private void LoadGLEntryPoints()
{
/* Basic entry points. If you don't have these, you're screwed. */
try
{
INTERNAL_glGetString = (GetString) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetString"),
typeof(GetString)
);
glGetIntegerv = (GetIntegerv) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetIntegerv"),
typeof(GetIntegerv)
);
glEnable = (Enable) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glEnable"),
typeof(Enable)
);
glDisable = (Disable) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDisable"),
typeof(Disable)
);
glViewport = (G_Viewport) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glViewport"),
typeof(G_Viewport)
);
glDepthRange = (DepthRange) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDepthRange"),
typeof(DepthRange)
);
glScissor = (Scissor) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glScissor"),
typeof(Scissor)
);
glBlendColor = (BlendColor) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBlendColor"),
typeof(BlendColor)
);
glBlendFuncSeparate = (BlendFuncSeparate) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBlendFuncSeparate"),
typeof(BlendFuncSeparate)
);
glBlendEquationSeparate = (BlendEquationSeparate) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBlendEquationSeparate"),
typeof(BlendEquationSeparate)
);
glColorMask = (ColorMask) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glColorMask"),
typeof(ColorMask)
);
glDepthMask = (DepthMask) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDepthMask"),
typeof(DepthMask)
);
glDepthFunc = (DepthFunc) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDepthFunc"),
typeof(DepthFunc)
);
glStencilMask = (StencilMask) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilMask"),
typeof(StencilMask)
);
glStencilFuncSeparate = (StencilFuncSeparate) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilFuncSeparate"),
typeof(StencilFuncSeparate)
);
glStencilOpSeparate = (StencilOpSeparate) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilOpSeparate"),
typeof(StencilOpSeparate)
);
glStencilFunc = (StencilFunc) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilFunc"),
typeof(StencilFunc)
);
glStencilOp = (StencilOp) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilOp"),
typeof(StencilOp)
);
glCullFace = (CullFace) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCullFace"),
typeof(CullFace)
);
glFrontFace = (FrontFace) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glFrontFace"),
typeof(FrontFace)
);
glPolygonMode = (PolygonMode) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glPolygonMode"),
typeof(PolygonMode)
);
glPolygonOffset = (PolygonOffset) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glPolygonOffset"),
typeof(PolygonOffset)
);
glGenTextures = (GenTextures) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenTextures"),
typeof(GenTextures)
);
glDeleteTextures = (DeleteTextures) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteTextures"),
typeof(DeleteTextures)
);
glBindTexture = (G_BindTexture) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBindTexture"),
typeof(G_BindTexture)
);
glTexImage2D = (TexImage2D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexImage2D"),
typeof(TexImage2D)
);
glTexSubImage2D = (TexSubImage2D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexSubImage2D"),
typeof(TexSubImage2D)
);
glCompressedTexImage2D = (CompressedTexImage2D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCompressedTexImage2D"),
typeof(CompressedTexImage2D)
);
glCompressedTexSubImage2D = (CompressedTexSubImage2D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCompressedTexSubImage2D"),
typeof(CompressedTexSubImage2D)
);
glTexImage3D = (TexImage3D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexImage3D"),
typeof(TexImage3D)
);
glTexSubImage3D = (TexSubImage3D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexSubImage3D"),
typeof(TexSubImage3D)
);
glGetTexImage = (GetTexImage) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetTexImage"),
typeof(GetTexImage)
);
glTexParameteri = (TexParameteri) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexParameteri"),
typeof(TexParameteri)
);
glTexParameterf = (TexParameterf) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexParameterf"),
typeof(TexParameterf)
);
glActiveTexture = (ActiveTexture) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glActiveTexture"),
typeof(ActiveTexture)
);
glPixelStorei = (PixelStorei) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glPixelStorei"),
typeof(PixelStorei)
);
glGenBuffers = (GenBuffers) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenBuffers"),
typeof(GenBuffers)
);
glDeleteBuffers = (DeleteBuffers) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteBuffers"),
typeof(DeleteBuffers)
);
glBindBuffer = (BindBuffer) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBindBuffer"),
typeof(BindBuffer)
);
glBufferData = (BufferData) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBufferData"),
typeof(BufferData)
);
glBufferSubData = (BufferSubData) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBufferSubData"),
typeof(BufferSubData)
);
glMapBuffer = (MapBuffer) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glMapBuffer"),
typeof(MapBuffer)
);
glUnmapBuffer = (UnmapBuffer) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glUnmapBuffer"),
