const float adjust = 1.1f;
-            const float cos30 = 0.8660254038f;
-            Vector2 top   = adjust * new Vector2(0, -cos30);
-            Vector2 left  = adjust * new Vector2(-cos30, 0.5f);
-            Vector2 right = adjust * new Vector2(cos30, 0.5f);
-
-            _calls.TexCoords2(top);
-            _calls.Vertex3(new Vector3(position + top * diameter, depth));
-            _calls.TexCoords2(left);
-            _calls.Vertex3(new Vector3(position + left * diameter, depth));
-            _calls.TexCoords2(right);
-            _calls.Vertex3(new Vector3(position + right * diameter, depth));
-        }
-
-        private void DrawBaseLine(ICommandFrame frame)
-        {
-            ref CommandInfo info = ref _commands.Take(out int index);
-
-            LineCommandArgs args = frame.GetParameter<LineCommandArgs>();
-
-            info = new CommandInfo()
-            {
-                Type = SimpleDrawCommand.Line,
-                Arg0 = 0.5f * args.Size / (args.End - args.Start).Length(),
-            };
-
-            SetCommandCommonBrush(ref info, args.Brush, args.Brush);
-
-            _calls.Transforms(Executor.TransformStack.Top);
-            _calls.Begin(PrimitiveType.Triangles);
-
-            _calls.CommandIndex(index);
-
-            DrawLine(args.Start, args.End, args.Depth, args.Size);
-
-            _calls.End();
-        }
-
-        private void DrawLine(Vector2 start, Vector2 end, float depth, float width)
-        {
-            float radius = 0.5f * width;
-            Vector2 segment = end - start;
-            float length = segment.Length();
-            float ratio = radius / length;
-            Vector2 n = ratio * segment;
-            Vector2 t = new Vector2(-n.Y, n.X);
-
-            Vector2 t00 = new Vector2(-ratio, -ratio);
-            Vector2 t10 = new Vector2(1+ratio, -ratio);
-            Vector2 t01 = new Vector2(-ratio, +ratio);
-            Vector2 t11 = new Vector2(1+ratio, +ratio);
-
-            Vector3 x00 = new Vector3(start - n - t, depth);
-            Vector3 x10 = new Vector3(end + n - t, depth);
-            Vector3 x01 = new Vector3(start - n + t, depth);
-            Vector3 x11 = new Vector3(end + n + t, depth);
-
-            _calls.TexCoords2(t00);
-            _calls.Vertex3(x00);
-            _calls.TexCoords2(t01);
-            _calls.Vertex3(x01);
-            _calls.TexCoords2(t11);
-            _calls.Vertex3(x11);
-
-            _calls.TexCoords2(t00);
-            _calls.Vertex3(x00);
-            _calls.TexCoords2(t11);
-            _calls.Vertex3(x11);
-            _calls.TexCoords2(t10);
-            _calls.Vertex3(x10);
-        }
-
-        private void DrawRect(ICommandFrame frame)
-        {
-            ref CommandInfo info = ref _commands.Take(out int index);
-
-            RectCommandArgs args = frame.GetParameter<RectCommandArgs>();
-
-            Vector2 size = Vector2.Abs(args.End - args.Start);
-            float aspect = size.X / size.Y;
-            float border = args.StrikeSize;
-            float normRad = args.StrikeSize / size.Y;
-            float wideRad = aspect * normRad;
-
-            int flags = 0;
-
-            switch (frame.Command.Name)
-            {
-                case "RectF":
-                    flags |= 1;
-                    break;
-                case "RectS":
-                    flags |= 2;
-                    break;
-                case "RectFS":
-                    flags |= 3;
-                    break;
-            }
-
-            switch (args.BorderKind)
-            {
-                case BorderKind.Inset:
-                    flags |= 2 << 2;
-                    break;
-                case BorderKind.Outset:
-                    flags |= 1 << 2;
-                    break;
-            }
-
-            info = new CommandInfo()
-            {
-                Type = SimpleDrawCommand.Rect,
-                Flags = flags,
-                Arg0 = aspect,
-                Arg1 = normRad,
-            };
-
-            SetCommandCommonBrush(ref info, args.FillBrush, args.StrikeBrush);
-
-            _calls.Transforms(Executor.TransformStack.Top);
-            _calls.Begin(PrimitiveType.Triangles);
-
-            _calls.CommandIndex(index);
-
-            Vector2 t00 = new Vector2(-wideRad, -normRad);
-            Vector2 t10 = new Vector2(1+wideRad, -normRad);
-            Vector2 t01 = new Vector2(-wideRad, 1+normRad);
-            Vector2 t11 = new Vector2(1+wideRad, 1+normRad);
-
-            Vector3 x00 = new Vector3(args.Start.X - border, args.Start.Y - border, args.Depth);
-            Vector3 x10 = new Vector3(args.End.X + border, args.Start.Y - border, args.Depth);
-            Vector3 x01 = new Vector3(args.Start.X - border, args.End.Y + border, args.Depth);
-            Vector3 x11 = new Vector3(args.End.X + border, args.End.Y + border, args.Depth);
-
-            _calls.TexCoords2(t00);
-            _calls.Vertex3(x00);
-            _calls.TexCoords2(t01);
-            _calls.Vertex3(x01);
-            _calls.TexCoords2(t11);
-            _calls.Vertex3(x11);
-
-            _calls.TexCoords2(t00);
-            _calls.Vertex3(x00);
-            _calls.TexCoords2(t11);
-            _calls.Vertex3(x11);
-            _calls.TexCoords2(t10);
-            _calls.Vertex3(x10);
-
-            _calls.End();
-        }
-
-        protected void SetCommandCommonBrush(ref CommandInfo info, IBrush? fill, IBrush? border)
-        {
-            switch (fill?.Kind.Name)
-            {
-                case "DB_Brush_solid":
-                    SolidBrush solid = (SolidBrush)fill;
-                    Vector4 color = new Vector4(solid.Color.R/255f, solid.Color.G/255f, solid.Color.B/255f, solid.Color.A/255f);
-                    info.FgColor = color;
-                    break;
-                case "DB_Brush_gradient":
-                    GradientBrush gradient = (GradientBrush)fill;
-                    GradientUniformBuffer gradients = Executor.ResourcePool.GetResourceManager<GradientUniformBuffer>();
-                    gradients.Initialize();
-                    GradientUniformBuffer.Entry entry = gradients.InternGradient(gradient.Gradient);
-                    info.FgGradientIndex = entry.Offset;
-                    info.FgGradientCount = entry.Count;
-                    break;
-                case null:
-                    // Craete a magenta brush for this.
-                    info.FgColor = new Vector4(1, 0, 1, 1);
-                    break;
-            }
-
-            switch (border?.Kind.Name)
-            {
-                case "DB_Brush_solid":
-                    SolidBrush solid = (SolidBrush)border;
-                    Vector4 color = new Vector4(solid.Color.R/255f, solid.Color.G/255f, solid.Color.B/255f, solid.Color.A/255f);
-                    info.BgColor = color;
-                    break;
-                case "DB_Brush_gradient":
-                    GradientBrush gradient = (GradientBrush)border;
-                    GradientUniformBuffer gradients = Executor.ResourcePool.GetResourceManager<GradientUniformBuffer>();
-                    gradients.Initialize();
-                    GradientUniformBuffer.Entry entry = gradients.InternGradient(gradient.Gradient);
-                    info.BgGradientIndex = entry.Offset;
-                    info.BgGradientCount = entry.Count;
-                    break;
-                case null:
-                    // Craete a magenta brush for this.
-                    info.BgColor = new Vector4(1, 0, 1, 1);
-                    break;
-            }
-        }
-
-        private void LoadShaders()
-        {
-            using Stream vsource = FetchEmbeddedResource("Dashboard.Drawing.OpenGL.Executors.simple.vert");
-            using Stream fsource = FetchEmbeddedResource("Dashboard.Drawing.OpenGL.Executors.simple.frag");
-            int vs = ShaderUtil.CompileShader(ShaderType.VertexShader, vsource);
-            int fs = ShaderUtil.CompileShader(ShaderType.FragmentShader, fsource);
-            _program = ShaderUtil.LinkProgram(vs, fs, new []
-            {
-                "a_v3Position",
-                "a_v2TexCoords",
-                "a_iCmdIndex",
-            });
-            GL.DeleteShader(vs);
-            GL.DeleteShader(fs);
-
-            GL.UniformBlockBinding(_program, GL.GetUniformBlockIndex(_program, "CommandBlock"), 0);
-        }
-
-        private static Stream FetchEmbeddedResource(string name)
-        {
-            return typeof(BaseCommandExecutor).Assembly.GetManifestResourceStream(name)!;
-        }
-    }
-}

Dashboard.Drawing.OpenGL/Executors/TextCommandExecutor.cs

@@ -1,243 +0,0 @@
-using System.Reflection;
-using System.Runtime.InteropServices;
-using BlurgText;
-using Dashboard.Drawing.OpenGL.Text;
-using OpenTK.Graphics.OpenGL;
-using OpenTK.Mathematics;
-
-namespace Dashboard.Drawing.OpenGL.Executors
-{
-    public class TextCommandExecutor : ICommandExecutor, IInitializer
-    {
-        public IEnumerable<string> Extensions { get; } = new[] { "DB_Text" };
-        public IContextExecutor Executor { get; private set; }
-        private BlurgEngine Engine => Executor.ResourcePool.GetResourceManager<BlurgEngine>();
-        public bool IsInitialized { get; private set; }
-
-        private DrawCallRecorder _recorder;
-        private int _program = 0;
-        private int _transformsLocation = -1;
-        private int _atlasLocation = -1;
-        private int _borderWidthLocation = -1;
-        private int _borderColorLocation = -1;
-        private int _fillColorLocation = -1;
-
-        public TextCommandExecutor()
-        {
-            Executor = null!;
-            _recorder = new DrawCallRecorder(this);
-        }
-
-        public void Initialize()
-        {
-            if (IsInitialized)
-                return;
-            IsInitialized = true;
-
-            Assembly self = typeof(TextCommandExecutor).Assembly;
-
-            using Stream vsource = self.GetManifestResourceStream("Dashboard.Drawing.OpenGL.Executors.text.vert")!;
-            using Stream fsource = self.GetManifestResourceStream("Dashboard.Drawing.OpenGL.Executors.text.frag")!;
-            int vs = ShaderUtil.CompileShader(ShaderType.VertexShader, vsource);
-            int fs = ShaderUtil.CompileShader(ShaderType.FragmentShader, fsource);
-            _program = ShaderUtil.LinkProgram(vs, fs, new []
-            {
-                "a_v3Position",
-                "a_v2TexCoords",
-            });
-            GL.DeleteShader(vs);
-            GL.DeleteShader(fs);
-
-            _transformsLocation = GL.GetUniformLocation(_program, "m4Transforms");
-            _atlasLocation = GL.GetUniformLocation(_program, "txAtlas");
-            _borderWidthLocation = GL.GetUniformLocation(_program, "fBorderWidth");
-            _borderColorLocation = GL.GetUniformLocation(_program, "v4BorderColor");
-            _fillColorLocation = GL.GetUniformLocation(_program, "v4FillColor");
-
-            _recorder.Initialize();
-        }
-
-        public void SetContextExecutor(IContextExecutor executor)
-        {
-            Executor = executor;
-        }
-
-        public void BeginFrame()
-        {
-        }
-
-        public void BeginDraw()
-        {
-            _recorder.Clear();
-        }
-
-        public void EndDraw()
-        {
-            GL.UseProgram(_program);
-            GL.Enable(EnableCap.Blend);
-            GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
-            _recorder.Execute();
-            GL.Disable(EnableCap.Blend);
-        }
-
-        public void EndFrame()
-        {
-        }
-
-        public void ProcessCommand(ICommandFrame frame)
-        {
-            switch (frame.Command.Name)
-            {
-                case "Text":
-                    DrawText(frame);
-                    break;
-            }
-        }
-
-        private void DrawText(ICommandFrame frame)
-        {
-            TextCommandArgs args = frame.GetParameter<TextCommandArgs>();
-            DbBlurgFont font = Engine.InternFont(args.Font);
-
-            BlurgColor color;
-            switch (args.TextBrush)
-            {
-            case SolidBrush solid:
-                color = new BlurgColor()
-                {
-                    R = solid.Color.R,
-                    G = solid.Color.G,
-                    B = solid.Color.B,
-                    A = solid.Color.A,
-                };
-                break;
-            default:
-                color = new BlurgColor() { R = 255, G = 0, B = 255, A = 255 };
-                break;
-            }
-
-            BlurgResult? result = Engine.Blurg.BuildString(font.Font, font.Size, color, args.Text);
-
-            if (result == null)
-                return;
-
-            Vector3 position = new Vector3(args.Position.X, args.Position.Y, args.Position.Z);
-            ExecuteBlurgResult(result, position);
-
-            result.Dispose();
-        }
-
-        private void ExecuteBlurgResult(BlurgResult result, Vector3 position)
-        {
-            Matrix4 transforms = Executor.TransformStack.Top;
-
-            for (int i = 0; i < result.Count; i++)
-            {
-                BlurgRect rect = result[i];
-
-                int texture = (int)rect.UserData;
-                Vector4 color = new Vector4(rect.Color.R / 255f, rect.Color.G / 255f, rect.Color.B / 255f,
-                    rect.Color.A / 255f);
-
-                if (i == 0)
-                {
-                    _recorder.Begin(PrimitiveType.Triangles, new Call()
-                    {
-                        Texture = texture,
-                        FillColor = color,
-                        Transforms = transforms,
-                    });
-                }
-                else if (
-                    _recorder.CurrentCall.Texture != texture ||
-                    _recorder.CurrentCall.FillColor != color)
-                {
-                    _recorder.End();
-                    Call call = new Call()
-                    {
-                        Texture = texture,
-                        FillColor = color,
-                        Transforms = transforms,
-                    };
-                    _recorder.Begin(PrimitiveType.Triangles, call);
-                }
-
-                Vector3 p00 = new Vector3(rect.X, rect.Y, 0) + position;
-                Vector3 p10 = p00 + new Vector3(rect.Width, 0, 0);
-                Vector3 p11 = p00 + new Vector3(rect.Width, rect.Height, 0);
-                Vector3 p01 = p00 + new Vector3(0, rect.Height, 0);
-
-                Vector2 uv00 = new Vector2(rect.U0, rect.V0);
-                Vector2 uv10 = new Vector2(rect.U1, rect.V0);
-                Vector2 uv11 = new Vector2(rect.U1, rect.V1);
-                Vector2 uv01 = new Vector2(rect.U0, rect.V1);
-
-                _recorder.Vertex(p00, uv00);
-                _recorder.Vertex(p10, uv10);
-                _recorder.Vertex(p11, uv11);
-
-                _recorder.Vertex(p00, uv00);
-                _recorder.Vertex(p11, uv11);
-                _recorder.Vertex(p01, uv01);
-            }
-            _recorder.End();
-        }
-
-        private struct Call
-        {
-            public Matrix4 Transforms = Matrix4.Identity;
-            public int Texture = 0;
-            public float BorderWidth = 0f;
-            public Vector4 FillColor = Vector4.One;
-            public Vector4 BorderColor = new Vector4(0,0,0,1);
-
-            public Call()
-            {
-            }
-        }
-
-        [StructLayout(LayoutKind.Explicit, Size = 8 * sizeof(float))]
-        private struct Vertex
-        {
-            [FieldOffset(0)]
-            public Vector3 Position;
-            [FieldOffset(4 * sizeof(float))]
-            public Vector2 TexCoords;
-        }
-
-        private class DrawCallRecorder : DrawCallRecorder<Call, Vertex>
-        {
-            private TextCommandExecutor Executor { get; }
-
-            public DrawCallRecorder(TextCommandExecutor executor)
-            {
-                Executor = executor;
-            }
-
-            public void Vertex(Vector3 position, Vector2 texCoords)
-            {
-                Vertex(new Vertex(){Position = position, TexCoords = texCoords});
-            }
-
-            protected override void PrepareCall(in Call call)
-            {
-                Matrix4 transforms = call.Transforms;
-                GL.UniformMatrix4f(Executor._transformsLocation, 1, true, ref transforms);
-                GL.Uniform1f(Executor._borderWidthLocation, call.BorderWidth);
-                GL.Uniform4f(Executor._borderColorLocation, 1, in call.BorderColor);
-                GL.Uniform4f(Executor._fillColorLocation, 1, in call.FillColor);
-                GL.Uniform1i(Executor._atlasLocation, 0);
-                GL.ActiveTexture(TextureUnit.Texture0);
-                GL.BindTexture(TextureTarget.Texture2d, call.Texture);
-            }
-
-            protected override void SetVertexFormat()
-            {
-                GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, VertexSize, 0);
-                GL.VertexAttribPointer(1, 2, VertexAttribPointerType.Float, false, VertexSize, 4*sizeof(float));
-                GL.EnableVertexAttribArray(0);
-                GL.EnableVertexAttribArray(1);
-            }
-        }
-    }
-}

Dashboard.Drawing.OpenGL/Executors/gradient.glsl

@@ -1,55 +0,0 @@
-#ifndef _GRADIENT_GLSL_
-#define _GRADIENT_GLSL_
-
-#define DB_GRADIENT_MAX 16
-
-struct Gradient_t {
-    float fPosition;
-    float pad0;
-    float pad1;
-    float pad2;
-    vec4  v4Color;
-};
-
-uniform GradientBlock
-{
-    Gradient_t vstGradientStops[DB_GRADIENT_MAX];
-};
-
-vec4 getGradientColor(float position, int index, int count)
-{
-    position = clamp(position, 0, 1);
-
-    int i0 = 0;
-    float p0 = vstGradientStops[index + i0].fPosition;
-
-    int i1 = count - 1;
-    float p1 = vstGradientStops[index + i1].fPosition;
-
-    for (int i = 0; i < count; i++)
-    {
-        float px = vstGradientStops[index + i].fPosition;
-
-        if (px > p0 && px <= position)
-        {
-            p0 = px;
-            i0 = i;
-        }
-
-        if (px < p1 && px >= position)
-        {
-            p1 = px;
-            i1 = i;
-        }
-    }
-
-    vec4 c0 = vstGradientStops[index + i0].v4Color;
-    vec4 c1 = vstGradientStops[index + i1].v4Color;
-
-    float l = p1 - p0;
-    float w = (l > 0) ? (position - p0) / (p1 - p0) : 0;
-
-    return mix(c0, c1, w);
-}
-
-#endif

