using System; using System.Runtime.CompilerServices; namespace Quik.OpenGL { public unsafe static partial class GL { private delegate void ActiveTextureProc(GLEnum unit); private delegate void PixelStoreiProc(GLEnum pname, int param); private delegate void PixelStorefProc(GLEnum pname, float param); private delegate void TexImage2DProc(GLEnum target, int level, GLEnum internalFormat, int width, int height, int border, GLEnum format, GLEnum pixelType, void *data); private delegate void TexSubImage2DProc(GLEnum target, int level, int x, int y, int width, int height, GLEnum format, GLEnum pixelType, void *data); private delegate void TexParameteriProc(GLEnum target, GLEnum pname, int value); private delegate void TexParameterfProc(GLEnum target, GLEnum pname, float value); private delegate void TexParameterivProc(GLEnum target, GLEnum pname, int* value); private delegate void TexParameterfvProc(GLEnum target, GLEnum pname, float* value); private delegate void GenerateMipmapProc(GLEnum target); private static GenObjectsProc _genTextures; private static GenObjectsProc _deleteTextures; private static BindSlottedProc _bindTexture; private static ActiveTextureProc _activeTexture; private static PixelStoreiProc _pixelStorei; private static PixelStorefProc _pixelStoref; private static TexImage2DProc _texImage2D; private static TexSubImage2DProc _texSubImage2D; private static TexParameteriProc _texParameteri; private static TexParameterfProc _texParameterf; private static TexParameterivProc _texParameteriv; private static TexParameterfvProc _texParameterfv; private static GenerateMipmapProc _generateMipmap; private static void LoadTexture() { _genTextures = GetProcAddress("glGenTextures"); _deleteTextures = GetProcAddress("glDeleteTextures"); _bindTexture = GetProcAddress("glBindTexture"); _activeTexture = GetProcAddress("glActiveTexture"); _pixelStorei = GetProcAddress("glPixelStorei"); _pixelStoref = GetProcAddress("glPixelStoref"); _texImage2D = GetProcAddress("glTexImage2D"); _texSubImage2D = GetProcAddress("glTexSubImage2D"); _texParameteri = GetProcAddress("glTexParameteri"); _texParameterf = GetProcAddress("glTexParameterf"); _texParameteriv = GetProcAddress("glTexParameteriv"); _texParameterfv = GetProcAddress("glTexParameterfv"); _generateMipmap = GetProcAddress("glGenerateMipmap"); } [MethodImpl(AggressiveInlining)] public static void GenTextures(int count, out int textures) { fixed (int *ptr = &textures) _genTextures(count, ptr); } [MethodImpl(AggressiveInlining)] public static int GenTexture() { GenTextures(1, out int i); return i; } [MethodImpl(AggressiveInlining)] public static void GenTextures(int[] textures) => GenTextures(textures.Length, out textures[0]); [MethodImpl(AggressiveInlining)] public static void DeleteTextures(int count, in int textures) { fixed (int* ptr = &textures) _deleteTextures(count, ptr); } [MethodImpl(AggressiveInlining)] public static void DeleteTexture(int i) => DeleteTextures(1, i); [MethodImpl(AggressiveInlining)] public static void DeleteTextures(int[] textures) => DeleteTextures(textures.Length, in textures[0]); [MethodImpl(AggressiveInlining)] public static void BindTexture(GLEnum target, int texture) => _bindTexture(target, texture); [MethodImpl(AggressiveInlining)] public static void ActiveTexture(GLEnum unit) => _activeTexture(unit); [MethodImpl(AggressiveInlining)] public static void PixelStore(GLEnum pname, int value) => _pixelStorei(pname, value); [MethodImpl(AggressiveInlining)] public static void PixelStore(GLEnum pname, float value) => _pixelStoref(pname, value); [MethodImpl(AggressiveInlining)] public static void TexImage2D(GLEnum target, int level, GLEnum internalFormat, int width, int height, int border, GLEnum format, GLEnum pixelType, IntPtr data) => _texImage2D(target, level, internalFormat, width, height, border, format, pixelType, (void*)data); [MethodImpl(AggressiveInlining)] public static void TexImage2d(GLEnum target, int level, GLEnum internalFormat, int width, int height, int border, GLEnum format, GLEnum pixelType, in T data) where T : unmanaged { fixed(T *ptr = &data) _texImage2D(target, level, internalFormat, width, height, border, format, pixelType, ptr); } [MethodImpl(AggressiveInlining)] public static void TexImage2D(GLEnum target, int level, GLEnum internalFormat, int width, int height, int border, GLEnum format, GLEnum pixelType, T[] data) where T : unmanaged => TexImage2d(target, level, internalFormat, width, height, border, format, pixelType, in data[0]); [MethodImpl(AggressiveInlining)] public static void TexSubImage2D(GLEnum target, int level, int x, int y, int width, int height, GLEnum format, GLEnum pixelType, IntPtr data) => _texSubImage2D(target, level, x, y, width, height,format, pixelType, (void*)data); [MethodImpl(AggressiveInlining)] public static void TexSubImage2d(GLEnum target, int level, int x, int y, int width, int height, GLEnum format, GLEnum pixelType, in T data) where T : unmanaged { fixed(T *ptr = &data) _texSubImage2D(target, level, x, y, width, height, format, pixelType, ptr); } [MethodImpl(AggressiveInlining)] public static void TexSubImage2D(GLEnum target, int level, int x, int y, int width, int height, GLEnum format, GLEnum pixelType, T[] data) where T : unmanaged => TexSubImage2d(target, level, x, y, width, height, format, pixelType, in data[0]); [MethodImpl(AggressiveInlining)] public static void TexParameter(GLEnum target, GLEnum pname, int value) => _texParameteri(target, pname, value); [MethodImpl(AggressiveInlining)] public static void TexParameter(GLEnum target, GLEnum pname, GLEnum value) => _texParameteri(target, pname, (int)value); [MethodImpl(AggressiveInlining)] public static void TexParameter(GLEnum target, GLEnum pname, float value) => _texParameterf(target, pname, value); [MethodImpl(AggressiveInlining)] public static void TexParameter(GLEnum target, GLEnum pname, ref int values) { fixed (int *ptr = &values) _texParameteriv(target, pname, ptr); } [MethodImpl(AggressiveInlining)] public static void TexParameter(GLEnum target, GLEnum pname, int[] values) => TexParameter(target, pname, ref values[0]); [MethodImpl(AggressiveInlining)] public static void TexParameter(GLEnum target, GLEnum pname, ref float values) { fixed (float *ptr = &values) _texParameterfv(target, pname, ptr); } [MethodImpl(AggressiveInlining)] public static void TexParameter(GLEnum target, GLEnum pname, float[] values) => TexParameter(target, pname, ref values[0]); [MethodImpl(AggressiveInlining)] public static void GenerateMipmap(GLEnum target) => _generateMipmap(target); } }