typeof(UnmapBuffer)
);
glClearColor = (ClearColor) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClearColor"),
typeof(ClearColor)
);
glClearDepth = (ClearDepth) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClearDepth"),
typeof(ClearDepth)
);
glClearStencil = (ClearStencil) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClearStencil"),
typeof(ClearStencil)
);
glClear = (G_Clear) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClear"),
typeof(G_Clear)
);
glDrawBuffers = (DrawBuffers) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawBuffers"),
typeof(DrawBuffers)
);
glReadPixels = (ReadPixels) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glReadPixels"),
typeof(ReadPixels)
);
glVertexAttribPointer = (VertexAttribPointer) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glVertexAttribPointer"),
typeof(VertexAttribPointer)
);
glEnableVertexAttribArray = (EnableVertexAttribArray) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glEnableVertexAttribArray"),
typeof(EnableVertexAttribArray)
);
glDisableVertexAttribArray = (DisableVertexAttribArray) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDisableVertexAttribArray"),
typeof(DisableVertexAttribArray)
);
glDrawRangeElements = (DrawRangeElements) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawRangeElements"),
typeof(DrawRangeElements)
);
glDrawArrays = (DrawArrays) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawArrays"),
typeof(DrawArrays)
);
glGenQueries = (GenQueries) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenQueries"),
typeof(GenQueries)
);
glDeleteQueries = (DeleteQueries) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteQueries"),
typeof(DeleteQueries)
);
glBeginQuery = (BeginQuery) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBeginQuery"),
typeof(BeginQuery)
);
glEndQuery = (EndQuery) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glEndQuery"),
typeof(EndQuery)
);
glGetQueryObjectiv = (GetQueryObjectiv) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetQueryObjectiv"),
typeof(GetQueryObjectiv)
);
}
catch
{
throw new NoSuitableGraphicsDeviceException("OpenGL 2.1 support is required!");
}
/* ARB_framebuffer_object. We're flexible, but not _that_ flexible. */
try
{
glGenFramebuffers = (GenFramebuffers) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glGenFramebuffers"),
typeof(GenFramebuffers)
);
glDeleteFramebuffers = (DeleteFramebuffers) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glDeleteFramebuffers"),
typeof(DeleteFramebuffers)
);
glBindFramebuffer = (G_BindFramebuffer) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glBindFramebuffer"),
typeof(G_BindFramebuffer)
);
glFramebufferTexture2D = (FramebufferTexture2D) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glFramebufferTexture2D"),
typeof(FramebufferTexture2D)
);
glFramebufferRenderbuffer = (FramebufferRenderbuffer) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glFramebufferRenderbuffer"),
typeof(FramebufferRenderbuffer)
);
glGenerateMipmap = (GenerateMipmap) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glGenerateMipmap"),
typeof(GenerateMipmap)
);
#if !DISABLE_FAUXBACKBUFFER
glBlitFramebuffer = (BlitFramebuffer) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glBlitFramebuffer"),
typeof(BlitFramebuffer)
);
#endif
glGenRenderbuffers = (GenRenderbuffers) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glGenRenderbuffers"),
typeof(GenRenderbuffers)
);
glDeleteRenderbuffers = (DeleteRenderbuffers) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glDeleteRenderbuffers"),
typeof(DeleteRenderbuffers)
);
glBindRenderbuffer = (BindRenderbuffer) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glBindRenderbuffer"),
typeof(BindRenderbuffer)
);
glRenderbufferStorage = (RenderbufferStorage) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glRenderbufferStorage"),
typeof(RenderbufferStorage)
);
}
catch
{
throw new NoSuitableGraphicsDeviceException("OpenGL framebuffer support is required!");
}
/* ARB_instanced_arrays/ARB_draw_instanced are almost optional. */
SupportsHardwareInstancing = true;
try
{
glVertexAttribDivisor = (VertexAttribDivisor) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glVertexAttribDivisor"),
typeof(VertexAttribDivisor)
);
glDrawElementsInstanced = (DrawElementsInstanced) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawElementsInstanced"),
typeof(DrawElementsInstanced)
);
}
catch
{
SupportsHardwareInstancing = false;
}
/* EXT_draw_buffers2 is probably used by nobody. */
try
{
glColorMaskIndexedEXT = (ColorMaskIndexedEXT) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glColorMaskIndexedEXT"),
typeof(ColorMaskIndexedEXT)
);
}
catch
{
// FIXME: SupportsIndependentWriteMasks? -flibit
}
/* EXT_framebuffer_multisample/ARB_texture_multisample is glitter -flibit */
supportsMultisampling = true;
try
{
glRenderbufferStorageMultisample = (RenderbufferStorageMultisample) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glRenderbufferStorageMultisample"),
typeof(RenderbufferStorageMultisample)
);
glSampleMaski = (SampleMaski) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glSampleMaski"),
typeof(SampleMaski)
);
}
catch
{
supportsMultisampling = false;
}
if (useCoreProfile)
{
try
{
INTERNAL_glGetStringi = (GetStringi) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetStringi"),
typeof(GetStringi)