Dashboard.Drawing.OpenGL/Executors/simple.frag

@@ -1,224 +0,0 @@
-#version 140
-
-#define DB_GRADIENT_MAX 16
-#define DB_COMMAND_MAX  64
-
-#define CMD_POINT 1
-#define CMD_LINE  2
-#define CMD_RECT  3
-
-#define STRIKE_CENTER 0
-#define STRIKE_OUTSET 1
-#define STRIKE_INSET  2
-
-in vec3 v_v3Position;
-in vec2 v_v2TexCoords;
-flat in int v_iCmdIndex;
-
-out vec4 f_Color;
-
-uniform sampler2D      txForeground;
-uniform sampler2D      txBackground;
-
-struct Gradient_t {
-    float fPosition;
-    float pad0;
-    float pad1;
-    float pad2;
-    vec4  v4Color;
-};
-
-uniform GradientBlock
-{
-    Gradient_t vstGradientStops[DB_GRADIENT_MAX];
-};
-
-vec4 getGradientColor(float position, int index, int count)
-{
-    position = clamp(position, 0, 1);
-
-    int i0 = 0;
-    float p0 = vstGradientStops[index + i0].fPosition;
-
-    int i1 = count - 1;
-    float p1 = vstGradientStops[index + i1].fPosition;
-
-    for (int i = 0; i < count; i++)
-    {
-        float px = vstGradientStops[index + i].fPosition;
-
-        if (px > p0 && px <= position)
-        {
-            p0 = px;
-            i0 = i;
-        }
-
-        if (px < p1 && px >= position)
-        {
-            p1 = px;
-            i1 = i;
-        }
-    }
-
-    vec4 c0 = vstGradientStops[index + i0].v4Color;
-    vec4 c1 = vstGradientStops[index + i1].v4Color;
-
-    float l = p1 - p0;
-    float w = (l > 0) ? (position - p0) / (p1 - p0) : 0;
-
-    return mix(c0, c1, w);
-}
-
-struct CommandInfo_t {
-    int iCommand;
-    int iFlags;
-    float fArg0;
-    float fArg1;
-
-    int iFgGradientIndex;
-    int iFgGradientCount;
-    int iBgGradientIndex;
-    int iBgGradientCount;
-
-    vec4 v4FgColor;
-    vec4 v4BgColor;
-};
-
-uniform CommandBlock
-{
-  CommandInfo_t vstCommandInfo[DB_COMMAND_MAX];
-};
-
-CommandInfo_t getCommandInfo()
-{
-    return vstCommandInfo[v_iCmdIndex];
-}
-
-vec4 fgColor()
-{
-    return getCommandInfo().v4FgColor;
-}
-
-vec4 bgColor()
-{
-    return getCommandInfo().v4BgColor;
-}
-
-void Point(void)
-{
-    vec4 fg = fgColor();
-
-    if (dot(v_v2TexCoords, v_v2TexCoords) <= 0.25)
-        f_Color = fg;
-    else
-        discard;
-}
-
-#define LINE_NORMALIZED_RADIUS(cmd) cmd.fArg0
-void Line(void)
-{
-    vec4 fg = fgColor();
-    CommandInfo_t cmd = getCommandInfo();
-
-    float t = clamp(v_v2TexCoords.x, 0, 1);
-    vec2 dv = v_v2TexCoords - vec2(t, 0);
-    float d = dot(dv, dv);
-
-    float lim = LINE_NORMALIZED_RADIUS(cmd);
-    lim *= lim;
-
-    if (d <= lim)
-        f_Color = fg;
-    else
-        discard;
-}
-
-#define RECT_ASPECT_RATIO(cmd) (cmd.fArg0)
-#define RECT_BORDER_WIDTH(cmd) (cmd.fArg1)
-#define RECT_FILL(cmd) ((cmd.iFlags & (1 << 0)) != 0)
-#define RECT_BORDER(cmd) ((cmd.iFlags & (1 << 1)) != 0)
-#define RECT_STRIKE_MASK  3
-#define RECT_STRIKE_SHIFT 2
-#define RECT_STRIKE_KIND(cmd) ((cmd.iFlags & RECT_STRIKE_MASK) >> RECT_STRIKE_SHIFT)
-void Rect(void)
-{
-    vec4 fg = fgColor();
-    vec4 bg = bgColor();
-
-    CommandInfo_t cmd = getCommandInfo();
-    float aspect = RECT_ASPECT_RATIO(cmd);
-    float border = RECT_BORDER_WIDTH(cmd);
-    int strikeKind = RECT_STRIKE_KIND(cmd);
-
-    vec2 p = abs(2*v_v2TexCoords - vec2(1));
-    p.x = p.x/aspect;
-
-    float m0;
-    float m1;
-    if (!RECT_BORDER(cmd))
-    {
-        m0 = 1;
-        m1 = 1;
-    }
-    else if (strikeKind == STRIKE_OUTSET)
-    {
-        m0 = 1;
-        m1 = border;
-    }
-    else if (strikeKind == STRIKE_INSET)
-    {
-        m0 = 1-border;
-        m1 = 1;
-    }
-    else // strikeKind == STRIKE_CENTER
-    {
-        float h = 0.5 * border;
-        m0 = 1-border;
-        m1 = 1+border;
-    }
-
-    if (p.x > m1*aspect || p.y > m1)
-    {
-        discard;
-    }
-
-    if (RECT_FILL(cmd))
-    {
-        if (p.x <= 1 && p.y <= 1)
-        {
-            f_Color = fg;
-        }
-    }
-
-    if (RECT_BORDER(cmd))
-    {
-        float x = clamp(p.x, aspect*m0, aspect*m1);
-        float y = clamp(p.y, m0, m1);
-
-        if (p.x == x || p.y == y)
-        {
-            f_Color = bg;
-        }
-    }
-}
-
-void main(void)
-{
-    switch (getCommandInfo().iCommand)
-    {
-    case CMD_POINT:
-        Point();
-        break;
-    case CMD_LINE:
-        Line();
-        break;
-    case CMD_RECT:
-        Rect();
-        break;
-
-    default:
-        // Unimplemented value.
-        f_Color = vec4(1, 0, 1, 1);
-        break;
-    }
-}

Dashboard.Drawing.OpenGL/Executors/simple.vert

@@ -1,21 +0,0 @@
-#version 140
-
-in vec3 a_v3Position;
-in vec2 a_v2TexCoords;
-in int  a_iCmdIndex;
-
-out vec3 v_v3Position;
-out vec2 v_v2TexCoords;
-flat out int  v_iCmdIndex;
-
-uniform mat4 m4Transforms;
-
-void main(void)
-{
-    vec4 position = vec4(a_v3Position, 1) * m4Transforms;
-    gl_Position = position;
-    v_v3Position = position.xyz/position.w;
-
-    v_v2TexCoords = a_v2TexCoords;
-    v_iCmdIndex = a_iCmdIndex;
-}

Dashboard.Drawing.OpenGL/GLEngine.cs

@@ -1,40 +0,0 @@
-using Dashboard.Drawing.OpenGL.Text;
-using Dashboard.OpenGL;
-using OpenTK;
-using OpenTK.Graphics;
-
-namespace Dashboard.Drawing.OpenGL
-{
-    public class GLEngine
-    {
-        private readonly Dictionary<IGLContext, ContextExecutor> _executors = new Dictionary<IGLContext, ContextExecutor>();
-
-        public bool IsInitialized { get; private set; } = false;
-        public ContextResourcePoolManager ResourcePoolManager { get; private set; } = new ContextResourcePoolManager();
-
-        public void Initialize(IBindingsContext? bindingsContext = null)
-        {
-            if (IsInitialized)
-                return;
-            IsInitialized = true;
-
-            if (bindingsContext != null)
-                GLLoader.LoadBindings(bindingsContext);
-
-            Typesetter.Backend = BlurgEngine.Global;
-        }
-
-        public ContextExecutor GetExecutor(IGLContext glContext)
-        {
-            if (!_executors.TryGetValue(glContext, out ContextExecutor? executor))
-            {
-                executor = new ContextExecutor(this, glContext);
-                executor.Initialize();
-
-                _executors.Add(glContext, executor);
-            }
-
-            return executor;
-        }
-    }
-}

Dashboard.Drawing.OpenGL/GradientUniformBuffer.cs

@@ -1,90 +0,0 @@
-using System.Runtime.InteropServices;
-using Dashboard.OpenGL;
-using OpenTK.Mathematics;
-
-namespace Dashboard.Drawing.OpenGL
-{
-    public class GradientUniformBuffer : IInitializer, IGLDisposable, IResourceManager
-    {
-        private bool _isDisposed;
-        private int _top = 0;
-        private readonly MappableBuffer<GradientUniformStruct> _buffer = new MappableBuffer<GradientUniformStruct>();
-        private readonly Dictionary<Gradient, Entry> _entries = new Dictionary<Gradient, Entry>();
-
-        public bool IsInitialized { get; private set; } = false;
-
-        public void Initialize()
-        {
-            if (IsInitialized)
-                return;
-
-            IsInitialized = true;
-
-            _buffer.Initialize();
-        }
-
-        public Entry InternGradient(Gradient gradient)
-        {
-            if (_entries.TryGetValue(gradient, out Entry entry))
-                return entry;
-
-            int count = gradient.Count;
-            int offset = _top;
-            _top += count;
-
-            _buffer.EnsureCapacity(_top);
-            _buffer.Map();
-            Span<GradientUniformStruct> span = _buffer.AsSpan()[offset.._top];
-
-            for (int i = 0; i < count; i++)
-            {
-                GradientStop stop = gradient[i];
-                span[i] = new GradientUniformStruct()
-                {
-                    Position = stop.Position,
-                    Color = new Vector4(
-                        stop.Color.R / 255f,
-                        stop.Color.G / 255f,
-                        stop.Color.B / 255f,
-                        stop.Color.A / 255f),
-                };
-            }
-
-            entry = new Entry(offset, count);
-            _entries.Add(gradient, entry);
-
-            return entry;
-        }
-
-        public void Clear()
-        {
-            _entries.Clear();
-            _top = 0;
-        }
-
-        public record struct Entry(int Offset, int Count);
-
-        public void Dispose() => Dispose(true);
-
-        public void Dispose(bool safeExit)
-        {
-            if (_isDisposed)
-                return;
-            _isDisposed = true;
-
-            _buffer.Dispose(safeExit);
-        }
-
-        string IResourceManager.Name { get; } = nameof(GradientUniformBuffer);
-    }
-
-    [StructLayout(LayoutKind.Explicit, Size = 8 * sizeof(float))]
-    public struct GradientUniformStruct
-    {
-        [FieldOffset(0 * sizeof(float))]
-        public float Position;
-
-        [FieldOffset(4 * sizeof(float))]
-        public Vector4 Color;
-    }
-}

Dashboard.Drawing.OpenGL/IArc.cs

@@ -1,24 +0,0 @@
-namespace Dashboard.Drawing.OpenGL
-{
-    /// <summary>
-    /// Atomic reference counter.
-    /// </summary>
-    public interface IArc : IDisposable
-    {
-        /// <summary>
-        /// The number of references to this.
-        /// </summary>
-        int References { get; }
-
-        /// <summary>
-        /// Increment the number of references.
-        /// </summary>
-        void IncrementReference();
-
-        /// <summary>
-        /// Decrement the number of references.
-        /// </summary>
-        /// <returns>True if this was the last reference.</returns>
-        bool DecrementReference();
-    }
-}

Dashboard.Drawing.OpenGL/IInitializer.cs

@@ -1,9 +0,0 @@
-namespace Dashboard.Drawing.OpenGL
-{
-    public interface IInitializer
-    {
-        bool IsInitialized { get; }
-
-        void Initialize();
-    }
-}

Dashboard.Drawing.OpenGL/IResourceManager.cs

@@ -1,7 +0,0 @@
-namespace Dashboard.Drawing.OpenGL
-{
-    public interface IResourceManager
-    {
-        public string Name { get; }
-    }
-}

Dashboard.Drawing.OpenGL/MappableBuffer.cs

@@ -1,168 +0,0 @@
-using System.Numerics;
-using System.Runtime.CompilerServices;
-using Dashboard.OpenGL;
-using OpenTK.Graphics.OpenGL;
-
-namespace Dashboard.Drawing.OpenGL
-{
-    public class MappableBuffer<T> : IInitializer, IGLDisposable where T : struct
-    {
-        public int Handle { get; private set; } = 0;
-        public int Capacity { get; set; } = BASE_CAPACITY;
-        public IntPtr Pointer { get; private set; } = IntPtr.Zero;
-
-        public bool IsInitialized => Handle != 0;
-
-        private bool _isDisposed = false;
-        private const int BASE_CAPACITY = 4 << 10;  // 4 KiB
-        private const int MAX_INCREMENT = 4 << 20;  // 4 MiB
-
-        ~MappableBuffer()
-        {
-            Dispose(true, false);
-        }
-
-        public void Initialize()
-        {
-            if (IsInitialized)
-                return;
-
-            Handle = GL.GenBuffer();
-            GL.BindBuffer(BufferTarget.ArrayBuffer, Handle);
-            GL.BufferData(BufferTarget.ArrayBuffer, Capacity, IntPtr.Zero, BufferUsage.DynamicDraw);
-        }
-
-        public void EnsureCapacity(int count)
-        {
-            if (count < 0)
-                throw new ArgumentOutOfRangeException(nameof(count));
-
-            if (Capacity > count)
-                return;
-
-            SetSize(count, false);
-        }
-
-        public void SetSize(int count, bool clear = false)
-        {
-            AssertInitialized();
-            Unmap();
-
-            int sz = Unsafe.SizeOf<T>();
-            int oldsize = Capacity * sz;
-            int request = count * sz;
-            int newsize;
-
-            if (request < BASE_CAPACITY)
-                request = BASE_CAPACITY;
-
-            if (request > MAX_INCREMENT)
-            {
-                newsize = ((request + MAX_INCREMENT - 1) / MAX_INCREMENT) * MAX_INCREMENT;
-            }
-            else
-            {
-                newsize = checked((int)BitOperations.RoundUpToPowerOf2((ulong)request));
-            }
-
-            int dest = GL.GenBuffer();
-
-            if (clear)
-            {
-                GL.BindBuffer(BufferTarget.ArrayBuffer, dest);
-                GL.BufferData(BufferTarget.ArrayBuffer, newsize, IntPtr.Zero, BufferUsage.DynamicDraw);
-            }
-            else
-            {
-                GL.BindBuffer(BufferTarget.CopyWriteBuffer, dest);
-                GL.BindBuffer(BufferTarget.CopyReadBuffer, Handle);
-
-                GL.BufferData(BufferTarget.CopyWriteBuffer, newsize, IntPtr.Zero, BufferUsage.DynamicDraw);
-                GL.CopyBufferSubData(CopyBufferSubDataTarget.CopyReadBuffer, CopyBufferSubDataTarget.CopyWriteBuffer, 0, 0, Math.Min(newsize, oldsize));
-            }
-
-            GL.DeleteBuffer(Handle);
-            Handle = dest;
-            Capacity = newsize / Unsafe.SizeOf<T>();
-        }
-
-        public unsafe void Map()
-        {
-            if (Pointer != IntPtr.Zero)
-                return;
-
-            AssertInitialized();
-
-            GL.BindBuffer(BufferTarget.ArrayBuffer, Handle);
-            Pointer = (IntPtr)GL.MapBuffer(BufferTarget.ArrayBuffer, BufferAccess.ReadWrite);
-        }
-
-        public void Unmap()
-        {
-            if (Pointer == IntPtr.Zero)
-                return;
-
-            AssertInitialized();
-
-            GL.BindBuffer(BufferTarget.ArrayBuffer, Handle);
-            GL.UnmapBuffer(BufferTarget.ArrayBuffer);
-            Pointer = IntPtr.Zero;
-        }
-
-        public unsafe Span<T> AsSpan()
-        {
-            if (Pointer == IntPtr.Zero)
-                throw new InvalidOperationException("The buffer is not currently mapped.");
-
-            AssertInitialized();
-
-            return new Span<T>(Pointer.ToPointer(), Capacity);
-        }
-
-        private void AssertInitialized()
-        {
-            if (Handle == 0)
-                throw new InvalidOperationException("The buffer is not initialized.");
-        }
-
-        private void Dispose(bool safeExit, bool disposing)
-        {
-            if (_isDisposed)
-                return;
-            _isDisposed = true;
-
-            if (disposing)
-                GC.SuppressFinalize(this);
-
-            if (safeExit)
-                ContextCollector.Global.DeleteBufffer(Handle);
-        }
-
-        public void Dispose() => Dispose(true, true);
-        public void Dispose(bool safeExit) => Dispose(safeExit, true);
-    }
-
-    public class MappableBumpAllocator<T> : MappableBuffer<T> where T : struct
-    {
-        private int _top = 0;
-        private int _previousTop = 0;
-
-        public ref T Take(out int index)
-        {
-            index = _top;
-            EnsureCapacity(++_top);
-            Map();
-
-            return ref AsSpan()[index];
-        }
-
-        public ref T Take() => ref Take(out _);
-
-        public void Clear()
-        {
-            SetSize(0, true);
-            _previousTop = _top;
-            _top = 0;
-        }
-    }
-}

Dashboard.Drawing.OpenGL/Text/BlurgEngine.cs

@@ -1,193 +0,0 @@
-using System.Diagnostics;
-using System.Drawing;
-using System.Numerics;
-using BlurgText;
-using Dashboard.OpenGL;
-using OpenTK.Graphics.OpenGL;
-using OPENGL = OpenTK.Graphics.OpenGL;
-
-namespace Dashboard.Drawing.OpenGL.Text
-{
-    public class BlurgEngine : IResourceManager, IGLDisposable, ITypeSetter
-    {
-        public string Name { get; } = "BlurgEngine";
-        public Blurg Blurg { get; }
-        public bool SystemFontsEnabled { get; }
-
-        private readonly List<int> _textures = new List<int>();
-
-        public BlurgEngine() : this(false)
-        {
-        }
-
-        private BlurgEngine(bool global)
-        {
-            if (global)
-                Blurg = new Blurg(AllocateTextureGlobal, UpdateTextureGlobal);
-            else
-                Blurg = new Blurg(AllocateTexture, UpdateTexture);
-
-            SystemFontsEnabled = Blurg.EnableSystemFonts();
-        }
-
-        ~BlurgEngine()
-        {
-            Dispose(false, true);
-        }
-
-        public SizeF MeasureString(IFont font, string value)
-        {
-            return MeasureStringInternal(InternFont(font), value);
-        }
-
-        private SizeF MeasureStringInternal(DbBlurgFont font, string value)
-        {
-            Vector2 v = Blurg.MeasureString(font.Font, font.Size, value);
-            return new SizeF(v.X, v.Y);
-        }
-
-        public IFont LoadFont(Stream stream)
-        {
-            string path;
-            Stream dest;
-            for (int i = 0;; i++)
-            {
-                path = Path.GetTempFileName();
-                try
-                {
-                    dest = File.Open(path, FileMode.OpenOrCreate, FileAccess.Write, FileShare.None);
-                }
-                catch (IOException ex)
-                {
-                    if (i < 3)
-                        continue;
-                    else
-                        throw new Exception("Could not open a temporary file for writing the font.", ex);
-                }
-
-                break;
-            }
-
-            stream.CopyTo(dest);
-            dest.Dispose();
-
-            DbBlurgFont font = (DbBlurgFont)LoadFont(path);
-            return font;
-        }
-
-        public IFont LoadFont(string path)
-        {
-            BlurgFont? font = Blurg.AddFontFile(path) ?? throw new Exception("Failed to load the font file.");
-            return new DbBlurgFont(Blurg, font, 12f) { Path = path };
-        }
-
-        public IFont LoadFont(NamedFont font)
-        {
-            // Ignore the stretch argument.
-            bool italic = font.Slant != FontSlant.Normal;
-            BlurgFont? loaded = Blurg.QueryFont(font.Family, new BlurgText.FontWeight((int)font.Weight), italic);
-
-            if (loaded != null)
-                return new DbBlurgFont(Blurg, loaded, 12f);
-            else
-                throw new Exception("Font not found.");
-        }
-
-        public DbBlurgFont InternFont(IFont font)
-        {
-            if (font is NamedFont named)
-            {
-                return (DbBlurgFont)LoadFont(named);
-            }
-            else if (font is DbBlurgFont dblurg)
-            {
-                if (dblurg.Owner != Blurg)
-                {
-                    if (dblurg.Path == null)
-                        return (DbBlurgFont)LoadFont(new NamedFont(dblurg.Family, dblurg.Size, dblurg.Weight,
-                            dblurg.Slant,
-                            dblurg.Stretch));
-                    else
-                        return (DbBlurgFont)LoadFont(dblurg.Path);
-                }
-                else
-                {
-                    return dblurg;
-                }
-            }
-            else
-            {
-                throw new Exception("Unsupported font resource.");
-            }
-        }
-
-        private void UpdateTexture(IntPtr texture, IntPtr buffer, int x, int y, int width, int height)
-        {
-            GL.BindTexture(TextureTarget.Texture2d, (int)texture);
-            GL.TexSubImage2D(TextureTarget.Texture2d, 0, x, y, width, height, OPENGL.PixelFormat.Rgba, PixelType.UnsignedByte, buffer);
-            // GL.TexSubImage2D(TextureTarget.Texture2d, 0, x, y, width, height, OPENGL.PixelFormat.Red, PixelType.Byte, buffer);
-        }
-
-        private IntPtr AllocateTexture(int width, int height)
-        {
-            int texture = GL.GenTexture();
-
-            GL.BindTexture(TextureTarget.Texture2d, texture);
-            GL.TexImage2D(TextureTarget.Texture2d, 0, InternalFormat.Rgba, width, height, 0, OPENGL.PixelFormat.Rgba, PixelType.UnsignedByte, IntPtr.Zero);
-            // GL.TexImage2D(TextureTarget.Texture2d, 0, InternalFormat.R8, width, height, 0, OPENGL.PixelFormat.Red, PixelType.Byte, IntPtr.Zero);
-
-            GL.TexParameteri(TextureTarget.Texture2d, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
-            GL.TexParameteri(TextureTarget.Texture2d, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
-            // GL.TexParameteri(TextureTarget.Texture2d, TextureParameterName.TextureSwizzleR, (int)TextureSwizzle.One);
-            // GL.TexParameteri(TextureTarget.Texture2d, TextureParameterName.TextureSwizzleG, (int)TextureSwizzle.One);
-            // GL.TexParameteri(TextureTarget.Texture2d, TextureParameterName.TextureSwizzleB, (int)TextureSwizzle.One);
-            // GL.TexParameteri(TextureTarget.Texture2d, TextureParameterName.TextureSwizzleA, (int)TextureSwizzle.Red);
-
-            _textures.Add(texture);
-
-            return texture;
-        }
-
-        private bool _isDisposed = false;
-
-        private void Dispose(bool disposing, bool safeExit)
-        {
-            if (_isDisposed)
-                return;
-            _isDisposed = true;
-
-            if (disposing)
-            {
-                Blurg.Dispose();
-                GC.SuppressFinalize(this);
-            }
-
-            if (safeExit)
-            {
-                foreach (int texture in _textures)
-                    ContextCollector.Global.DeleteTexture(texture);
-            }
-        }
-
-        public void Dispose() => Dispose(true, true);
-
-        public void Dispose(bool safeExit) => Dispose(true, safeExit);
-
-        /// <summary>
-        /// The global Blurg engine implements the needed methods for command queues to work.
-        /// </summary>
-        public static BlurgEngine Global { get; } = new BlurgEngine(true);
-
-        private static void UpdateTextureGlobal(IntPtr userdata, IntPtr buffer, int x, int y, int width, int height)
-        {
-            // Report the user error.
-            Debug.WriteLine("Attempt to create or update a texture from the global BlurgEngine.", "Dashboard/BlurgEngine");
-        }
-
-        private static IntPtr AllocateTextureGlobal(int width, int height)
-        {
-            Debug.WriteLine("Attempt to create or update  a texture from the global BlurgEngine.", "Dashboard/BlurgEngine");
-            return IntPtr.Zero;
-        }
-    }
-}

