79 lines
2.4 KiB
C#
79 lines
2.4 KiB
C#
using System.Drawing;
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using System.Numerics;
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using Dashboard.Drawing;
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using Dashboard.Pal;
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using OpenTK.Graphics.OpenGL;
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namespace Dashboard.OpenGL.Drawing
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{
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public class DirectRendering : IDirectRendering
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{
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public DeviceContext Context { get; private set; } = null!;
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public string DriverName { get; } = "Dashboard OpenGL";
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public string DriverVendor { get; } = "Dashboard";
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public Version DriverVersion { get; } = new Version(0, 1);
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IContextBase IContextExtensionBase.Context => Context;
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private int _vao = -1;
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public void Dispose()
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{
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GC.SuppressFinalize(this);
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}
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public void Require(DeviceContext context) => Context = context;
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public void Require(IContextBase context) => Require((DeviceContext)context);
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public void Begin()
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{
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if (_vao == -1)
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{
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GL.CreateVertexArray(out _vao);
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}
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}
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public void End()
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{
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}
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public IShader CreatePipeline<T>(T createInfo) where T : IShaderCreateInfo
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{
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int program = createInfo switch
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{
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GlslShaderCreateInfo glsl => glsl.CreateProgram(),
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GlslComputeShaderCreateInfo compute => compute.CreateProgram(),
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SpirvShaderCreateInfo spirv => spirv.CreateProgram(),
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_ => throw new Exception($"Unsupported shader pipeline type {createInfo.GetType()}."),
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};
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return new GLShader((GLDeviceContext)Context, program);
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}
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public IBuffer CreateBuffer(BufferAccessPattern pattern, long size)
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{
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return GLBuffer.Create((GLDeviceContext)Context, pattern, size);
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}
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public void Draw(DrawCall drawCall)
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{
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Vector2 size = Context.FramebufferSize;
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drawCall.SetAll(size, _vao, false);
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if (drawCall.ElementBuffer is null)
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{
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GL.DrawArrays(drawCall.Primitive.OpenGL, drawCall.First, drawCall.Count);
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}
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else if (drawCall.BaseVertex == 0)
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{
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GL.DrawElements(drawCall.Primitive.OpenGL, drawCall.Count, drawCall.IndexType.OpenGL, (nint)drawCall.Offset);
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}
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else
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{
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GL.DrawElementsBaseVertex(drawCall.Primitive.OpenGL, drawCall.Count, drawCall.IndexType.OpenGL, (nint)drawCall.Offset, drawCall.BaseVertex);
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}
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}
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}
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}
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