Dashboard.Drawing.OpenGL/Text/BlurgFontExtension.cs

@@ -1,13 +0,0 @@
-namespace Dashboard.Drawing.OpenGL.Text
-{
-    public class BlurgFontExtension : IDrawExtension
-    {
-        public string Name { get; } = "BLURG_Font";
-        public IReadOnlyList<IDrawExtension> Requires { get; } = new [] { FontExtension.Instance };
-        public IReadOnlyList<IDrawCommand> Commands { get; } = new IDrawCommand[] { };
-
-        private BlurgFontExtension() {}
-
-        public static readonly BlurgFontExtension Instance = new BlurgFontExtension();
-    }
-}

Dashboard.Drawing.OpenGL/Text/DbBlurgFont.cs

@@ -1,30 +0,0 @@
-using BlurgText;
-
-namespace Dashboard.Drawing.OpenGL.Text
-{
-    public class DbBlurgFont : IFont
-    {
-        public IDrawExtension Kind { get; } = BlurgFontExtension.Instance;
-        public Blurg Owner { get; }
-        public BlurgFont Font { get; }
-        public float Size { get; }
-        public string Family => Font.FamilyName;
-        public FontWeight Weight => (FontWeight)Font.Weight.Value;
-        public FontSlant Slant => Font.Italic ? FontSlant.Italic : FontSlant.Normal;
-        public FontStretch Stretch => FontStretch.Normal;
-
-        internal string? Path { get; init; }
-
-        public DbBlurgFont(Blurg owner, BlurgFont font, float size)
-        {
-            Owner = owner;
-            Font = font;
-            Size = size;
-        }
-
-        public DbBlurgFont WithSize(float size)
-        {
-            return new DbBlurgFont(Owner, Font, size);
-        }
-    }
-}

Dashboard.Drawing.OpenGL/TransformStack.cs

@@ -1,51 +0,0 @@
-using OpenTK.Mathematics;
-
-namespace Dashboard.Drawing.OpenGL
-{
-    /// <summary>
-    /// The current stack of transformations.
-    /// </summary>
-    public class TransformStack
-    {
-        private Matrix4 _top = Matrix4.Identity;
-        private readonly Stack<Matrix4> _stack = new Stack<Matrix4>();
-
-        /// <summary>
-        /// The top-most transform matrix.
-        /// </summary>
-        public ref readonly Matrix4 Top => ref _top;
-
-        /// <summary>
-        /// The number of matrices in the stack.
-        /// </summary>
-        public int Count => _stack.Count;
-
-        /// <summary>
-        /// Push a transform.
-        /// </summary>
-        /// <param name="transform">The transform to push.</param>
-        public void Push(in Matrix4 transform)
-        {
-            _stack.Push(_top);
-            _top = transform * _top;
-        }
-
-        /// <summary>
-        /// Pop a transform.
-        /// </summary>
-        public void Pop()
-        {
-            if (!_stack.TryPop(out _top))
-                _top = Matrix4.Identity;
-        }
-
-        /// <summary>
-        /// Clear the stack of transformations.
-        /// </summary>
-        public void Clear()
-        {
-            _stack.Clear();
-            _top = Matrix4.Identity;
-        }
-    }
-}

Dashboard.Drawing/Brush.cs

@@ -1,52 +0,0 @@
-using System;
-using System.Drawing;
-
-namespace Dashboard.Drawing
-{
-    public class BrushExtension : DrawExtension
-    {
-        private BrushExtension() : base("DB_Brush") { }
-
-        public static readonly BrushExtension Instance = new BrushExtension();
-    }
-
-    public interface IBrush : IDrawResource
-    {
-    }
-
-    public readonly struct SolidBrush(Color color) : IBrush
-    {
-        public IDrawExtension Kind { get; } = SolidBrushExtension.Instance;
-        public Color Color { get; } = color;
-
-        public override int GetHashCode()
-        {
-            return HashCode.Combine(Kind, Color);
-        }
-    }
-
-    public readonly struct GradientBrush(Gradient gradient) : IBrush
-    {
-        public IDrawExtension Kind { get; } = GradientBrushExtension.Instance;
-        public Gradient Gradient { get; } = gradient;
-
-        public override int GetHashCode()
-        {
-            return HashCode.Combine(Kind, Gradient);
-        }
-    }
-
-    public class SolidBrushExtension : DrawExtension
-    {
-        private SolidBrushExtension() : base("DB_Brush_solid", new[] { BrushExtension.Instance }) { }
-
-        public static readonly SolidBrushExtension Instance = new SolidBrushExtension();
-    }
-
-    public class GradientBrushExtension : DrawExtension
-    {
-        private GradientBrushExtension() : base("DB_Brush_gradient", new[] { BrushExtension.Instance }) { }
-
-        public static readonly GradientBrushExtension Instance = new GradientBrushExtension();
-    }
-}

Dashboard.Drawing/Dashboard.Drawing.csproj

@@ -1,13 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
-    <ImplicitUsings>disable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Dashboard.Common\Dashboard.Common.csproj" />
-  </ItemGroup>
-
-</Project>

Dashboard.Drawing/DbBaseCommands.cs

@@ -1,292 +0,0 @@
-using System;
-using System.Collections;
-using System.Diagnostics.CodeAnalysis;
-using System.Numerics;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-
-namespace Dashboard.Drawing
-{
-    public class DbBaseCommands : DrawExtension
-    {
-        public DrawCommand<PointCommandArgs> DrawPoint { get; }
-        public DrawCommand<LineCommandArgs> DrawLine { get; }
-        public RectCommand DrawRectF { get; }
-        public RectCommand DrawRectS { get; }
-        public RectCommand DrawRectFS { get; }
-
-        private DbBaseCommands() : base("DB_base",
-            new[]
-            {
-                BrushExtension.Instance,
-            })
-        {
-            AddCommand(DrawPoint = new DrawCommand<PointCommandArgs>("Point", this, PointCommandArgs.CommandSize));
-            AddCommand(DrawLine = new DrawCommand<LineCommandArgs>("Line", this, LineCommandArgs.CommandSize));
-            AddCommand(DrawRectF = new RectCommand(this, RectCommand.Mode.Fill));
-            AddCommand(DrawRectS = new RectCommand(this, RectCommand.Mode.Strike));
-            AddCommand(DrawRectFS = new RectCommand(this, RectCommand.Mode.FillStrike));
-        }
-
-        public static readonly DbBaseCommands Instance = new DbBaseCommands();
-    }
-
-    public struct PointCommandArgs : IParameterSerializer<PointCommandArgs>
-    {
-        public Vector2 Position { get; private set; }
-        public float Depth { get; private set; }
-        public float Size { get; private set; }
-        public IBrush? Brush { get; private set; }
-
-        public PointCommandArgs(Vector2 position, float depth, float size, IBrush brush)
-        {
-            Position = position;
-            Depth = depth;
-            Brush = brush;
-            Size = size;
-        }
-
-        public int Serialize(DrawQueue queue, Span<byte> bytes)
-        {
-            if (bytes.Length < CommandSize)
-                return CommandSize;
-
-            Span<Value> value = stackalloc Value[]
-            {
-                new Value(Position, Depth, Size, queue.RequireResource(Brush!))
-            };
-
-            MemoryMarshal.AsBytes(value).CopyTo(bytes);
-            return CommandSize;
-        }
-
-        [MemberNotNull(nameof(Brush))]
-        public void Deserialize(DrawQueue queue, ReadOnlySpan<byte> bytes)
-        {
-            if (bytes.Length < CommandSize)
-                throw new Exception("Not enough bytes");
-
-            Value value = MemoryMarshal.AsRef<Value>(bytes);
-
-            Position = value.Position;
-            Depth = value.Depth;
-            Size = value.Size;
-            Brush = (IBrush)queue.Resources[value.BrushIndex];
-        }
-
-        private record struct Value(Vector2 Position, float Depth, float Size, int BrushIndex);
-
-        public static readonly int CommandSize = Unsafe.SizeOf<Value>();
-    }
-
-    public struct LineCommandArgs : IParameterSerializer<LineCommandArgs>
-    {
-        public Vector2 Start { get; private set; }
-        public Vector2 End { get; private set; }
-        public float Depth { get; private set; }
-        public float Size { get; private set; }
-        public IBrush? Brush { get; private set; }
-
-        public LineCommandArgs(Vector2 start, Vector2 end, float depth, float size, IBrush brush)
-        {
-            Start = start;
-            End = end;
-            Depth = depth;
-            Size = size;
-            Brush = brush;
-        }
-
-        public int Serialize(DrawQueue queue, Span<byte> bytes)
-        {
-            if (bytes.Length < CommandSize)
-                return CommandSize;
-
-            Span<Value> value = stackalloc Value[]
-            {
-                new Value(Start, End, Depth, Size, queue.RequireResource(Brush!))
-            };
-
-            MemoryMarshal.AsBytes(value).CopyTo(bytes);
-            return CommandSize;
-        }
-
-        public void Deserialize(DrawQueue queue, ReadOnlySpan<byte> bytes)
-        {
-            if (bytes.Length < CommandSize)
-                throw new Exception("Not enough bytes");
-
-            Value value = MemoryMarshal.AsRef<Value>(bytes);
-
-            Start = value.Start;
-            End = value.End;
-            Depth = value.Depth;
-            Size = value.Size;
-            Brush = (IBrush)queue.Resources[value.BrushIndex];
-        }
-
-        private record struct Value(Vector2 Start, Vector2 End, float Depth, float Size, int BrushIndex);
-
-        public static readonly int CommandSize = Unsafe.SizeOf<Value>();
-    }
-
-
-
-    public class RectCommand : IDrawCommand<RectCommandArgs>
-    {
-        private readonly Mode _mode;
-        public string Name { get; }
-        public IDrawExtension Extension { get; }
-        public int Length { get; }
-
-        public RectCommand(IDrawExtension extension, Mode mode)
-        {
-            Extension = extension;
-            _mode = mode;
-
-            switch (mode)
-            {
-            case Mode.Fill:
-                Name = "RectF";
-                Length = Unsafe.SizeOf<RectF>();
-                break;
-            case Mode.Strike:
-                Name = "RectS";
-                Length = Unsafe.SizeOf<RectS>();
-                break;
-            default:
-                Name = "RectFS";
-                Length = Unsafe.SizeOf<RectFS>();
-                break;
-            }
-        }
-
-        object? IDrawCommand.GetParams(DrawQueue queue, ReadOnlySpan<byte> param)
-        {
-            return GetParams(queue, param);
-        }
-
-        public RectCommandArgs GetParams(DrawQueue queue, ReadOnlySpan<byte> param)
-        {
-            if (param.Length < Length)
-                throw new Exception("Not enough bytes");
-
-            RectCommandArgs args;
-
-            switch (_mode)
-            {
-            case Mode.Fill:
-                ref readonly RectF f = ref MemoryMarshal.AsRef<RectF>(param);
-                args = new RectCommandArgs(f.Start, f.End, f.Depth, (IBrush)queue.Resources[f.FillBrushIndex]);
-                break;
-            case Mode.Strike:
-                ref readonly RectS s = ref MemoryMarshal.AsRef<RectS>(param);
-                args = new RectCommandArgs(s.Start, s.End, s.Depth, (IBrush)queue.Resources[s.StrikeBrushIndex], s.StrikeSize, s.BorderKind);
-                break;
-            default:
-                ref readonly RectFS fs = ref MemoryMarshal.AsRef<RectFS>(param);
-                args = new RectCommandArgs(fs.Start, fs.End, fs.Depth, (IBrush)queue.Resources[fs.FillBrushIndex],
-                    (IBrush)queue.Resources[fs.StrikeBrushIndex], fs.StrikeSize, fs.BorderKind);
-                break;
-            }
-
-            return args;
-        }
-
-        public int WriteParams(DrawQueue queue, object? obj, Span<byte> param)
-        {
-            return WriteParams(queue, (RectCommandArgs)obj, param);
-        }
-
-        public int WriteParams(DrawQueue queue, RectCommandArgs obj, Span<byte> param)
-        {
-            if (param.Length < Length)
-                return Length;
-
-            switch (_mode)
-            {
-                case Mode.Fill:
-                    ref RectF f = ref MemoryMarshal.AsRef<RectF>(param);
-                    f.Start = obj.Start;
-                    f.End = obj.End;
-                    f.Depth = obj.Depth;
-                    f.FillBrushIndex = queue.RequireResource(obj.FillBrush!);
-                    break;
-                case Mode.Strike:
-                    ref RectS s = ref MemoryMarshal.AsRef<RectS>(param);
-                    s.Start = obj.Start;
-                    s.End = obj.End;
-                    s.Depth = obj.Depth;
-                    s.StrikeBrushIndex = queue.RequireResource(obj.StrikeBrush!);
-                    s.StrikeSize = obj.StrikeSize;
-                    s.BorderKind = obj.BorderKind;
-                    break;
-                default:
-                    ref RectFS fs = ref MemoryMarshal.AsRef<RectFS>(param);
-                    fs.Start = obj.Start;
-                    fs.End = obj.End;
-                    fs.Depth = obj.Depth;
-                    fs.FillBrushIndex = queue.RequireResource(obj.FillBrush!);
-                    fs.StrikeBrushIndex = queue.RequireResource(obj.StrikeBrush!);
-                    fs.StrikeSize = obj.StrikeSize;
-                    fs.BorderKind = obj.BorderKind;
-                    break;
-            }
-
-            return Length;
-        }
-
-        [Flags]
-        public enum Mode
-        {
-            Fill = 1,
-            Strike = 2,
-            FillStrike = Fill | Strike,
-        }
-
-        private record struct RectF(Vector2 Start, Vector2 End, float Depth, int FillBrushIndex);
-        private record struct RectS(Vector2 Start, Vector2 End, float Depth, int StrikeBrushIndex, float StrikeSize, BorderKind BorderKind);
-        private record struct RectFS(Vector2 Start, Vector2 End, float Depth, int FillBrushIndex, int StrikeBrushIndex, float StrikeSize, BorderKind BorderKind);
-    }
-
-    public struct RectCommandArgs
-    {
-        public Vector2 Start { get; private set; }
-        public Vector2 End { get; private set; }
-        public float Depth { get; private set; }
-        public float StrikeSize { get; private set; } = 0f;
-        public BorderKind BorderKind { get; private set; } = BorderKind.Center;
-        public IBrush? FillBrush { get; private set; } = null;
-        public IBrush? StrikeBrush { get; private set; } = null;
-        public bool IsStruck => StrikeSize != 0;
-
-        public RectCommandArgs(Vector2 start, Vector2 end, float depth, IBrush fillBrush)
-        {
-            Start = start;
-            End = end;
-            Depth = depth;
-            FillBrush = fillBrush;
-        }
-
-        public RectCommandArgs(Vector2 start, Vector2 end, float depth, IBrush strikeBrush, float strikeSize, BorderKind borderKind)
-        {
-            Start = start;
-            End = end;
-            Depth = depth;
-            StrikeBrush = strikeBrush;
-            StrikeSize = strikeSize;
-            BorderKind = borderKind;
-        }
-
-        public RectCommandArgs(Vector2 start, Vector2 end, float depth, IBrush fillBrush, IBrush strikeBrush, float strikeSize,
-            BorderKind borderKind)
-        {
-            Start = start;
-            End = end;
-            Depth = depth;
-            FillBrush = fillBrush;
-            StrikeBrush = strikeBrush;
-            StrikeSize = strikeSize;
-            BorderKind = borderKind;
-        }
-    }
-}

Dashboard.Drawing/DrawCommand.cs

@@ -1,107 +0,0 @@
-using System;
-
-namespace Dashboard.Drawing
-{
-    public interface IDrawCommand
-    {
-        /// <summary>
-        /// Name of the command.
-        /// </summary>
-        string Name { get; }
-
-        /// <summary>
-        /// The draw extension that defines this command.
-        /// </summary>
-        IDrawExtension Extension { get; }
-
-        /// <summary>
-        /// The length of the command data segment, in bytes.
-        /// </summary>
-        /// <remarks>
-        /// Must be 0 for simple commands. For commands that are variadic, the
-        /// value must be less than 0. Any other positive value, otherwise.
-        /// </remarks>
-        int Length { get; }
-
-        /// <summary>
-        /// Get the parameters object for this command.
-        /// </summary>
-        /// <param name="param">The parameter array.</param>
-        /// <returns>The parameters object.</returns>
-        object? GetParams(DrawQueue queue, ReadOnlySpan<byte> param);
-
-        int WriteParams(DrawQueue queue, object? obj, Span<byte> param);
-    }
-
-    public interface IDrawCommand<T> : IDrawCommand
-    {
-        /// <summary>
-        /// Get the parameters object for this command.
-        /// </summary>
-        /// <param name="param">The parameter array.</param>
-        /// <returns>The parameters object.</returns>
-        new T? GetParams(DrawQueue queue, ReadOnlySpan<byte> param);
-
-        new int WriteParams(DrawQueue queue, T? obj, Span<byte> param);
-    }
-
-    public sealed class DrawCommand : IDrawCommand
-    {
-        public string Name { get; }
-        public IDrawExtension Extension { get; }
-        public int Length { get; } = 0;
-
-        public DrawCommand(string name, IDrawExtension extension)
-        {
-            Name = name;
-            Extension = extension;
-        }
-
-        public object? GetParams(DrawQueue queue, ReadOnlySpan<byte> param)
-        {
-            return null;
-        }
-
-        public int WriteParams(DrawQueue queue, object? obj, Span<byte> param)
-        {
-            return 0;
-        }
-    }
-
-    public sealed class DrawCommand<T> : IDrawCommand<T>
-        where T : IParameterSerializer<T>, new()
-    {
-        public string Name { get; }
-        public IDrawExtension Extension { get; }
-        public int Length { get; }
-
-        public DrawCommand(string name, IDrawExtension extension, int length)
-        {
-            Name = name;
-            Extension = extension;
-            Length = length;
-        }
-
-        public T? GetParams(DrawQueue queue, ReadOnlySpan<byte> param)
-        {
-            T t = new T();
-            t.Deserialize(queue, param);
-            return t;
-        }
-
-        public int WriteParams(DrawQueue queue, T? obj, Span<byte> param)
-        {
-            return obj!.Serialize(queue, param);
-        }
-
-        int IDrawCommand.WriteParams(DrawQueue queue, object? obj, Span<byte> param)
-        {
-            return WriteParams(queue, (T?)obj, param);
-        }
-
-        object? IDrawCommand.GetParams(DrawQueue queue, ReadOnlySpan<byte> param)
-        {
-            return GetParams(queue, param);
-        }
-    }
-}

Dashboard.Drawing/DrawExtension.cs

@@ -1,141 +0,0 @@
-using System.Collections.Generic;
-using System.Collections.Immutable;
-using System.Drawing;
-using System.Linq;
-using System.Numerics;
-using System.Runtime.InteropServices;
-
-namespace Dashboard.Drawing
-{
-    /// <summary>
-    /// Interface for all drawing extensions.
-    /// </summary>
-    public interface IDrawExtension
-    {
-        /// <summary>
-        /// Name of this extension.
-        /// </summary>
-        public string Name { get; }
-
-        public IReadOnlyList<IDrawExtension> Requires { get; }
-
-        /// <summary>
-        /// The list of commands this extension defines, if any.
-        /// </summary>
-        public IReadOnlyList<IDrawCommand> Commands { get; }
-    }
-
-    /// <summary>
-    /// A simple draw extension.
-    /// </summary>
-    public class DrawExtension : IDrawExtension
-    {
-        private readonly List<IDrawCommand> _drawCommands = new List<IDrawCommand>();
-
-        public string Name { get; }
-
-        public IReadOnlyList<IDrawCommand> Commands { get; }
-
-        public IReadOnlyList<IDrawExtension> Requires { get; }
-
-        public DrawExtension(string name, IEnumerable<IDrawExtension>? requires = null)
-        {
-            Name = name;
-            Commands = _drawCommands.AsReadOnly();
-            Requires = (requires ?? Enumerable.Empty<IDrawExtension>()).ToImmutableList();
-        }
-
-        protected void AddCommand(IDrawCommand command)
-        {
-            _drawCommands.Add(command);
-        }
-    }
-
-    public static class DrawExtensionClass
-    {
-        /// <summary>
-        /// Get the draw controller for the given queue.
-        /// </summary>
-        /// <param name="extension">The extension instance.</param>
-        /// <param name="queue">The draw queue.</param>
-        /// <returns>The draw controller for this queue.</returns>
-        public static IDrawController GetController(this IDrawExtension extension, DrawQueue queue)
-        {
-            return queue.GetController(extension);
-        }
-
-        public static void Point(this DrawQueue queue, Vector2 position, float depth, float size, IBrush brush)
-        {
-            Vector2 radius = new Vector2(0.5f * size);
-            Box2d bounds = new Box2d(position - radius, position + radius);
-
-            IDrawController controller = queue.GetController(DbBaseCommands.Instance);
-            controller.EnsureBounds(bounds, depth);
-            controller.Write(DbBaseCommands.Instance.DrawPoint, new PointCommandArgs(position, depth, size, brush));
-        }
-
-        public static void Line(this DrawQueue queue, Vector2 start, Vector2 end, float depth, float size, IBrush brush)
-        {
-            Vector2 radius = new Vector2(size / 2f);
-            Vector2 min = Vector2.Min(start, end) - radius;
-            Vector2 max = Vector2.Max(start, end) + radius;
-            Box2d bounds = new Box2d(min, max);
-
-            IDrawController controller = queue.GetController(DbBaseCommands.Instance);
-            controller.EnsureBounds(bounds, depth);
-            controller.Write(DbBaseCommands.Instance.DrawLine, new LineCommandArgs(start, end, depth, size, brush));
-        }
-
-        public static void Rect(this DrawQueue queue, Vector2 start, Vector2 end, float depth, IBrush fillBrush)
-        {
-            IDrawController controller = queue.GetController(DbBaseCommands.Instance);
-            Vector2 min = Vector2.Min(start, end);
-            Vector2 max = Vector2.Max(start, end);
-            controller.EnsureBounds(new Box2d(min, max), depth);
-            controller.Write(DbBaseCommands.Instance.DrawRectF, new RectCommandArgs(start, end, depth, fillBrush));
-        }
-
-        public static void Rect(this DrawQueue queue, Vector2 start, Vector2 end, float depth, IBrush strikeBrush, float strikeSize,
-            BorderKind kind = BorderKind.Center)
-        {
-            IDrawController controller = queue.GetController(DbBaseCommands.Instance);
-            Vector2 min = Vector2.Min(start, end);
-            Vector2 max = Vector2.Max(start, end);
-            controller.EnsureBounds(new Box2d(min, max), depth);
-            controller.Write(DbBaseCommands.Instance.DrawRectS, new RectCommandArgs(start, end, depth, strikeBrush, strikeSize, kind));
-        }
-
-        public static void Rect(this DrawQueue queue, Vector2 start, Vector2 end, float depth,  IBrush fillBrush, IBrush strikeBrush,
-            float strikeSize, BorderKind kind = BorderKind.Center)
-        {
-            IDrawController controller = queue.GetController(DbBaseCommands.Instance);
-            Vector2 min = Vector2.Min(start, end);
-            Vector2 max = Vector2.Max(start, end);
-            controller.EnsureBounds(new Box2d(min, max), depth);
-            controller.Write(DbBaseCommands.Instance.DrawRectFS, new RectCommandArgs(start, end, depth, fillBrush, strikeBrush, strikeSize, kind));
-        }
-
-        public static void Text(this DrawQueue queue, Vector3 position, IBrush brush, string text, IFont font,
-            Anchor anchor = Anchor.Left)
-        {
-            IDrawController controller = queue.GetController(DbBaseCommands.Instance);
-            SizeF size = Typesetter.MeasureString(font, text);
-            controller.EnsureBounds(new Box2d(position.X, position.Y, position.X + size.Width, position.Y + size.Height), position.Z);
-            controller.Write(TextExtension.Instance.TextCommand, new TextCommandArgs(font, brush, anchor, position, text));
-        }
-
-        public static void Text(this DrawQueue queue, Vector3 position, IBrush textBrush, IBrush borderBrush,
-            float borderRadius, string text, IFont font, Anchor anchor = Anchor.Left, BorderKind borderKind = BorderKind.Outset)
-        {
-            IDrawController controller = queue.GetController(DbBaseCommands.Instance);
-            SizeF size = Typesetter.MeasureString(font, text);
-            controller.EnsureBounds(new Box2d(position.X, position.Y, position.X + size.Width, position.Y + size.Height), position.Z);
-            controller.Write(TextExtension.Instance.TextCommand, new TextCommandArgs(font, textBrush, anchor, position, text)
-            {
-                BorderBrush = borderBrush,
-                BorderRadius = borderRadius,
-                BorderKind = borderKind,
-            });
-        }
-    }
-}

Dashboard.Drawing/DrawQueue.cs

@@ -1,368 +0,0 @@
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
-using System.IO;
-
-namespace Dashboard.Drawing
-{
-    public class DrawQueue : IEnumerable<ICommandFrame>, IDisposable
-    {
-        private readonly HashList<IDrawExtension> _extensions = new HashList<IDrawExtension>();
-        private readonly HashList<IDrawCommand> _commands = new HashList<IDrawCommand>();
-        private readonly HashList<IDrawResource> _resources = new HashList<IDrawResource>();
-        private readonly DrawController _controller;
-        private readonly MemoryStream _commandStream = new MemoryStream();
-
-        /// <summary>
-        /// The absolute boundary of all graphics objects.
-        /// </summary>
-        public Box3d Bounds { get; set; }
-
-        /// <summary>
-        /// The extensions required to draw the image.
-        /// </summary>
-        public IReadOnlyList<IDrawExtension> Extensions => _extensions;
-
-        /// <summary>
-        /// The resources used by this draw queue.
-        /// </summary>
-        public IReadOnlyList<IDrawResource> Resources => _resources;
-
-        /// <summary>
-        /// The list of commands used by the extension.
-        /// </summary>
-        public IReadOnlyList<IDrawCommand> Command => _commands;
-
-        public DrawQueue()
-        {
-            _controller = new DrawController(this);
-        }
-
-        /// <summary>
-        /// Clear the queue.
-        /// </summary>
-        public void Clear()
-        {
-            _resources.Clear();
-            _commands.Clear();
-            _extensions.Clear();
-            _commandStream.SetLength(0);
-        }
-
-        public int RequireExtension(IDrawExtension extension)
-        {
-            foreach (IDrawExtension super in extension.Requires)
-                RequireExtension(super);
-
-            return _extensions.Intern(extension);
-        }
-
-        public int RequireResource(IDrawResource resource)
-        {
-            RequireExtension(resource.Kind);
-            return _resources.Intern(resource);
-        }
-
-        internal IDrawController GetController(IDrawExtension extension)
-        {
-            _extensions.Intern(extension);
-            return _controller;
-        }
-
-        private void Write(IDrawCommand command)
-        {
-            if (command.Length > 0)
-                throw new InvalidOperationException("This command has a finite length argument.");
-
-            int cmdIndex = _commands.Intern(command);
-
-            Span<byte> cmd = stackalloc byte[6];
-            int sz;
-
-            if (command.Length == 0)
-            {
-                // Write a fixed command.
-                sz = ToVlq(cmdIndex, cmd);
-            }
-            else
-            {
-                // Write a variadic with zero length.
-                sz = ToVlq(cmdIndex, cmd);
-                cmd[sz++] = 0;
-            }
-
-            _commandStream.Write(cmd[..sz]);
-        }
-
-        private void Write(IDrawCommand command, ReadOnlySpan<byte> param)
-        {
-            if (command.Length < 0)
-            {
-                Span<byte> cmd = stackalloc byte[10];
-                int cmdIndex = _commands.Intern(command);
-                int sz = ToVlq(cmdIndex, cmd);
-                sz += ToVlq(param.Length, cmd[sz..]);
-                _commandStream.Write(cmd[..sz]);
-                _commandStream.Write(param);
-            }
-            else
-            {
-                if (command.Length != param.Length)
-                    throw new ArgumentOutOfRangeException(nameof(param.Length), "Length of the parameter does not match the command.");
-
-                Span<byte> cmd = stackalloc byte[5];
-                int cmdIndex = _commands.Intern(command);
-                int sz = ToVlq(cmdIndex, cmd);
-
-                _commandStream.Write(cmd[..sz]);
-                _commandStream.Write(param);
-            }
-        }
-
-        public Enumerator GetEnumerator() => new Enumerator(this);
-        IEnumerator<ICommandFrame> IEnumerable<ICommandFrame>.GetEnumerator() => GetEnumerator();
-        IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
-
-        private static int ToVlq(int value, Span<byte> bytes)
-        {
-            if (value < 0)
-                throw new ArgumentOutOfRangeException(nameof(value), "Must be a positive integer.");
-            else if (bytes.Length < 5)
-                throw new ArgumentOutOfRangeException(nameof(bytes), "Must at least be five bytes long.");
-
-            if (value == 0)
-            {
-                bytes[0] = 0;
-                return 1;
-            }
-
-            int i;
-            for (i = 0; i < 5 && value != 0; i++, value >>= 7)
-            {
-                if (i > 0)
-                    bytes[i - 1] |= 1 << 7;
-
-                bytes[i] = (byte)(value & 0x7F);
-            }
-
-            return i;
-        }
-
-        private static int FromVlq(ReadOnlySpan<byte> bytes, out int value)
-        {
-            value = 0;
-
-            int i;
-            for (i = 0; i < bytes.Length; i++)
-            {
-                byte b = bytes[i];
-
-                value |= (b & 0x7F) << (7*i);
-
-                if ((b & (1 << 7)) == 0)
-                {
-                    i++;
-                    break;
-                }
-            }
-
-            return i;
-        }
-
-        public void Dispose()
-        {
-            throw new NotImplementedException();
-        }
-
-        private class DrawController(DrawQueue Queue) : IDrawController
-        {
-            public void EnsureBounds(Box2d bounds, float depth)
-            {
-                Queue.Bounds = Box3d.Union(Queue.Bounds, bounds, depth);
-            }
-
-            public void Write(IDrawCommand command)
-            {
-                Queue.Write(command);
-            }
-
-            public void Write(IDrawCommand command, ReadOnlySpan<byte> bytes)
-            {
-                Queue.Write(command, bytes);
-            }
-
-            public void Write<T>(IDrawCommand command, T param) where T : IParameterSerializer<T>
-            {
-                int length = param.Serialize(Queue, Span<byte>.Empty);
-                Span<byte> bytes = stackalloc byte[length];
-
-                param.Serialize(Queue, bytes);
-                Write(command, bytes);
-            }
-
-            public void Write<T1, T2>(T2 command, T1 param) where T2 : IDrawCommand<T1>
-            {
-                int length = command.WriteParams(Queue, param, Span<byte>.Empty);
-                Span<byte> bytes = stackalloc byte[length];
-
-                command.WriteParams(Queue, param, bytes);
-                Write(command, bytes);
-            }
-        }
-
-        public class Enumerator : ICommandFrame, IEnumerator<ICommandFrame>
-        {
-            private readonly DrawQueue _queue;
-            private readonly byte[] _stream;
-            private int _length;
-            private int _index = -1;
-            private int _paramsIndex = -1;
-            private int _paramLength = 0;
-            private IDrawCommand? _current = null;
-
-            public ICommandFrame Current => this;
-
-            object? IEnumerator.Current => Current;
-
-            public IDrawCommand Command => _current ?? throw new InvalidOperationException();
-
-            public bool HasParameters { get; private set; }
-
-            public Enumerator(DrawQueue queue)
-            {
-                _queue = queue;
-                _stream = queue._commandStream.GetBuffer();
-                _length = (int)queue._commandStream.Length;
-            }
-
-            public bool MoveNext()
-            {
-                if (_index == -1)
-                    _index = 0;
-
-                if (_index >= _length)
-                    return false;
-
-
-                _index += FromVlq(_stream[_index .. (_index + 5)], out int command);
-                _current = _queue.Command[command];
-
-                HasParameters = _current.Length != 0;
-
-                if (!HasParameters)
-                {
-                    _paramsIndex = -1;
-                    return true;
-                }
-
-                int length;
-                if (_current.Length < 0)
-                {
-                    _index += FromVlq(_stream[_index .. (_index + 5)], out length);
-                }
-                else
-                {
-                    length = _current.Length;
-                }
-
-                _paramsIndex = _index;
-                _paramLength = length;
-                _index += length;
-
-                return true;
-            }
-
-            public void Reset()
-            {
-                _index = -1;
-                _current = null;
-            }
-
-            public object? GetParameter()
-            {
-                return _current?.GetParams(_queue, _stream.AsSpan(_paramsIndex, _paramLength));
-            }
-
-            public T GetParameter<T>()
-            {
-                if (_current is IDrawCommand<T> command)
-                {
-                    return command.GetParams(_queue, _stream.AsSpan(_paramsIndex, _paramLength))!;
-                }
-                else
-                {
-                    throw new InvalidOperationException();
-                }
-            }
-
-            public bool TryGetParameter<T>([NotNullWhen(true)] out T? parameter)
-            {
-                if (_current is IDrawCommand<T> command)
-                {
-                    parameter = command.GetParams(_queue, _stream.AsSpan(_paramsIndex, _paramLength))!;
-                    return true;
-                }
-                else
-                {
-                    parameter = default;
-                    return false;
-                }
-            }
-
-            public void Dispose()
-            {
-            }
-        }
-    }
-
-    public interface ICommandFrame
-    {
-        public IDrawCommand Command { get; }
-
-        public bool HasParameters { get; }
-
-        public object? GetParameter();
-
-        public T GetParameter<T>();
-
-        public bool TryGetParameter<T>([NotNullWhen(true)] out T? parameter);
-    }
-
-
-    public interface IDrawController
-    {
-        /// <summary>
-        /// Ensures that the canvas is at least a certain size.
-        /// </summary>
-        /// <param name="bounds">The bounding box.</param>
-        void EnsureBounds(Box2d bounds, float depth);
-
-        /// <summary>
-        /// Write into the command stream.
-        /// </summary>
-        /// <param name="command">The command to write.</param>
-        void Write(IDrawCommand command);
-
-        /// <summary>
-        /// Write into the command stream.
-        /// </summary>
-        /// <param name="command">The command to write.</param>
-        /// <param name="param">Any data associated with the command.</param>
-        void Write(IDrawCommand command, ReadOnlySpan<byte> param);
-
-        /// <summary>
-        /// Write into the command stream.
-        /// </summary>
-        /// <param name="command">The command to write.</param>
-        /// <param name="param">Any data associated with the command.</param>
-        void Write<T>(IDrawCommand command, T param) where T : IParameterSerializer<T>;
-
-        /// <summary>
-        /// Write into the command stream.
-        /// </summary>
-        /// <param name="command">The command to write.</param>
-        /// <param name="param">Any data associated with the command.</param>
-        void Write<T1, T2>(T2 command, T1 param) where T2 : IDrawCommand<T1>;
-    }
-}

Dashboard.Drawing/Font.cs

@@ -1,52 +0,0 @@
-using System.Linq;
-
-namespace Dashboard.Drawing
-{
-    public class FontExtension : DrawExtension
-    {
-        private FontExtension() : base("DB_Font", Enumerable.Empty<DrawExtension>())
-        {
-        }
-
-        public static readonly IDrawExtension Instance = new FontExtension();
-    }
-
-    public interface IFont : IDrawResource
-    {
-        public string Family { get; }
-        public float Size { get; }
-        public FontWeight Weight { get; }
-        public FontSlant Slant { get; }
-        public FontStretch Stretch { get; }
-    }
-
-    public struct NamedFont : IFont
-    {
-        public IDrawExtension Kind { get; } = Instance;
-
-        public string Family { get; }
-        public float Size { get; }
-        public FontWeight Weight { get; }
-        public FontSlant Slant { get; }
-        public FontStretch Stretch { get; }
-
-        public NamedFont(string family, float size, FontWeight weight = FontWeight.Normal,
-            FontSlant slant = FontSlant.Normal, FontStretch stretch = FontStretch.Normal)
-        {
-            Family = family;
-            Size = size;
-            Weight = weight;
-            Slant = slant;
-            Stretch = Stretch;
-        }
-
-        private static readonly IDrawExtension Instance = new Extension();
-
-        private class Extension : DrawExtension
-        {
-            public Extension() : base("DB_Font_Named", [FontExtension.Instance])
-            {
-            }
-        }
-    }
-}

Dashboard.Drawing/IDrawQueuePaintable.cs

@@ -1,9 +0,0 @@
-using Dashboard.Windowing;
-
-namespace Dashboard.Drawing
-{
-    public interface IDrawQueuePaintable : IPaintable
-    {
-        DrawQueue DrawQueue { get; }
-    }
-}

Dashboard.Drawing/IDrawResource.cs

@@ -1,13 +0,0 @@
-namespace Dashboard.Drawing
-{
-    /// <summary>
-    /// Interface for draw resources.
-    /// </summary>
-    public interface IDrawResource
-    {
-        /// <summary>
-        /// The extension for this kind of resource.
-        /// </summary>
-        IDrawExtension Kind { get; }
-    }
-}

Dashboard.Drawing/IParameterSerializer.cs

@@ -1,14 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Dashboard.Drawing
-{
-    public interface IParameterSerializer<T>
-    { 
-        int Serialize(DrawQueue queue, Span<byte> bytes);
-        void Deserialize(DrawQueue queue, ReadOnlySpan<byte> bytes);
-    }
-}

Dashboard.Drawing/TextExtension.cs

@@ -1,140 +0,0 @@
-using System;
-using System.Numerics;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-
-namespace Dashboard.Drawing
-{
-    public class TextExtension : DrawExtension
-    {
-        public TextCommand TextCommand { get; }
-
-        private TextExtension() : base("DB_Text", new [] { FontExtension.Instance, BrushExtension.Instance })
-        {
-            TextCommand = new TextCommand(this);
-        }
-
-        public static readonly TextExtension Instance = new TextExtension();
-    }
-
-    public class TextCommand : IDrawCommand<TextCommandArgs>
-    {
-        public string Name { get; } = "Text";
-        public IDrawExtension Extension { get; }
-        public int Length { get; } = -1;
-
-        public TextCommand(TextExtension ext)
-        {
-            Extension = ext;
-        }
-
-        public int WriteParams(DrawQueue queue, TextCommandArgs obj, Span<byte> param)
-        {
-            int size = Unsafe.SizeOf<Header>() + obj.Text.Length * sizeof(char) + sizeof(char);
-
-            if (param.Length < size)
-                return size;
-
-            ref Header header = ref MemoryMarshal.Cast<byte, Header>(param[0..Unsafe.SizeOf<Header>()])[0];
-            Span<char> text = MemoryMarshal.Cast<byte, char>(param[Unsafe.SizeOf<Header>()..]);
-
-            header = new Header()
-            {
-                Font = queue.RequireResource(obj.Font),
-                TextBrush = queue.RequireResource(obj.TextBrush),
-                BorderBrush = (obj.BorderBrush != null) ? queue.RequireResource(obj.BorderBrush) : -1,
-                BorderRadius = (obj.BorderBrush != null) ? obj.BorderRadius : 0f,
-                Anchor = obj.Anchor,
-                Position = obj.Position,
-                BorderKind = obj.BorderKind,
-            };
-            obj.Text.CopyTo(text);
-
-            return size;
-        }
-
-        public TextCommandArgs GetParams(DrawQueue queue, ReadOnlySpan<byte> param)
-        {
-            Header header = MemoryMarshal.Cast<byte, Header>(param[0..Unsafe.SizeOf<Header>()])[0];
-            ReadOnlySpan<char> text = MemoryMarshal.Cast<byte, char>(param[Unsafe.SizeOf<Header>()..]);
-
-            if (header.BorderBrush != -1 && header.BorderRadius != 0)
-            {
-                return new TextCommandArgs(
-                    (IFont)queue.Resources[header.Font],
-                    (IBrush)queue.Resources[header.TextBrush],
-                    header.Anchor,
-                    header.Position,
-                    text.ToString())
-                {
-                    BorderBrush = (IBrush)queue.Resources[header.BorderBrush],
-                    BorderRadius = header.BorderRadius,
-                    BorderKind = header.BorderKind,
-                };
-            }
-            else
-            {
-                return new TextCommandArgs(
-                    (IFont)queue.Resources[header.Font],
-                    (IBrush)queue.Resources[header.TextBrush],
-                    header.Anchor,
-                    header.Position,
-                    text.ToString());
-            }
-        }
-
-        int IDrawCommand.WriteParams(DrawQueue queue, object? obj, Span<byte> param)
-        {
-            return WriteParams(queue, (TextCommandArgs)obj!, param);
-        }
-
-        object? IDrawCommand.GetParams(DrawQueue queue, ReadOnlySpan<byte> param)
-        {
-            return GetParams(queue, param);
-        }
-
-        private struct Header
-        {
-            private int _flags;
-            public int Font;
-            public int TextBrush;
-            public int BorderBrush;
-            public Vector3 Position;
-            public float BorderRadius;
-
-            public Anchor Anchor
-            {
-                get => (Anchor)(_flags & 0xF);
-                set => _flags = (_flags & ~0xF) | (int)value;
-            }
-
-            public BorderKind BorderKind
-            {
-                get => (_flags & INSET) switch
-                {
-                    OUTSET => BorderKind.Outset,
-                    INSET => BorderKind.Inset,
-                    _ => BorderKind.Center,
-                };
-                set => _flags = value switch
-                {
-                    BorderKind.Outset => (_flags & ~INSET) | OUTSET,
-                    BorderKind.Inset => (_flags & ~INSET) | INSET,
-                    _ => (_flags & ~INSET) | CENTER,
-                };
-            }
-
-            private const int INSET  = 0x30;
-            private const int CENTER = 0x00;
-            private const int OUTSET = 0x10;
-        }
-    }
-
-    public record struct TextCommandArgs(IFont Font, IBrush TextBrush, Anchor Anchor, Vector3 Position, string Text)
-    {
-        public IBrush? BorderBrush { get; init; } = null;
-        public float BorderRadius { get; init; } = 0;
-
-        public BorderKind BorderKind { get; init; } = BorderKind.Center;
-    }
-}

Dashboard.Drawing/Typesetter.cs

@@ -1,104 +0,0 @@
-using System;
-using System.Diagnostics.CodeAnalysis;
-using System.Drawing;
-using System.IO;
-using System.Reflection.PortableExecutable;
-
-namespace Dashboard.Drawing
-{
-    /// <summary>
-    /// Interface for registered typesetters.
-    /// </summary>
-    public interface ITypeSetter
-    {
-        /// <summary>
-        /// Name of the typesetter.
-        /// </summary>
-        string Name { get; }
-
-        SizeF MeasureString(IFont font, string value);
-
-        IFont LoadFont(Stream stream);
-        IFont LoadFont(string path);
-        IFont LoadFont(NamedFont font);
-    }
-
-    /// <summary>
-    /// Class for typesetting related functions.
-    /// </summary>
-    public static class Typesetter
-    {
-        /// <summary>
-        /// The typesetting backend for this instance.
-        /// </summary>
-        public static ITypeSetter Backend { get; set; } = new UndefinedTypeSetter();
-
-        public static string Name => Backend.Name;
-
-        public static SizeF MeasureString(IFont font, string value)
-        {
-            return Backend.MeasureString(font, value);
-        }
-
-        public static IFont LoadFont(Stream stream)
-        {
-            return Backend.LoadFont(stream);
-        }
-
-        public static IFont LoadFont(string path)
-        {
-            return Backend.LoadFont(path);
-        }
-
-        public static IFont LoadFont(FileInfo file)
-        {
-            return Backend.LoadFont(file.FullName);
-        }
-
-        public static IFont LoadFont(NamedFont font)
-        {
-            return Backend.LoadFont(font);
-        }
-
-        public static IFont LoadFont(string family, float size, FontWeight weight = FontWeight.Normal,
-            FontSlant slant = FontSlant.Normal, FontStretch stretch = FontStretch.Normal)
-        {
-            return LoadFont(new NamedFont(family, size, weight, slant, stretch));
-        }
-
-        private class UndefinedTypeSetter : ITypeSetter
-        {
-            public string Name { get; } = "Undefined";
-
-            [DoesNotReturn]
-            private void Except()
-            {
-                throw new InvalidOperationException("No typesetting backend is loaded.");
-            }
-
-            public SizeF MeasureString(IFont font, string value)
-            {
-                Except();
-                return default;
-            }
-
-            public IFont LoadFont(Stream stream)
-            {
-                Except();
-                return default;
-            }
-
-            public IFont LoadFont(string path)
-            {
-                Except();
-                return default;
-            }
-
-            public IFont LoadFont(NamedFont font)
-            {
-                Except();
-                return default;
-            }
-        }
-    }
-}

Dashboard.ImmediateUI/Dashboard.ImmediateUI.csproj

@@ -1,13 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-    <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
-        <ImplicitUsings>disable</ImplicitUsings>
-        <Nullable>enable</Nullable>
-    </PropertyGroup>
-
-    <ItemGroup>
-      <ProjectReference Include="..\Dashboard.Drawing\Dashboard.Drawing.csproj" />
-    </ItemGroup>
-
-</Project>

Dashboard.ImmediateUI/DimUI.cs

@@ -1,234 +0,0 @@
-using System;
-using System.Diagnostics.CodeAnalysis;
-using System.Drawing;
-using System.Numerics;
-using System.Text;
-using Dashboard.Drawing;
-
-namespace Dashboard.ImmediateUI
-{
-    public class DimUIConfig
-    {
-        public Vector2 Margin = new Vector2(8, 4);
-        public Vector2 Padding = new Vector2(4);
-        public required IFont Font { get; init; }
-
-        public IBrush TextBrush = new SolidBrush(Color.Black);
-        public IBrush DisabledText = new SolidBrush(Color.Gray);
-
-        public float ButtonBorderSize = 2f;
-        public IBrush ButtonBorderBrush = new SolidBrush(Color.SteelBlue);
-        public IBrush ButtonFillBrush = new SolidBrush(Color.SlateGray);
-        public IBrush? ButtonShadowBrush = new SolidBrush(Color.FromArgb(32, Color.LightSteelBlue));
-        public float ButtonShadowOffset = 2f;
-
-        public float InputBorderSize = 2f;
-        public IBrush InputPlaceholderTextBrush = new SolidBrush(Color.SteelBlue);
-        public IBrush InputBorderBrush = new SolidBrush(Color.SlateGray);
-        public IBrush InputFillBrush = new SolidBrush(Color.LightGray);
-        public IBrush? InputShadowBrush = new SolidBrush(Color.FromArgb(32, Color.LightSteelBlue));
-        public float InputShadowOffset = -2f;
-
-        public float MenuBorderSize = 2f;
-        public IBrush MenuBorderBrush = new SolidBrush(Color.SteelBlue);
-        public IBrush MenuFillBrush = new SolidBrush(Color.SlateGray);
-        public IBrush? MenuShadowBrush = new SolidBrush(Color.FromArgb(32, Color.LightSteelBlue));
-        public float MenuShadowOffset = 2f;
-    }
-
-    public class DimUI
-    {
-        private readonly DimUIConfig _config;
-        private Vector2 _pen;
-        private Box2d _bounds;
-        private bool _firstLine = false;
-        private bool _sameLine = false;
-        private float _z = -1;
-        private float _lineHeight;
-        private DrawQueue _queue;
-
-        public DimUI(DimUIConfig config)
-        {
-            _config = config;
-        }
-
-        [MemberNotNull(nameof(_queue))]
-        public void Begin(Box2d bounds, DrawQueue queue)
-        {
-            _bounds = bounds;
-            _pen = _bounds.Min;
-            _queue = queue;
-            _firstLine = true;
-            _lineHeight = 0;
-            _z = -1;
-        }
-
-        public void SameLine()
-        {
-            _sameLine = true;
-        }
-
-        private void Line()
-        {
-            if (!_firstLine && !_sameLine)
-            {
-                _pen = new Vector2(_bounds.Left, _pen.Y + _lineHeight);
-            }
-            else
-            {
-                _firstLine = false;
-                _sameLine = false;
-            }
-
-            _pen.X += _config.Margin.X;
-            _lineHeight = 0;
-        }
-
-        private float Z()
-        {
-            return _z += 0.001f;
-        }
-
-        public void Text(string text)
-        {
-            Line();
-
-            SizeF sz = Typesetter.MeasureString(_config.Font, text);
-            float z = Z();
-            float h = _config.Margin.Y * 2 + sz.Height;
-            _queue.Text(new Vector3(_pen + new Vector2(0, _config.Margin.X), z), _config.TextBrush, text, _config.Font);
-
-            _lineHeight = Math.Max(_lineHeight, h);
-            _pen.X += sz.Width;
-        }
-
-        public void DrawBox(
-            Vector2 position,
-            Vector2 size,
-            IBrush fill,
-            IBrush border, float borderWidth,
-            IBrush? shadow, float offset)
-        {
-            float z = Z();
-
-            if (shadow != null)
-            {
-                if (offset >= 0)
-                {
-                    _queue.Rect(position + new Vector2(offset), position + size + new Vector2(offset + borderWidth), z, shadow);
-                }
-                else
-                {
-                    // Inset shadows are draw a bit weirdly.
-                    _queue.Rect(position, position + new Vector2(offset, size.Y), z, shadow);
-                    _queue.Rect(position + new Vector2(offset, 0), position + new Vector2(size.X - offset, offset), z, shadow);
-                }
-            }
-
-            _queue.Rect(position, position + size, z, fill, border, borderWidth, BorderKind.Outset);
-        }
-
-        public bool Button(string label)
-        {
-            Line();
-
-            SizeF sz = Typesetter.MeasureString(_config.Font, label);
-
-            float h = _config.Margin.Y * 2 + _config.Padding.Y * 2 + sz.Height;
-            DrawBox(
-                _pen + new Vector2(0, _config.Margin.Y),
-                new Vector2(sz.Width + 2 * _config.Padding.X, sz.Height + 2 * _config.Padding.Y),
-                _config.ButtonFillBrush,
-                _config.ButtonBorderBrush,
-                _config.ButtonBorderSize,
-                _config.ButtonShadowBrush,
-                _config.ButtonShadowOffset);
-
-            float z = Z();
-
-            _queue.Text(new Vector3(_pen + new Vector2(_config.Padding.X, _config.Margin.Y + _config.Padding.Y), z),
-                _config.TextBrush, label, _config.Font);
-            _lineHeight = Math.Max(_lineHeight, h);
-
-            _pen.X += sz.Width + 2 * _config.Padding.X;
-            return false;
-        }
-
-        public bool Input(string placeholder, StringBuilder value)
-        {
-            Line();
-
-            IBrush textBrush;
-            string str;
-            if (value.Length == 0)
-            {
-                textBrush = _config.DisabledText;
-                str = placeholder;
-            }
-            else
-            {
-                textBrush = _config.TextBrush;
-                str = value.ToString();
-            }
-
-            SizeF sz = Typesetter.MeasureString(_config.Font, str);
-
-            float h = _config.Margin.Y * 2 + _config.Padding.Y * 2 + sz.Height;
-            DrawBox(
-                _pen + new Vector2(0, _config.Margin.Y),
-                new Vector2(sz.Width + 2 * _config.Padding.X, sz.Height + 2 * _config.Padding.Y),
-                _config.InputFillBrush,
-                _config.InputBorderBrush,
-                _config.InputBorderSize,
-                _config.InputShadowBrush,
-                _config.InputShadowOffset);
-
-            float z = Z();
-
-            _queue.Text(new Vector3(_pen + new Vector2(_config.Padding.X, _config.Margin.Y + _config.Padding.Y), z),
-                textBrush, str, _config.Font);
-            _lineHeight = Math.Max(_lineHeight, h);
-
-            _pen.X += sz.Width + 2 * _config.Padding.X;
-            return false;
-        }
-
-        public void BeginMenu()
-        {
-
-        }
-
-        public bool MenuItem(string name)
-        {
-            return false;
-        }
-
-        public void EndMenu()
-        {
-
-        }
-
-        public int Id(ReadOnlySpan<char> str)
-        {
-            // Uses the FVN-1A algorithm in 32-bit mode.
-            const int PRIME = 0x01000193;
-            const int BASIS = unchecked((int)0x811c9dc5);
-
-            int hash = BASIS;
-            for (int i = 0; i < str.Length; i++)
-            {
-                hash ^= str[i] & 0xFF;
-                hash *= PRIME;
-                hash ^= str[i] >> 8;
-                hash *= PRIME;
-            }
-
-            return hash;
-        }
-
-        public void Finish()
-        {
-            // TODO:
-        }
-    }
-}

Dashboard.OpenGL/ContextCollector.cs

@@ -1,7 +1,7 @@
 using System.Collections.Concurrent;
 using OpenTK.Graphics.OpenGL;
 
-namespace Dashboard.Drawing.OpenGL
+namespace Dashboard.OpenGL
 {
     public class ContextCollector : IDisposable
     {

Dashboard.OpenGL/Dashboard.OpenGL.csproj

@@ -1,13 +1,22 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net10.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
+        <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     </PropertyGroup>
 
     <ItemGroup>
+      <PackageReference Include="OpenTK.Graphics" Version="[5.0.0-pre.*,5.1)" />
       <ProjectReference Include="..\Dashboard.Common\Dashboard.Common.csproj" />
     </ItemGroup>
 
+    <ItemGroup>
+      <None Remove="Drawing\immediate.frag" />
+      <EmbeddedResource Include="Drawing\immediate.frag" />
+      <None Remove="Drawing\immediate.vert" />
+      <EmbeddedResource Include="Drawing\immediate.vert" />
+    </ItemGroup>
+
 </Project>

Dashboard.OpenGL/Drawing/DeviceContextBase.cs

@@ -0,0 +1,167 @@
+using System.Drawing;
+using System.Numerics;
+using Dashboard.Drawing;
+using Dashboard.Pal;
+using Dashboard.Windowing;
+using OpenTK.Graphics.OpenGL;
+using OpenTK.Graphics.Wgl;
+using OpenTK.Mathematics;
+using ColorBuffer = OpenTK.Graphics.OpenGL.ColorBuffer;
+using Vector2 = System.Numerics.Vector2;
+
+namespace Dashboard.OpenGL.Drawing
+{
+    public class DeviceContextBase : IDeviceContextBase
+    {
+        private readonly Stack<Matrix4x4> _transforms = new Stack<Matrix4x4>();
+        private readonly Stack<Box2d> _clipRegions = new Stack<Box2d>();
+        private readonly Stack<Box2d> _scissorRegions = new Stack<Box2d>();
+        private int _z = 0;
+
+        public DeviceContext Context { get; private set; } = null!;
+        IContextBase IContextExtensionBase.Context => Context;
+        public string DriverName => "Dashboard OpenGL Device Context";
+        public string DriverVendor => "Dashboard";
+        public Version DriverVersion => new Version(0, 1);
+
+        public Box2d ClipRegion => _clipRegions.Peek();
+        public Box2d ScissorRegion => _scissorRegions.Peek();
+        public Matrix4x4 Transforms => _transforms.Peek();
+        public float Scale => ScaleOverride > 0 ? ScaleOverride : (Context.Window as IDpiAwareWindow)?.Scale ?? 1;
+        public float ScaleOverride { get; set; } = -1f;
+
+
+        public void Dispose()
+        {
+        }
+
+
+        public void Require(DeviceContext context)
+        {
+            Context = context;
+
+            ResetClip();
+            ResetScissor();
+            ResetTransforms();
+        }
+
+
+        void IContextExtensionBase.Require(IContextBase context) => Require((DeviceContext)context);
+
+        public void ResetClip()
+        {
+            _clipRegions.Clear();
+
+            Vector2 size = ((GLDeviceContext)Context).GLContext.FramebufferSize;
+            _clipRegions.Push(new Box2d(Vector2.Zero, size));
+
+            SetClip(ClipRegion);
+        }
+
+        public void PushClip(Box2d clipRegion)
+        {
+            clipRegion = new Box2d(ClipRegion.Min.X + clipRegion.Min.X, ClipRegion.Min.Y + clipRegion.Min.Y,
+                Math.Min(ClipRegion.Max.X, ClipRegion.Min.X + clipRegion.Max.X),
+                Math.Min(ClipRegion.Max.Y, ClipRegion.Max.Y + clipRegion.Max.Y));
+            _clipRegions.Push(clipRegion);
+
+            SetClip(clipRegion);
+        }
+
+        public void PopClip()
+        {
+            _clipRegions.Pop();
+            SetClip(ClipRegion);
+        }
+
+        public void ResetScissor()
+        {
+            GL.Disable(EnableCap.ScissorTest);
+            _scissorRegions.Clear();
+            Vector2 size = ((GLDeviceContext)Context).GLContext.FramebufferSize;
+            _scissorRegions.Push(new Box2d(Vector2.Zero, size));
+        }
+
+        public void PushScissor(Box2d scissorRegion)
+        {
+            GL.Enable(EnableCap.ScissorTest);
+
+            // scissorRegion = new RectangleF(scissorRegion.X + scissorRegion.X, scissorRegion.Y + scissorRegion.Y,
+            //     Math.Min(ScissorRegion.Right - scissorRegion.X, scissorRegion.Width),
+            //     Math.Min(ScissorRegion.Bottom - scissorRegion.Y, scissorRegion.Height));
+            _scissorRegions.Push(scissorRegion);
+
+            SetScissor(scissorRegion);
+        }
+
+        public void PopScissor()
+        {
+            if (_scissorRegions.Count == 1)
+                GL.Disable(EnableCap.ScissorTest);
+
+            _scissorRegions.Pop();
+            SetScissor(ClipRegion);
+        }
+
+        private void SetClip(Box2d rect)
+        {
+            Vector2 size = ((GLDeviceContext)Context).GLContext.FramebufferSize;
+            GL.Viewport(
+                (int)Math.Round(rect.Min.X),
+                (int)Math.Round(size.Y - rect.Min.Y - rect.Size.Y),
+                (int)Math.Round(rect.Size.X),
+                (int)Math.Round(rect.Size.Y));
+        }
+
+        void SetScissor(Box2d rect)
+        {
+            Vector2 size = ((GLDeviceContext)Context).GLContext.FramebufferSize;
+            GL.Scissor(
+                (int)Math.Round(rect.Min.X),
+                (int)Math.Round(size.Y - rect.Min.Y - rect.Size.Y),
+                (int)Math.Round(rect.Size.X),
+                (int)Math.Round(rect.Size.Y));
+        }
+
+        public void ResetTransforms()
+        {
+            Vector2 size = ((GLDeviceContext)Context).GLContext.FramebufferSize;
+            Matrix4x4 m  = Matrix4x4.CreateOrthographicOffCenterLeftHanded(0, size.X, size.Y, 0, 1, -1);
+
+            _transforms.Clear();
+            _transforms.Push(m);
+        }
+
+        public void PushTransforms(in Matrix4x4 matrix)
+        {
+            Matrix4x4 result = matrix * Transforms;
+            _transforms.Push(result);
+        }
+
+        public void PopTransforms()
+        {
+            _transforms.Pop();
+        }
+
+        public void ClearColor(Color color)
+        {
+            GL.ClearColor(color.R / 255f, color.G / 255f, color.B / 255f, color.A / 255f);
+            GL.Clear(ClearBufferMask.ColorBufferBit);
+        }
+
+        public void ClearDepth()
+        {
+            GL.Clear(ClearBufferMask.DepthBufferBit);
+        }
+
+        public int IncrementZ()
+        {
+            return ++_z;
+        }
+
+        public int DecrementZ()
+        {
+            return --_z;
+        }
+    }
+}

Dashboard.OpenGL/Drawing/DirectRendering.cs

@@ -0,0 +1,113 @@
+using System.Drawing;
+using System.Numerics;
+using Dashboard.Drawing;
+using Dashboard.Pal;
+using OpenTK.Graphics.OpenGL;
+
+namespace Dashboard.OpenGL.Drawing
+{
+    public class DirectRendering : IDirectRendering, ITextureExtension
+    {
+        public GLDeviceContext Context { get; private set; } = null!;
+        public string DriverName { get; } = "Dashboard OpenGL";
+        public string DriverVendor { get; } = "Dashboard";
+        public Version DriverVersion { get; } = new Version(0, 1);
+        IContextBase IContextExtensionBase.Context => Context;
+        DeviceContext IContextExtensionBase<DeviceContext>.Context => Context;
+
+        public bool SupportsArbTextureStorage { get; private set; }
+        public bool SupportsAnisotropy { get; private set; }
+
+        private int _vao = -1;
+        private List<GLTexture> _textures = new List<GLTexture>();
+
+
+        public void Dispose()
+        {
+            GC.SuppressFinalize(this);
+        }
+
+        public void Require(DeviceContext context)
+        {
+            Context = (GLDeviceContext)context;
+
+            SupportsArbTextureStorage = Context.DriverVersion >= new Version(4, 2) ||
+                                        Context.IsGLExtensionAvailable("GL_ARB_texture_storage");
+            SupportsAnisotropy = Context.DriverVersion >= new Version() ||
+                                 Context.IsGLExtensionAvailable("GL_EXT_texture_filter_anisotropic") ||
+                                 Context.IsGLExtensionAvailable("GL_ARB_texture_filter_anisotropic");
+        } 
+
+        public void Require(IContextBase context) => Require((DeviceContext)context);
+
+        public void Begin()
+        {
+            if (_vao == -1)
+            {
+                GL.GenVertexArray(out _vao);
+            }
+        }
+
+        public void End()
+        {
+
+        }
+
+        public IShader CreateShader<T>(T createInfo) where T : IShaderCreateInfo
+        {
+            int program = createInfo switch
+            {
+                GlslShaderCreateInfo glsl => glsl.CreateProgram(),
+                GlslComputeShaderCreateInfo compute => compute.CreateProgram(),
+                SpirvShaderCreateInfo spirv => spirv.CreateProgram(),
+                _ => throw new Exception($"Unsupported shader pipeline type {createInfo.GetType()}."),
+            };
+
+            return new GLShader((GLDeviceContext)Context, program);
+        }
+
+        public IBuffer CreateBuffer(BufferAccessPattern pattern, long size)
+        {
+            return GLBuffer.Create((GLDeviceContext)Context, pattern, size);
+        }
+
+        public void Draw(DrawCall drawCall)
+        {
+            Vector2 size = Context.FramebufferSize;
+            drawCall.SetAll(size, _vao, false);
+
+            if (drawCall.VertexSpecification.ElementBuffer is null)
+            {
+                GL.DrawArrays(drawCall.Primitive.OpenGL, drawCall.First, drawCall.Count);
+            }
+            else if (drawCall.BaseVertex == 0)
+            {
+                GL.DrawElements(drawCall.Primitive.OpenGL, drawCall.Count, drawCall.IndexType.OpenGL, (nint)drawCall.Offset);
+            }
+            else
+            {
+                GL.DrawElementsBaseVertex(drawCall.Primitive.OpenGL, drawCall.Count, drawCall.IndexType.OpenGL, (nint)drawCall.Offset, drawCall.BaseVertex);
+
+            }
+        }
+
+        public GLTexture CreateTexture(TextureType type)
+        {
+            GLTexture texture = new GLTexture(this, type);
+            lock (_textures) _textures.Add(texture);
+            return texture;
+        }
+
+        internal void TextureDisposed(GLTexture texture)
+        {
+            lock (_textures) _textures.Remove(texture);
+        }
+
+        ITexture ITextureExtension.CreateTexture(TextureType type) => CreateTexture(type);
+
+        ITexture IDirectRendering.CreateTexture(TextureType type)
+        {
+            return CreateTexture(type);
+        }
+    }
+}

Dashboard.OpenGL/Drawing/GLShader.cs

@@ -0,0 +1,137 @@
+using System.Collections.Immutable;
+using System.Security.Cryptography.X509Certificates;
+using Dashboard.Drawing;
+using OpenTK.Graphics.OpenGL;
+
+namespace Dashboard.OpenGL.Drawing
+{
+    public class GLShader : IShader
+    {
+        public GLDeviceContext Context { get; }
+        public int Handle { get; }
+
+        public ImmutableList<ShaderMappingProperty> Attributes { get; }
+
+        public ImmutableList<ShaderMappingProperty> Uniforms { get; }
+
+        public ImmutableList<ShaderMappingProperty> Blocks { get; }
+
+        public ImmutableList<ShaderMappingProperty> Textures { get; }
+
+        public GLShader(GLDeviceContext context, int handle)
+        {
+            Context = context;
+            Handle = handle;
+
+            List<ShaderMappingProperty> list = new List<ShaderMappingProperty>();
+            List<ShaderMappingProperty> list2 = new List<ShaderMappingProperty>();
+
+            int count = GL.GetProgrami(handle, ProgramProperty.ActiveAttributes);
+            for (int i = 0; i < count; i++)
+            {
+                list.Add(GetAttribute(handle, i));
+            }
+            Attributes = list.ToImmutableList();
+
+            list.Clear();
+            count = GL.GetProgrami(handle, ProgramProperty.ActiveUniforms);
+            for (int i = 0; i < count; i++)
+            {
+                var property = GetUniform(handle, i, out bool isSampler);
+                list.Add(property);
+                if (isSampler)
+                    list2.Add(property);
+            }
+            Uniforms = list.ToImmutableList();
+            Textures = list2.ToImmutableList();
+
+            list.Clear();
+            count = GL.GetProgrami(handle, ProgramProperty.ActiveUniformBlocks);
+            for (int i = 0; i < count; i++)
+            {
+                var property = GetBlock(handle, i);
+                list.Add(property);
+            }
+            Blocks = list.ToImmutableList();
+        }
+
+        private static ShaderMappingProperty GetAttribute(int program, int index)
+        {
+            string name = GL.GetActiveAttrib(program, (uint)index, 260, out _, out _, out _);
+            int location = GL.GetAttribLocation(program, name);
+
+            return new ShaderMappingProperty(name, location);
+        }
+
+        private static ShaderMappingProperty GetUniform(int program, int index, out bool isSampler)
+        {
+            string name = GL.GetActiveUniform(program, (uint)index, 260, out _,  out _, out OpenTK.Graphics.OpenGL.UniformType type);
+            int location = GL.GetUniformLocation(program, name);
+
+            isSampler = type switch
+            {
+                OpenTK.Graphics.OpenGL.UniformType.Sampler1D or 
+                OpenTK.Graphics.OpenGL.UniformType.Sampler1DArray or
+                OpenTK.Graphics.OpenGL.UniformType.Sampler1DShadow or
+                OpenTK.Graphics.OpenGL.UniformType.Sampler1DArrayShadow or
+                OpenTK.Graphics.OpenGL.UniformType.IntSampler1D or
+                OpenTK.Graphics.OpenGL.UniformType.IntSampler1DArray or
+                OpenTK.Graphics.OpenGL.UniformType.UnsignedIntSampler1D or
+                OpenTK.Graphics.OpenGL.UniformType.UnsignedIntSampler1DArray or
+                
+                OpenTK.Graphics.OpenGL.UniformType.Sampler2D or
+                OpenTK.Graphics.OpenGL.UniformType.Sampler2DShadow or
+                OpenTK.Graphics.OpenGL.UniformType.Sampler2DRect or
+                OpenTK.Graphics.OpenGL.UniformType.Sampler2DRectShadow or
+                OpenTK.Graphics.OpenGL.UniformType.Sampler2DArray or
+                OpenTK.Graphics.OpenGL.UniformType.Sampler2DArrayShadow or
+                OpenTK.Graphics.OpenGL.UniformType.Sampler2DMultisample or
+                OpenTK.Graphics.OpenGL.UniformType.Sampler2DMultisampleArray or
+                OpenTK.Graphics.OpenGL.UniformType.IntSampler2D or
+                OpenTK.Graphics.OpenGL.UniformType.IntSampler2DRect or
+                OpenTK.Graphics.OpenGL.UniformType.IntSampler2DArray or
+                OpenTK.Graphics.OpenGL.UniformType.IntSampler2DMultisample or
+                OpenTK.Graphics.OpenGL.UniformType.IntSampler2DMultisampleArray or
+                OpenTK.Graphics.OpenGL.UniformType.UnsignedIntSampler2D or
+                OpenTK.Graphics.OpenGL.UniformType.UnsignedIntSampler2DRect or
+                OpenTK.Graphics.OpenGL.UniformType.UnsignedIntSampler2DArray or
+                OpenTK.Graphics.OpenGL.UniformType.UnsignedIntSampler2DMultisample or
+                OpenTK.Graphics.OpenGL.UniformType.UnsignedIntSampler2DMultisampleArray or
+                
+                OpenTK.Graphics.OpenGL.UniformType.Sampler3D or
+                OpenTK.Graphics.OpenGL.UniformType.IntSampler3D or
+                OpenTK.Graphics.OpenGL.UniformType.UnsignedIntSampler3D or
+                OpenTK.Graphics.OpenGL.UniformType.SamplerCube or
+                OpenTK.Graphics.OpenGL.UniformType.SamplerCubeShadow or
+                OpenTK.Graphics.OpenGL.UniformType.SamplerCubeMapArray or
+                OpenTK.Graphics.OpenGL.UniformType.SamplerCubeMapArrayShadow or
+                OpenTK.Graphics.OpenGL.UniformType.IntSamplerCube or
+                OpenTK.Graphics.OpenGL.UniformType.IntSamplerCubeMapArray or
+                OpenTK.Graphics.OpenGL.UniformType.UnsignedIntSamplerCube or
+                OpenTK.Graphics.OpenGL.UniformType.UnsignedIntSamplerCubeMapArray
+                    => true,
+                _   => false,
+            };
+
+            return new ShaderMappingProperty(name, location);
+        }
+
+        private static ShaderMappingProperty GetBlock(int program, int index)
+        {
+            int size = 0;
+
+            unsafe
+            {
+                GL.GetActiveUniformBlockiv(program, (uint)index, UniformBlockPName.UniformBlockDataSize, &size);
+            }
+
+            GL.GetActiveUniformBlockName(program, (uint)index, 1024, out _, out string name);
+            return new ShaderMappingProperty(name, index);
+        }
+
+        public void Dispose()
+        {
+            Context.Collector.DeleteProgram(Handle);
+        }
+    }
+}

Dashboard.OpenGL/Drawing/GLStateExtensions.cs

@@ -0,0 +1,499 @@
+using System.Drawing;
+using System.Reflection.Emit;
+using System.Runtime.InteropServices;
+using Dashboard.Drawing;
+using OpenTK.Graphics.OpenGL;
+using OpenTK.Mathematics;
+using UniformType = Dashboard.Drawing.UniformType;
+using Vector2 = System.Numerics.Vector2;
+
+namespace Dashboard.OpenGL.Drawing
+{
+    public static class GLStateExtensions
+    {
+        extension(VertexAttributeType type)
+        {
+            public All OpenGL => type switch
+            {
+                VertexAttributeType.UnsignedByte => All.UnsignedByte,
+                VertexAttributeType.UnsignedShort => All.UnsignedShort,
+                VertexAttributeType.UnsignedInt => All.UnsignedInt,
+                VertexAttributeType.Byte => All.Byte,
+                VertexAttributeType.Short => All.Short,
+                VertexAttributeType.Int => All.Int,
+                VertexAttributeType.Half => All.HalfFloat,
+                VertexAttributeType.Float => All.Float,
+                VertexAttributeType.Double => All.Double,
+                _ => throw new ArgumentOutOfRangeException(),
+            };
+
+            public VertexAttribType VertexAttribType => (VertexAttribType)type.OpenGL;
+            public VertexAttribPointerType VertexAttribPointerType => (VertexAttribPointerType)type.OpenGL;
+        }
+
+        extension(TextureType type)
+        {
+            public TextureTarget OpenGL => type switch
+            {
+                TextureType.Texture1D => TextureTarget.Texture1D,
+                TextureType.Texture2D => TextureTarget.Texture2D,
+                TextureType.Texture2DArray => TextureTarget.Texture2DArray,
+                TextureType.Texture2DCube => TextureTarget.TextureCubeMap,
+                TextureType.Texture3D => TextureTarget.Texture3D,
+                _ => throw new ArgumentOutOfRangeException(),
+            };
+        }
+
+        extension(BlendEquation eq)
+        {
+            public BlendEquationMode OpenGL => eq switch
+            {
+                BlendEquation.Add => BlendEquationMode.FuncAdd,
+                BlendEquation.Subtract => BlendEquationMode.FuncSubtract,
+                BlendEquation.Max => BlendEquationMode.Max,
+                BlendEquation.Min => BlendEquationMode.Min,
+                BlendEquation.ReverseSubtract => BlendEquationMode.FuncReverseSubtract,
+                _ => throw new ArgumentOutOfRangeException(),
+            };
+        }
+
+        extension(BlendFunction mode)
+        {
+            public BlendingFactor OpenGL => mode switch
+            {
+                BlendFunction.One => BlendingFactor.One,
+                BlendFunction.Zero => BlendingFactor.Zero,
+                BlendFunction.SourceAlpha => BlendingFactor.SrcAlpha,
+                BlendFunction.OneMinusSourceAlpha => BlendingFactor.OneMinusSrcAlpha,
+                BlendFunction.DestinationAlpha => BlendingFactor.DstAlpha,
+                BlendFunction.OneMinusDestinationAlpha => BlendingFactor.OneMinusDstAlpha,
+                BlendFunction.SourceColor => BlendingFactor.SrcColor,
+                BlendFunction.OneMinusSourceColor => BlendingFactor.OneMinusSrcColor,
+                BlendFunction.DestinationColor => BlendingFactor.DstColor,
+                BlendFunction.OneMinusDestinationColor => BlendingFactor.OneMinusDstColor,
+                BlendFunction.ConstantColor => BlendingFactor.OneMinusConstantColor,
+                BlendFunction.OneMinusConstantColor => BlendingFactor.OneMinusConstantColor,
+                BlendFunction.ConstantAlpha => BlendingFactor.OneMinusConstantAlpha,
+                BlendFunction.OneMinusConstantAlpha => BlendingFactor.OneMinusConstantAlpha,
+                _ => throw new ArgumentOutOfRangeException(),
+            };
+        }
+
+        extension(TestFunction test)
+        {
+            public All OpenGL => test switch
+            {
+                TestFunction.Always => All.Always,
+                TestFunction.Equal => All.Equal,
+                TestFunction.Greater => All.Greater,
+                TestFunction.GreaterThanOrEqual => All.Gequal,
+                TestFunction.LessThan => All.Less,
+                TestFunction.LessThanOrEqual => All.Lequal,
+                TestFunction.Never => All.Never,
+                TestFunction.NotEqual => All.Notequal,
+                _ => throw new ArgumentOutOfRangeException(),
+            };
+
+            public DepthFunction DepthFunction      => (DepthFunction)test.OpenGL;
+            public StencilFunction StencilFunction  => (StencilFunction)test.OpenGL;
+        }
+
+        extension(StencilOperation op)
+        {
+            public StencilOp OpenGL => op switch
+            {
+                StencilOperation.Keep => StencilOp.Keep,
+                StencilOperation.Zero => StencilOp.Zero,
+                StencilOperation.Replace => StencilOp.Replace,
+                StencilOperation.Increment => StencilOp.Incr,
+                StencilOperation.UncheckedIncrement => StencilOp.IncrWrap,
+                StencilOperation.Decrement => StencilOp.Decr,
+                StencilOperation.UncheckedDecrement => StencilOp.DecrWrap,
+                StencilOperation.Invert => StencilOp.Invert,
+                _ => throw new ArgumentOutOfRangeException(),
+            };
+        }
+
+        extension(MeshPrimitive primitive)
+        {
+            public PrimitiveType OpenGL => primitive switch
+            {
+                MeshPrimitive.Line => PrimitiveType.Lines,
+                MeshPrimitive.Point => PrimitiveType.Points,
+                MeshPrimitive.Triangle => PrimitiveType.Triangles,
+                MeshPrimitive.TriangleFan => PrimitiveType.TriangleFan,
+                MeshPrimitive.TriangleStrip => PrimitiveType.TriangleStrip,
+                _ => throw new ArgumentOutOfRangeException(),
+            };
+        }
+
+        extension(IndexType index)
+        {
+            public DrawElementsType OpenGL => index switch
+            {
+                IndexType.Int or IndexType.UnsignedInt => DrawElementsType.UnsignedInt,
+                IndexType.Short or IndexType.UnsignedShort => DrawElementsType.UnsignedShort,
+                IndexType.UnsignedLong => throw new NotSupportedException(),
+                _ => throw new ArgumentOutOfRangeException(),
+            };
+        }
+
+        extension(BlendMode mode)
+        {
+            public void SetEnabled()
+            {
+                if (mode.Enabled)
+                    GL.Enable(EnableCap.Blend);
+                else
+                    GL.Disable(EnableCap.Blend);
+            }
+
+            public void SetMode()
+            {
+                if (mode.IsSeparate)
+                {
+                    GL.BlendEquationSeparate(mode.ColorEquation.OpenGL, mode.AlphaEquation.OpenGL);
+                    GL.BlendFuncSeparate(
+                        mode.Color.Source.OpenGL, mode.Color.Destination.OpenGL,
+                        mode.Alpha.Source.OpenGL, mode.Alpha.Destination.OpenGL);
+                }
+                else
+                {
+                    GL.BlendEquation(mode.UnifiedEquation.Value.OpenGL);
+                    GL.BlendFunc(mode.Unified.Value.Source.OpenGL, mode.Unified.Value.Destination.OpenGL);
+                }
+            }
+
+            public void SetConstant()
+            {
+                GL.BlendColor(mode.Constant.R / 255f, mode.Constant.G / 255f,mode.Constant.B / 255f,mode.Constant.A / 255f);
+            }
+
+            public void SetAll()
+            {
+                mode.SetEnabled();
+                mode.SetConstant();
+                mode.SetMode();
+            }
+        }
+
+        extension(DepthMode mode)
+        {
+            public void SetEnabled()
+            {
+                if (mode.Test)
+                    GL.Enable(EnableCap.DepthTest);
+                else
+                    GL.Disable(EnableCap.DepthTest);
+            }
+
+            public void SetMask() => GL.DepthMask(mode.Mask);
+
+            public void SetFunction() => GL.DepthFunc(mode.Function.DepthFunction);
+
+            public void SetAll()
+            {
+                mode.SetEnabled();
+                mode.SetMask();
+                mode.SetFunction();
+            }
+        }
+
+        extension(StencilMode mode)
+        {
+            public void SetEnabled()
+            {
+                if (mode.Enabled)
+                    GL.Enable(EnableCap.StencilTest);
+                else
+                    GL.Disable(EnableCap.StencilTest);
+            }
+
+            public void SetFunction() => GL.StencilFunc(mode.Function.StencilFunction, mode.Reference, (uint)mode.Mask);
+
+            public void SetOperations() => GL.StencilOp(mode.Fail.OpenGL, mode.DepthFail.OpenGL, mode.Pass.OpenGL);
+
+            public void SetAll()
+            {
+                mode.SetEnabled();
+                mode.SetFunction();
+                mode.SetOperations();
+            }
+        }
+
+        extension(PipelineState state)
+        {
+            public void SetViewport(Vector2 size)
+            {
+                Vector2 min = Vector2.Max(Vector2.Zero, state.ViewportRegion.Min);
+                Vector2 max = Vector2.Min(size, state.ViewportRegion.Max);
+
+                GL.Viewport(
+                    (int)Math.Round(min.X),
+                    (int)Math.Round(size.Y - max.Y),
+                    (int)Math.Round(max.X - min.X),
+                    (int)Math.Round(max.Y - min.Y));
+            }
+
+            // TODO: clamp to viewport size
+            public void SetScissor(Vector2 size)
+            {
+                if (state.ScissorRegion == new Box2d(Vector2.PositiveInfinity, Vector2.PositiveInfinity))
+                {
+                    GL.Disable(EnableCap.ScissorTest);
+                    return;
+                }
+
+                GL.Enable(EnableCap.ScissorTest);
+                GL.Scissor(
+                    (int)Math.Round(state.ViewportRegion.Left),
+                    (int)Math.Round(size.Y - state.ViewportRegion.Top),
+                    (int)Math.Round(state.ViewportRegion.Right - state.ViewportRegion.Left),
+                    (int)Math.Round(state.ViewportRegion.Bottom - state.ViewportRegion.Top));
+            }
+
+            public void SetFrontFace()
+            {
+                GL.FrontFace(state.FrontFace switch
+                {
+                    WindingOrder.Clockwise => FrontFaceDirection.Cw,
+                    WindingOrder.Counterclockwise => FrontFaceDirection.Ccw,
+                    _ => throw new ArgumentOutOfRangeException(),
+                });
+            }
+
+            public void SetCullMode()
+            {
+                if (state.CullMode == FaceCulling.None)
+                {
+                    GL.Disable(EnableCap.CullFace);
+                    return;
+                }
+
+                GL.Enable(EnableCap.CullFace);
+
+                GL.CullFace(state.CullMode switch
+                {
+                    FaceCulling.Both => TriangleFace.FrontAndBack,
+                    FaceCulling.Front => TriangleFace.Front,
+                    FaceCulling.Back => TriangleFace.Back,
+                    _ => throw new ArgumentOutOfRangeException(),
+                });
+            }
+
+            public void SetBlendMode() => state.BlendMode.SetAll();
+            public void SetDepthMode() => state.DepthMode.SetAll();
+            public void SetStencilMode() => state.StencilMode.SetAll();
+
+            public void SetColorMask()
+            {
+                GL.ColorMask(state.RedMask, state.GreenMask, state.BlueMask, state.AlphaMask);
+            }
+
+            public void SetPointSize()
+            {
+                GL.PointSize(state.PointSize);
+            }
+
+            public void SetLineWidth()
+            {
+                GL.LineWidth(state.LineWidth);
+            }
+        }
+
+        extension(DrawCall call)
+        {
+            public void UsePipeline() => GL.UseProgram((call.ShaderPipeline as GLShader)?.Handle ?? 0);
+
+            public void SetViewport(Vector2 size) => call.PipelineState.SetViewport(size);
+
+            public void SetScissor(Vector2 size) => call.PipelineState.SetViewport(size);
+
+            public void SetFrontFace() => call.PipelineState.SetFrontFace();
+
+            public void SetCullMode() => call.PipelineState.SetCullMode();
+
+            public void SetBlendMode() => call.PipelineState.BlendMode.SetAll();
+            public void SetDepthMode() => call.PipelineState.DepthMode.SetAll();
+            public void SetStencilMode() => call.PipelineState.StencilMode.SetAll();
+
+            public void SetColorMask() => call.PipelineState.SetColorMask();
+
+            public void SetPointSize() => call.PipelineState.SetPointSize();
+
+            public void SetLineWidth() => call.PipelineState.SetLineWidth();
+
+            public void SetPrimitiveRestart()
+            {
+                if (!call.EnableRestart)
+                {
+                    GL.Disable(EnableCap.PrimitiveRestart);
+                    return;
+                }
+
+                GL.Enable(EnableCap.PrimitiveRestart);
+                GL.PrimitiveRestartIndex((uint)call.RestartIndex);
+            }
+
+            public void UseTextures()
+            {
+                int i = 0;
+                foreach (ITexture? texture in call.Textures)
+                {
+                    GL.ActiveTexture((TextureUnit)((int)TextureUnit.Texture0 + i));
+                    if (texture is GLTexture glTexture)
+                    {
+                        GL.BindTexture(glTexture.Type.OpenGL, glTexture.Handle);
+                    }
+                    else
+                    {
+                        GL.BindTexture(TextureTarget.Texture2D, 0);
+                    }
+                }
+            }
+
+            public void UpdateVertexArrays(int vao)
+            {
+                GL.BindVertexArray(vao);
+
+                VertexSpecification spec = call.VertexSpecification;
+
+                if (spec.ElementBuffer != null)
+                {
+                    GL.BindBuffer(BufferTarget.ElementArrayBuffer, (spec.ElementBuffer as GLBuffer)?.Handle ?? 0);
+                }
+
+
+                for (int i = 0; i < spec.Attributes.Count; i++)
+                {
+                    VertexAttribute attrib = spec.Attributes[i];
+                    IBuffer? buffer = spec.VertexBuffers[i];
+
+                    GL.BindBuffer(BufferTarget.ArrayBuffer, (buffer as GLBuffer)?.Handle ?? 0);
+
+                    GL.VertexAttribPointer(
+                        (uint)attrib.Location,
+                        attrib.Components,
+                        attrib.Type.VertexAttribPointerType,
+                        false,
+                        (int)attrib.Stride,
+                        (nint)attrib.Offset);
+                    GL.EnableVertexAttribArray((uint)attrib.Location);
+                }
+            }
+
+            public void UpdateUniforms(bool transpose = false)
+            {
+                int bufferIndex = 0;
+                foreach (UniformDescriptor uniform in call.Uniforms)
+                {
+                    ReadOnlySpan<byte> uniformData = call.UniformData.Span;
+
+                    switch (uniform.Type)
+                    {
+                        case UniformType.I1:
+                        {
+                            ReadOnlySpan<int> span = CastSpan<int>(uniformData, uniform.Offset, uniform.Size);
+                            GL.Uniform1i(uniform.Location, span.Length, span);
+                            break;
+                        }
+                        case UniformType.I2:
+                        {
+                            ReadOnlySpan<Vector2i> span = CastSpan<Vector2i>(uniformData, uniform.Offset, uniform.Size);
+                            GL.Uniform2i(uniform.Location, span.Length, span);
+                            break;
+                        }
+                        case UniformType.I3:
+                        {
+                            ReadOnlySpan<Vector3i> span = CastSpan<Vector3i>(uniformData, uniform.Offset, uniform.Size);
+                            GL.Uniform3i(uniform.Location, span.Length, span);
+                            break;
+                        }
+                        case UniformType.I4:
+                        {
+                            ReadOnlySpan<Vector4i> span = CastSpan<Vector4i>(uniformData, uniform.Offset, uniform.Size);
+                            GL.Uniform4i(uniform.Location, span.Length, span);
+                            break;
+                        }
+                        case UniformType.F1:
+                        {
+                            ReadOnlySpan<float> span = CastSpan<float>(uniformData, uniform.Offset, uniform.Size);
+                            GL.Uniform1f(uniform.Location, span.Length, span);
+                            break;
+                        }
+                        case UniformType.F2:
+                        {
+                            ReadOnlySpan<Vector2> span = CastSpan<Vector2>(uniformData, uniform.Offset, uniform.Size);
+                            GL.Uniform2f(uniform.Location, span.Length, span);
+                            break;
+                        }
+                        case UniformType.F3:
+                        {
+                            ReadOnlySpan<Vector3> span = CastSpan<Vector3>(uniformData, uniform.Offset, uniform.Size);
+                            GL.Uniform3f(uniform.Location, span.Length, span);
+                            break;
+                        }
+                        case UniformType.F4:
+                        {
+                            ReadOnlySpan<Vector4> span = CastSpan<Vector4>(uniformData, uniform.Offset, uniform.Size);
+                            GL.Uniform4f(uniform.Location, span.Length, span);
+                            break;
+                        }
+                        case UniformType.Mat2:
+                        {
+                            ReadOnlySpan<Matrix2> span = CastSpan<Matrix2>(uniformData, uniform.Offset, uniform.Size);
+                            GL.UniformMatrix2f(uniform.Location, span.Length, transpose, span);
+                            break;
+                        }
+                        case UniformType.Mat3:
+                        {
+                            ReadOnlySpan<Matrix3> span = CastSpan<Matrix3>(uniformData, uniform.Offset, uniform.Size);
+                            GL.UniformMatrix3f(uniform.Location, span.Length, transpose, span);
+                            break;
+                        }
+                        case UniformType.Mat4:
+                        {
+                            ReadOnlySpan<Matrix4> span = CastSpan<Matrix4>(uniformData, uniform.Offset, uniform.Size);
+                            GL.UniformMatrix4f(uniform.Location, span.Length, transpose, span);
+                            break;
+                        }
+                        case UniformType.Buffer:
+                        {
+                            int buffer = (call.UniformBuffer as GLBuffer)?.Handle ?? 0;
+                            int index = bufferIndex++;
+                            GL.BindBufferRange(BufferTarget.UniformBuffer, (uint)index, buffer, (nint)uniform.Offset, (int)uniform.Size);
+                            break;
+                        }
+                        default: throw new NotSupportedException();
+                    }
+                }
+
+                return;
+
+                ReadOnlySpan<T> CastSpan<T>(ReadOnlySpan<byte> bytes, long offset, long size)
+                    where T : unmanaged
+                {
+                    return MemoryMarshal.Cast<byte, T>(bytes.Slice((int)offset, (int)size));
+                }
+            }
+
+            public void SetAll(Vector2 size, int vao, bool transpose = false)
+            {
+                call.UsePipeline();
+                call.SetViewport(size); call.SetScissor(size);
+                call.SetFrontFace();
+                call.SetCullMode();
+                call.SetBlendMode();
+                call.SetDepthMode();
+                call.SetStencilMode();
+                call.SetPrimitiveRestart();
+                call.SetColorMask();
+                call.SetPointSize();
+                call.SetLineWidth();
+                call.UseTextures();
+                call.UpdateUniforms(transpose);
+                call.UpdateVertexArrays(vao);
+            }
+        }
+    }
+}

Dashboard.OpenGL/Drawing/GLTexture.cs

@@ -1,61 +1,12 @@
 using System.Drawing;
-using Dashboard.Pal;
+using Dashboard.Drawing;
+using Dashboard.OpenGL.Drawing;
 using OpenTK.Graphics.OpenGL;
 using OGL = OpenTK.Graphics.OpenGL;
 
-namespace Dashboard.Drawing.OpenGL.Pal
+namespace Dashboard.OpenGL
 {
-    public class GLTextureExtension : ITextureExtension, IContextExtensionBase<GLDeviceContext>
+    public class GLTexture(DirectRendering extension, TextureType type) : ITexture
-    {
-        public string DriverName => "Dashboard OpenGL Texture Extension";
-        public string DriverVendor => "Dashboard";
-        public Version DriverVersion => new Version(0, 1, 0);
-        public GLDeviceContext Context { get; private set; } = null!;
-        public bool SupportsArbTextureStorage { get; private set; }
-        public bool SupportsAnisotropy { get; private set; }
-
-        IContextBase IContextExtensionBase.Context => Context;
-        DeviceContext IContextExtensionBase<DeviceContext>.Context => Context;
-
-        private List<GLTexture> _textures = new List<GLTexture>();
-
-        public void Dispose()
-        {
-            throw new NotImplementedException();
-        }
-
-
-        public void Require(GLDeviceContext context)
-        {
-            Context = context;
-
-            SupportsArbTextureStorage = Context.DriverVersion >= new Version(4, 2) ||
-                                        Context.IsGLExtensionAvailable("GL_ARB_texture_storage");
-            SupportsAnisotropy = Context.DriverVersion >= new Version() ||
-                                 Context.IsGLExtensionAvailable("GL_EXT_texture_filter_anisotropic") ||
-                                 Context.IsGLExtensionAvailable("GL_ARB_texture_filter_anisotropic");
-        }
-        public void Require(DeviceContext context) => Require((GLDeviceContext)context);
-        public void Require(IContextBase context) => Require((GLDeviceContext)context);
-
-
-
-        public GLTexture CreateTexture(TextureType type)
-        {
-            GLTexture texture = new GLTexture(this, type);
-            lock (_textures) _textures.Add(texture);
-            return texture;
-        }
-
-        internal void TextureDisposed(GLTexture texture)
-        {
-            lock (_textures) _textures.Remove(texture);
-        }
-
-        ITexture ITextureExtension.CreateTexture(TextureType type) => CreateTexture(type);
-    }
-
-    public class GLTexture(GLTextureExtension extension, TextureType type) : ITexture
     {
         public int Handle { get; private set; } = 0;
         public bool IsValid => Handle != 0;
@@ -79,17 +30,22 @@ namespace Dashboard.Drawing.OpenGL.Pal
 
         private TextureTarget Target { get; } = type switch
         {
-            TextureType.Texture1D => TextureTarget.Texture1d,
+            TextureType.Texture1D => TextureTarget.Texture1D,
-            TextureType.Texture2D => TextureTarget.Texture2d,
+            TextureType.Texture2D => TextureTarget.Texture2D,
-            TextureType.Texture3D => TextureTarget.Texture3d,
+            TextureType.Texture3D => TextureTarget.Texture3D,
-            TextureType.Texture2DArray => TextureTarget.Texture2dArray,
+            TextureType.Texture2DArray => TextureTarget.Texture2DArray,
             TextureType.Texture2DCube => TextureTarget.TextureCubeMap,
             _ => throw new NotSupportedException()
         };
 
-        private GLTextureExtension Extension { get; } = extension;
+        private DirectRendering Extension { get; } = extension;
         private GLDeviceContext Context => Extension.Context;
 
+        ~GLTexture()
+        {
+            Dispose(false);
+        }
+
         public void SetStorage(PixelFormat format, int width, int height, int depth, int levels)
         {
             if (!Context.IsRenderThread)
@@ -98,6 +54,11 @@ namespace Dashboard.Drawing.OpenGL.Pal
                 return;
             }
 
+            if (levels == 0)
+            {
+                levels = Math.Max(Math.ILogB(width), Math.ILogB(height));
+            }
+
             Bind();
             SizedInternalFormat glFormat = GetFormat(format);
             if (Extension.SupportsArbTextureStorage)
@@ -122,18 +83,23 @@ namespace Dashboard.Drawing.OpenGL.Pal
                 switch (Type)
                 {
                     case TextureType.Texture1D:
-                        GL.TexImage1D(Target, 0, (InternalFormat)glFormat, width, 0, (OGL.PixelFormat)glFormat, PixelType.Byte, IntPtr.Zero);
+                        GL.TexImage1D(Target, 0, (InternalFormat)glFormat, width, 0, (OGL.PixelFormat)glFormat, PixelType.UnsignedByte, IntPtr.Zero);
                         break;
                     case TextureType.Texture2D:
-                        GL.TexImage2D(Target, 0, (InternalFormat)glFormat, width, height, 0, (OGL.PixelFormat)glFormat, PixelType.Byte, IntPtr.Zero);
+                        GL.TexImage2D(Target, 0, (InternalFormat)glFormat, width, height, 0, (OGL.PixelFormat)glFormat, PixelType.UnsignedByte, IntPtr.Zero);
                         break;
                     case TextureType.Texture3D:
                     case TextureType.Texture2DArray:
                     case TextureType.Texture2DCube:
-                        GL.TexImage3D(Target, 0, (InternalFormat)glFormat, width, height, depth, 0, (OGL.PixelFormat)glFormat, PixelType.Byte, IntPtr.Zero);
+                        GL.TexImage3D(Target, 0, (InternalFormat)glFormat, width, height, depth, 0, (OGL.PixelFormat)glFormat, PixelType.UnsignedByte, IntPtr.Zero);
                         break;
                 }
             }
+
+            Width = width;
+            Height = height;
+            Depth = depth;
+            Levels = levels;
         }
 
         public void Read<T>(Span<T> buffer, int level = 0, int align = 0) where T : unmanaged
@@ -141,11 +107,19 @@ namespace Dashboard.Drawing.OpenGL.Pal
             throw new NotImplementedException();
         }
 
-        public unsafe void Write<T>(PixelFormat format, ReadOnlySpan<T> buffer, int level = 0, int align = 4) where T : unmanaged
+        void ITexture.Write<T>(PixelFormat format, ReadOnlySpan<T> buffer, int level, int align) => Write(format, buffer, level, align, null);
+
+        public unsafe void Write<T>(PixelFormat format, ReadOnlySpan<T> buffer, int level = 0, int align = 4, TimeSpan? timeout = null) where T : unmanaged
         {
             if (!Context.IsRenderThread)
             {
-                throw new NotImplementedException();
+                T[] bufferArray = buffer.ToArray();
+                Task task = Context.InvokeBeforeDraw(() => Write<T>(format, bufferArray, level, align));
+
+                if (timeout.HasValue)
+                    task.Wait(timeout.Value);
+                else
+                    task.Wait();
             }
 
             Bind();
@@ -160,7 +134,7 @@ namespace Dashboard.Drawing.OpenGL.Pal
 
             PixelType glType = format switch
             {
-                PixelFormat.R8I or PixelFormat.Rg8I or PixelFormat.Rgb8I or PixelFormat.Rgba8I => PixelType.Byte,
+                PixelFormat.R8I or PixelFormat.Rg8I or PixelFormat.Rgb8I or PixelFormat.Rgba8I => PixelType.UnsignedByte,
                 PixelFormat.R16F or PixelFormat.Rg16F or PixelFormat.Rgb16F or PixelFormat.Rgba16F => PixelType.HalfFloat,
                 _ => throw new NotSupportedException()
             };
@@ -207,11 +181,37 @@ namespace Dashboard.Drawing.OpenGL.Pal
             GL.GenerateMipmap(Target);
         }
 
-        public void Dispose()
+        private void Dispose(bool disposing)
         {
-            throw new NotImplementedException();
+            if (IsDisposed)
+                return;
+            IsDisposed = true;
+
+            if (disposing)
+            {
+                if (Thread.CurrentThread != Context.RendererThread)
+                {
+                    Context.Collector.DeleteTexture(Handle);
+                }
+                else
+                {
+                    GL.DeleteTexture(Handle);
+                }
+
+                Handle = 0;
+
+                GC.SuppressFinalize(this);
+            }
+            else
+            {
+                Context.Collector.DeleteTexture(Handle);
+            }
         }
 
+        public bool IsDisposed { get; private set; }
+
+        public void Dispose() => Dispose(false);
+
         private void Bind()
         {
             if (Handle == 0)

Dashboard.OpenGL/Drawing/ImmediateMode.cs

@@ -0,0 +1,212 @@
+using System.Drawing;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using Dashboard.Drawing;
+using Dashboard.Pal;
+using OpenTK.Graphics.OpenGL;
+
+namespace Dashboard.OpenGL.Drawing
+{
+    public class ImmediateMode : IImmediateMode
+    {
+        public string DriverName => "Dashboard OpenGL Immediate Mode";
+        public string DriverVendor => "Dashboard";
+        public Version DriverVersion { get; } = new Version(1, 0);
+
+        public DeviceContext Context { get; private set; } = null!;
+
+        private IDirectRendering _dr;
+        private GLShader _program;
+
+        private uint _program_apos;
+        private uint _program_atexcoord;
+        private uint _program_acolor;
+        private int _program_transforms;
+        private int _program_image;
+        private GLTexture _white;
+
+        public void Dispose()
+        {
+        }
+
+        public void Require(DeviceContext context)
+        {
+            Context = context;
+            _dr = context.ExtensionRequire<IDirectRendering>();
+
+            GlslShaderCreateInfo shader;
+
+            using (StreamReader vertex = new StreamReader(GetType().Assembly
+                       .GetManifestResourceStream("Dashboard.OpenGL.Drawing.immediate.vert")!))
+            using (StreamReader fragment = new StreamReader(GetType().Assembly
+                       .GetManifestResourceStream("Dashboard.OpenGL.Drawing.immediate.frag")!))
+            {
+                shader = new GlslShaderCreateInfo()
+                {
+                    VertexShader = vertex.ReadToEnd(),
+                    FragmentShader = fragment.ReadToEnd(),   
+                };
+            }
+
+            _program = (GLShader)_dr.CreateShader(shader);
+
+            _program_apos = (uint)GL.GetAttribLocation(_program.Handle, "aPos");
+            _program_atexcoord = (uint)GL.GetAttribLocation(_program.Handle, "aTexCoords");
+            _program_acolor = (uint)GL.GetAttribLocation(_program.Handle, "aColor");
+
+            _program_transforms = GL.GetUniformLocation(_program.Handle, "transforms");
+            _program_image = GL.GetUniformLocation(_program.Handle, "image");
+
+            _white = (GLTexture)_dr.CreateTexture(TextureType.Texture2D);
+            _white.SetStorage(PixelFormat.Rgb8I, 1, 1, 1, 1);
+            _white.Swizzle = new ColorSwizzle(ColorChannel.One, ColorChannel.One, ColorChannel.One, ColorChannel.One);
+            _white.MinifyFilter = TextureFilter.Nearest;
+            _white.MagnifyFilter = TextureFilter.Nearest;
+            
+            // TODO: implement the API above instead of writing this manually.
+            GL.BindTexture(TextureTarget.Texture2D, _white.Handle);
+            GL.TexSubImage2D(TextureTarget.Texture2D, 0, 0, 0, 1, 1, OpenTK.Graphics.OpenGL.PixelFormat.Rgb, PixelType.Byte, stackalloc byte[] { 0xFF, 0xFF, 0xFF, 0xFF });
+            GL.TexParameteri(TextureTarget.Texture2D, TextureParameterName.TextureSwizzleA, (int)All.One);
+            GL.TexParameteri(TextureTarget.Texture2D, TextureParameterName.TextureSwizzleR, (int)All.One);
+            GL.TexParameteri(TextureTarget.Texture2D, TextureParameterName.TextureSwizzleG, (int)All.One);
+            GL.TexParameteri(TextureTarget.Texture2D, TextureParameterName.TextureSwizzleB, (int)All.One);
+            GL.TexParameteri(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
+            GL.TexParameteri(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
+        }
+
+        public void ClearColor(Color color)
+        {
+            GL.ClearColor(color.R / 255f, color.G / 255f, color.B / 255f, color.A / 255f);
+            GL.Clear(ClearBufferMask.ColorBufferBit);
+        }
+
+        public void Line(Vector2 a, Vector2 b, float width, float depth, Vector4 color)
+        {
+            Vector2 normal = Vector2.Normalize(b - a);
+            Vector2 tangent = new Vector2(-normal.Y, normal.X) * width;
+            Span<ImmediateVertex> vertices =
+            [
+                new ImmediateVertex(new Vector3(a-tangent, depth), Vector2.Zero, color),
+                new ImmediateVertex(new Vector3(b-tangent, depth), Vector2.Zero, color),
+                new ImmediateVertex(new Vector3(b+tangent, depth), Vector2.Zero, color),
+                new ImmediateVertex(new Vector3(a-tangent, depth), Vector2.Zero, color),
+                new ImmediateVertex(new Vector3(b+tangent, depth), Vector2.Zero, color),
+                new ImmediateVertex(new Vector3(a+tangent, depth), Vector2.Zero, color),
+            ];
+
+            DrawImmediate(new ImmediateDrawCall(MeshPrimitive.Triangle, vertices.ToArray())
+            {
+                Transforms = Context.ExtensionRequire<IDeviceContextBase>().Transforms,
+                PipelineState = new PipelineState { CullMode = FaceCulling.None },
+            });
+        }
+
+        public void Rectangle(Box2d rectangle, float depth, Vector4 color)
+        {
+            Span<ImmediateVertex> vertices =
+            [
+                new ImmediateVertex(new Vector3(rectangle.Min.X, rectangle.Min.Y, depth), Vector2.Zero, color),
+                new ImmediateVertex(new Vector3(rectangle.Max.X, rectangle.Min.Y, depth), Vector2.Zero, color),
+                new ImmediateVertex(new Vector3(rectangle.Max.X, rectangle.Max.Y, depth), Vector2.Zero, color),
+                new ImmediateVertex(new Vector3(rectangle.Min.X, rectangle.Min.Y, depth), Vector2.Zero, color),
+                new ImmediateVertex(new Vector3(rectangle.Max.X, rectangle.Max.Y, depth), Vector2.Zero, color),
+                new ImmediateVertex(new Vector3(rectangle.Min.X, rectangle.Max.Y, depth), Vector2.Zero, color),
+            ];
+
+            DrawImmediate(new ImmediateDrawCall(MeshPrimitive.Triangle, vertices.ToArray())
+            {
+                Transforms = Context.ExtensionRequire<IDeviceContextBase>().Transforms,
+                PipelineState = new PipelineState { CullMode = FaceCulling.None },
+            });
+        }
+
+        public void Rectangle(in RectangleDrawInfo rectangle)
+        {
+            // TODO: implement this better.
+            int z = Context.ExtensionRequire<IDeviceContextBase>().IncrementZ();
+            Color color = (rectangle.Fill as SolidColorBrush)?.Color ?? Color.LightGray;
+            Vector4 colorV = new Vector4(color.R / 255f, color.G / 255f, color.B / 255f, color.A / 255f);
+            Vector2 size = rectangle.Box.Size;
+            Box2d box = Box2d.FromPositionAndSize(rectangle.Position, size);
+
+            Rectangle(box, z, colorV);
+        }
+
+        public void Image(Box2d rectangle, Box2d uv, float depth, ITexture texture)
+        {
+            Span<ImmediateVertex> vertices =
+            [
+                new ImmediateVertex(new Vector3(rectangle.Min.X, rectangle.Min.Y, depth), new Vector2(uv.Min.X, uv.Min.Y), Vector4.One),
+                new ImmediateVertex(new Vector3(rectangle.Max.X, rectangle.Min.Y, depth), new Vector2(uv.Max.X, uv.Min.Y), Vector4.One),
+                new ImmediateVertex(new Vector3(rectangle.Max.X, rectangle.Max.Y, depth), new Vector2(uv.Max.X, uv.Max.Y), Vector4.One),
+                new ImmediateVertex(new Vector3(rectangle.Min.X, rectangle.Min.Y, depth), new Vector2(uv.Min.X, uv.Min.Y), Vector4.One),
+                new ImmediateVertex(new Vector3(rectangle.Max.X, rectangle.Max.Y, depth), new Vector2(uv.Max.X, uv.Max.Y), Vector4.One),
+                new ImmediateVertex(new Vector3(rectangle.Min.X, rectangle.Max.Y, depth), new Vector2(uv.Min.X, uv.Max.Y), Vector4.One),
+            ];
+
+            DrawImmediate(new ImmediateDrawCall(MeshPrimitive.Triangle, vertices.ToArray())
+            {
+                Transforms = Context.ExtensionRequire<IDeviceContextBase>().Transforms,
+                PipelineState = new PipelineState { CullMode = FaceCulling.None },
+                Texture = texture,
+            });
+        }
+
+        IContextBase IContextExtensionBase.Context => Context;
+
+        void IContextExtensionBase.Require(IContextBase context)
+        {
+            Require((DeviceContext)context);
+        }
+
+        public void DrawImmediate(ImmediateDrawCall call)
+        {
+            // This is a terrible implementation as it stands but we can improve this immensely later on.
+            IDirectRendering dr = Context.ExtensionRequire<IDirectRendering>();
+
+            int size = call.Vertices.Length * ImmediateVertex.Size;
+            
+            IBuffer buffer = dr.CreateBuffer(BufferAccessPattern.Stream, size);
+            buffer.Write(0, call.Vertices.Span);
+
+            VertexSpecification spec = CreateVertexSpec(buffer);
+            ReadOnlyMemory<byte> uniforms = MemoryMarshal.AsBytes(stackalloc Matrix4x4[] {call.Transforms}).ToArray();
+            
+            DrawCall drawCall = new DrawCall(call.Primitive, spec, 0, call.Vertices.Length)
+            {
+                ShaderPipeline = _program,
+                PipelineState = call.PipelineState,
+                UniformData = uniforms,
+                Uniforms = [
+                    new UniformDescriptor() { 
+                        Location = _program_transforms,
+                        Type =  Dashboard.Drawing.UniformType.Mat4,
+                        Offset = 0,
+                        Size = Unsafe.SizeOf<Matrix4x4>(),
+                    }
+                ],
+                Textures = [call.Texture ?? _white]
+            };
+
+            dr.Draw(drawCall);
+            buffer.Dispose();
+        }
+
+        private VertexSpecification CreateVertexSpec(IBuffer buffer)
+        {
+            return new VertexSpecification(
+                [
+                    new VertexAttribute((int)_program_apos, 3, VertexAttributeType.Float, ImmediateVertex.PosOffset, ImmediateVertex.Size),
+                    new VertexAttribute((int)_program_atexcoord, 2, VertexAttributeType.Float, ImmediateVertex.TexCoordsOffset, ImmediateVertex.Size),
+                    new VertexAttribute((int)_program_acolor, 4, VertexAttributeType.Float, ImmediateVertex.ColorOffset, ImmediateVertex.Size)
+                ],
+                [
+                    buffer,
+                    buffer,
+                    buffer
+                ]
+            );
+        }
+    }
+}

Dashboard.OpenGL/Drawing/KhronosShaderHelper.cs

@@ -0,0 +1,156 @@
+using System.Text;
+using Dashboard.Drawing;
+using OpenTK.Graphics.OpenGL;
+
+namespace Dashboard.OpenGL.Drawing
+{
+    public static class KhronosShaderHelper
+    {
+        public static int CompileStage(ShaderType type, string source, out string? log)
+        {
+            log = null;
+            int shader = GL.CreateShader(type);
+
+            GL.ShaderSource(shader, source);
+            GL.CompileShader(shader);
+
+            GL.GetShaderi(shader, ShaderParameterName.CompileStatus, out int flag);
+
+            if (flag != 0)
+                return shader;
+
+            GL.GetShaderInfoLog(shader, out log);
+            GL.DeleteShader(shader);
+            return 0;
+        }
+
+        public static int LinkStages(ReadOnlySpan<int> stages, out string? log)
+        {
+            log = null;
+            int program = GL.CreateProgram();
+
+            foreach (int stage in stages)
+            {
+                GL.AttachShader(program, stage);
+            }
+
+            GL.LinkProgram(program);
+            GL.GetProgrami(program, ProgramProperty.LinkStatus, out int flag);
+
+            if (flag != 0)
+                return program;
+
+            GL.GetProgramInfoLog(program, out log);
+            GL.DeleteProgram(program);
+            return 0;
+        }
+
+        public static int CreateProgram(this GlslShaderCreateInfo glsl)
+        {
+            Span<int> stages = stackalloc int[5];
+            int failed = 0;
+            StringBuilder builder = new StringBuilder();
+
+            int count = 0;
+
+            Compile(ShaderType.VertexShader, glsl.VertexShader, "Vertex", stages);
+            Compile(ShaderType.FragmentShader, glsl.FragmentShader, "Fragment", stages);
+            Compile(ShaderType.GeometryShader, glsl.GeometryShader, "Geometry", stages);
+            Compile(ShaderType.TessControlShader, glsl.TesselationControl, "Tesselation Control", stages);
+            Compile(ShaderType.TessEvaluationShader, glsl.TesselationEvaluation, "Tesselation Evaluation", stages);
+
+            if (failed > 0)
+            {
+                throw new Exception($"{failed} shader stage(s) failed to compile. See the exception data for details.")
+                {
+                    Data =
+                    {
+                        ["Log"] = builder.ToString(),
+                    },
+                };
+            }
+
+            int program = KhronosShaderHelper.LinkStages(stages[..count], out string? log);
+            if (program == 0)
+            {
+                throw new Exception($"Shader program failed to link. See the exception data for details.")
+                {
+                    Data =
+                    {
+                        ["Log"] = log,
+                    },
+                };
+            }
+
+            return program;
+
+            void Compile(ShaderType type, string? source, string name, Span<int> stages)
+            {
+                if (source == null)
+                    return;
+
+                int stage = CompileStage(type, source, out string? log);
+                if (stage == 0)
+                {
+                    failed++;
+                    builder.Append($"=== {name} Shader Compile Log Begin ===\n{log}\n=== {name} Shader Compile Log End ===\n\n");
+                }
+                else
+                {
+                    stages[count++] = stage;
+                }
+            }
+        }
+
+        public static int CreateProgram(this GlslComputeShaderCreateInfo glsl)
+        {
+            int compute = CompileStage(ShaderType.ComputeShader, glsl.Source, out string? log);
+            if (compute == 0)
+            {
+                throw new Exception("Failed to compile compute shader. See the exception data for details.")
+                {
+                    Data =
+                    {
+                        ["Log"] = log,
+                    },
+                };
+            }
+
+            int program = KhronosShaderHelper.LinkStages([compute], out log);
+
+            if (program != 0)
+                return program;
+
+            throw new Exception("Failed to link compute shader. See the exception data for details.")
+            {
+                Data =
+                {
+                    ["Log"] = log,
+                },
+            };
+        }
+
+        public static int CreateProgram(this SpirvShaderCreateInfo spirv)
+        {
+            int program = GL.CreateProgram();
+            GL.ProgramBinary(program, (All)spirv.Format, spirv.Binary, spirv.Binary.Length);
+
+            GL.GetProgrami(program, ProgramProperty.LinkStatus, out int flag);
+            if (flag == 0)
+                return program;
+
+            GL.GetProgramInfoLog(program, out string? log);
+            GL.DeleteProgram(program);
+
+            throw new Exception("Failed to load program binary. See the exception data for details.")
+            {
+                Data =
+                {
+                    ["Log"] = log,
+                },
+            };
+        }
+    }
+
+
+}

Dashboard.OpenGL/Drawing/immediate.frag

@@ -0,0 +1,12 @@
+#version 130
+
+uniform sampler2D image;
+
+in vec2 vTexCoords;
+in vec4 vColor;
+
+out vec4 fragColor;
+
+void main() {
+    fragColor = vColor * texture(image, vTexCoords);
+}

Dashboard.OpenGL/Drawing/immediate.vert

@@ -0,0 +1,18 @@
+#version 130
+
+uniform mat4 transforms;
+
+in vec3 aPos;
+in vec2 aTexCoords;
+in vec4 aColor;
+
+out vec2 vTexCoords;
+out vec4 vColor;
+
+void main() {
+    vec4 position = transforms * vec4(aPos, 1.0);
+    gl_Position = position;
+
+    vTexCoords = aTexCoords;
+    vColor = aColor;
+}

Dashboard.OpenGL/GLBuffer.cs

@@ -0,0 +1,98 @@
+using System.Runtime.CompilerServices;
+using Dashboard.Drawing;
+using OpenTK.Graphics.OpenGL;
+
+namespace Dashboard.OpenGL
+{
+    public class GLBuffer(GLDeviceContext dc, BufferAccessPattern pattern, int handle, long size, long offset) : IBuffer
+    {
+        // TODO: At the moment, this class does no pooling. Convert it to a pool for better API usage.
+
+        public BufferAccessPattern AccessPattern { get; } = pattern;
+        public long Size { get; private set; } = size;
+        public long Offset { get; private set; } = offset;
+        public int Handle { get; private set; } = handle;
+
+        public void Reallocate(long newSize)
+        {
+            GL.GenBuffer(out int handle);
+            GL.BindBuffer(BufferTarget.ArrayBuffer, handle);
+            GL.BufferData(BufferTarget.ArrayBuffer, (nint)newSize, (nint)0, AccessPattern switch
+            {
+                BufferAccessPattern.Stream => BufferUsage.StreamDraw,
+                BufferAccessPattern.Static => BufferUsage.StaticDraw,
+                BufferAccessPattern.Download => BufferUsage.DynamicCopy,
+                BufferAccessPattern.Upload => BufferUsage.DynamicCopy,
+                _ => BufferUsage.DynamicDraw,
+            });
+
+            if (Handle != -1)
+                GL.DeleteBuffer(Handle);
+
+            Handle = handle;
+            Size = newSize;
+            Offset = 0;
+        }
+
+        public unsafe Span<T> Map<T>(long offset, int count = -1)
+            where T : unmanaged
+        {
+            ArgumentOutOfRangeException.ThrowIfNegative(offset);
+
+            if (count < 0)
+                count = (int)(Size / Unsafe.SizeOf<T>());
+
+            long absOffset = Offset + offset;
+            long absCount = count * Unsafe.SizeOf<T>();
+            ArgumentOutOfRangeException.ThrowIfGreaterThan(offset + absCount, Size);
+
+            GL.BindBuffer(BufferTarget.ArrayBuffer, Handle);
+            nint ptr = (nint)GL.MapBuffer(BufferTarget.ArrayBuffer, BufferAccess.ReadWrite);
+
+            return new Span<T>((T*)(ptr + absOffset), count);
+        }
+
+        public void Unmap()
+        {
+            GL.BindBuffer(BufferTarget.ArrayBuffer, Handle);
+            GL.UnmapBuffer(BufferTarget.ArrayBuffer);
+        }
+
+        public void Read<T>(long offset, Span<T> span) where T : unmanaged
+        {
+            long absCount = span.Length * Unsafe.SizeOf<T>();
+            ArgumentOutOfRangeException.ThrowIfGreaterThan(offset + absCount, Size);
+
+            GL.BindBuffer(BufferTarget.ArrayBuffer, Handle);
+            GL.GetBufferSubData(BufferTarget.ArrayBuffer, (nint)(Offset + offset), (nint)absCount, span);
+        }
+
+        public void Write<T>(long offset, ReadOnlySpan<T> span) where T : unmanaged
+        {
+            long absCount = span.Length * Unsafe.SizeOf<T>();
+            ArgumentOutOfRangeException.ThrowIfGreaterThan(offset + absCount, Size);
+
+            GL.BindBuffer(BufferTarget.ArrayBuffer, Handle);
+            GL.BufferSubData(BufferTarget.ArrayBuffer, (nint)(Offset + offset), (nint)absCount, span);
+        }
+
+        public void Dispose()
+        {
+            if (Handle == -1)
+                return;
+
+            dc.Collector.DeleteBufffer(Handle);
+            Handle = -1;
+
+            GC.SuppressFinalize(this);
+        }
+
+        public static GLBuffer Create(GLDeviceContext dc, BufferAccessPattern pattern, long size)
+        {
+            GLBuffer buffer = new GLBuffer(dc, pattern, -1, 0, 0);
+            buffer.Reallocate(size);
+
+            return buffer;
+        }
+    }
+}

Dashboard.OpenGL/GLDeviceContext.cs

@@ -1,12 +1,15 @@
 using System.Collections.Concurrent;
 using System.Collections.Immutable;
-using Dashboard.OpenGL;
+using System.Numerics;
+using Dashboard.Drawing;
+using Dashboard.OpenGL.Drawing;
 using Dashboard.Pal;
+using Dashboard.Windowing;
 using OpenTK;
 using OpenTK.Graphics;
 using OpenTK.Graphics.OpenGL;
 
-namespace Dashboard.Drawing.OpenGL.Pal
+namespace Dashboard.OpenGL
 {
     internal class GLContextBindingsContext(IGLContext context) : IBindingsContext
     {
@@ -20,9 +23,14 @@ namespace Dashboard.Drawing.OpenGL.Pal
     {
         public IGLContext GLContext { get; }
 
+        public ContextCollector Collector { get; } = new ContextCollector();
+
         public override string DriverName     => "Dashboard OpenGL Device Context";
         public override string DriverVendor   => "Dashboard";
         public override Version DriverVersion => new Version(0, 1, 0);
+        public override ISwapGroup SwapGroup { get; }
+        public override Vector2 FramebufferSize => GLContext.FramebufferSize;
+        public override bool DoubleBuffered { get; } = true;
 
         public Version GLVersion { get; }
         public string GLRenderer { get; }
@@ -35,9 +43,11 @@ namespace Dashboard.Drawing.OpenGL.Pal
         private readonly ConcurrentQueue<Task> _beforeDrawActions = new ConcurrentQueue<Task>();
         private readonly ConcurrentQueue<Task> _afterDrawActions = new ConcurrentQueue<Task>();
 
-        public GLDeviceContext(IGLContext context)
+        public GLDeviceContext(Application app, IWindow? window, IGLContext context, ISwapGroup swap) : base(app, window)
         {
             GLContext = context;
+            SwapGroup = swap;
+
             context.MakeCurrent();
             GLLoader.LoadBindings(new GLContextBindingsContext(context));
 
@@ -61,7 +71,9 @@ namespace Dashboard.Drawing.OpenGL.Pal
 
             Extensions = extensions.ToImmutableHashSet();
 
-            ExtensionPreload<GLTextureExtension>();
+            ExtensionPreload<DeviceContextBase>();
+            ExtensionPreload<ImmediateMode>();
+            ExtensionPreload<DirectRendering>();
         }
 
         public bool IsGLExtensionAvailable(string name)
@@ -130,6 +142,9 @@ namespace Dashboard.Drawing.OpenGL.Pal
             base.Begin();
 
             GLContext.MakeCurrent();
+            IDeviceContextBase dc = ExtensionRequire<IDeviceContextBase>();
+            dc.ResetClip();
+            dc.ResetTransforms();
 
             while (_beforeDrawActions.TryDequeue(out Task? action))
             {
@@ -139,12 +154,12 @@ namespace Dashboard.Drawing.OpenGL.Pal
 
         public override void End()
         {
-            base.End();
-
             while (_afterDrawActions.TryDequeue(out Task? action))
             {
                 action.RunSynchronously();
             }
+
+            base.End();
         }
 
         protected override void Dispose(bool isDisposing)

Dashboard.OpenGL/IGLContext.cs

@@ -1,4 +1,4 @@
-using System.Drawing;
+using System.Numerics;
 using Dashboard.Windowing;
 
 namespace Dashboard.OpenGL
@@ -14,11 +14,6 @@ namespace Dashboard.OpenGL
         /// <remarks>-1 assigns no group.</remarks>
         public int ContextGroup { get; }
 
-        /// <summary>
-        /// The size of the framebuffer in pixels.
-        /// </summary>
-        public Size FramebufferSize { get; }
-
         /// <summary>
         /// Called when the context is disposed.
         /// </summary>