);
glGenVertexArrays = (GenVertexArrays) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenVertexArrays"),
typeof(GenVertexArrays)
);
glDeleteVertexArrays = (DeleteVertexArrays) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteVertexArrays"),
typeof(DeleteVertexArrays)
);
glBindVertexArray = (BindVertexArray) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBindVertexArray"),
typeof(BindVertexArray)
);
}
catch
{
throw new NoSuitableGraphicsDeviceException("OpenGL 3.2 support is required!");
}
}
#if DEBUG
/* ARB_debug_output, for debug contexts */
IntPtr messageCallback = SDL.SDL_GL_GetProcAddress("glDebugMessageCallbackARB");
IntPtr messageControl = SDL.SDL_GL_GetProcAddress("glDebugMessageControlARB");
if (messageCallback == IntPtr.Zero || messageControl == IntPtr.Zero)
{
System.Console.WriteLine("ARB_debug_output not supported!");
}
else
{
glDebugMessageCallbackARB = (DebugMessageCallback) Marshal.GetDelegateForFunctionPointer(
messageCallback,
typeof(DebugMessageCallback)
);
glDebugMessageControlARB = (DebugMessageControl) Marshal.GetDelegateForFunctionPointer(
messageControl,
typeof(DebugMessageControl)
);
glDebugMessageControlARB(
GLenum.GL_DONT_CARE,
GLenum.GL_DONT_CARE,
GLenum.GL_DONT_CARE,
0,
IntPtr.Zero,
true
);
glDebugMessageControlARB(
GLenum.GL_DONT_CARE,
GLenum.GL_DEBUG_TYPE_OTHER_ARB,
GLenum.GL_DEBUG_SEVERITY_LOW_ARB,
0,
IntPtr.Zero,
false
);
glDebugMessageControlARB(
GLenum.GL_DONT_CARE,
GLenum.GL_DEBUG_TYPE_OTHER_ARB,
GLenum.GL_DEBUG_SEVERITY_NOTIFICATION_ARB,
0,
IntPtr.Zero,
false
);
glDebugMessageCallbackARB(DebugCall, IntPtr.Zero);
}
/* GREMEDY_string_marker, for apitrace */
IntPtr stringMarkerCallback = SDL.SDL_GL_GetProcAddress("glStringMarkerGREMEDY");
if (stringMarkerCallback == IntPtr.Zero)
{
System.Console.WriteLine("GREMEDY_string_marker not supported!");
}
else
{
glStringMarkerGREMEDY = (StringMarkerGREMEDY) Marshal.GetDelegateForFunctionPointer(
stringMarkerCallback,
typeof(StringMarkerGREMEDY)
);
}
#endif
}
/* END STRING MARKER FUNCTIONS */
#endif
private void LoadGLEntryPoints()
{
/* Basic entry points. If you don't have these, you're screwed. */
try
{
INTERNAL_glGetString = (GetString)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetString"),
typeof(GetString)
);
glGetIntegerv = (GetIntegerv)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetIntegerv"),
typeof(GetIntegerv)
);
glEnable = (Enable)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glEnable"),
typeof(Enable)
);
glDisable = (Disable)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDisable"),
typeof(Disable)
);
glViewport = (G_Viewport)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glViewport"),
typeof(G_Viewport)
);
glDepthRange = (DepthRange)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDepthRange"),
typeof(DepthRange)
);
glScissor = (Scissor)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glScissor"),
typeof(Scissor)
);
glBlendColor = (BlendColor)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBlendColor"),
typeof(BlendColor)
);
glBlendFuncSeparate = (BlendFuncSeparate)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBlendFuncSeparate"),
typeof(BlendFuncSeparate)
);
glBlendEquationSeparate = (BlendEquationSeparate)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBlendEquationSeparate"),
typeof(BlendEquationSeparate)
);
glColorMask = (ColorMask)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glColorMask"),
typeof(ColorMask)
);
glDepthMask = (DepthMask)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDepthMask"),
typeof(DepthMask)
);
glDepthFunc = (DepthFunc)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDepthFunc"),
typeof(DepthFunc)
);
glStencilMask = (StencilMask)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilMask"),
typeof(StencilMask)
);
glStencilFuncSeparate = (StencilFuncSeparate)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilFuncSeparate"),
typeof(StencilFuncSeparate)
);
glStencilOpSeparate = (StencilOpSeparate)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilOpSeparate"),
typeof(StencilOpSeparate)
);
glStencilFunc = (StencilFunc)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilFunc"),
typeof(StencilFunc)
);
glStencilOp = (StencilOp)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilOp"),
typeof(StencilOp)
);
glCullFace = (CullFace)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCullFace"),
typeof(CullFace)
);
glFrontFace = (FrontFace)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glFrontFace"),
typeof(FrontFace)
);
glPolygonMode = (PolygonMode)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glPolygonMode"),
typeof(PolygonMode)
);
glPolygonOffset = (PolygonOffset)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glPolygonOffset"),
typeof(PolygonOffset)
);
glGenTextures = (GenTextures)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenTextures"),
typeof(GenTextures)
);
glDeleteTextures = (DeleteTextures)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteTextures"),
typeof(DeleteTextures)
);
glBindTexture = (G_BindTexture)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBindTexture"),
typeof(G_BindTexture)
);
glTexImage2D = (TexImage2D)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexImage2D"),
typeof(TexImage2D)
);
glTexSubImage2D = (TexSubImage2D)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexSubImage2D"),
typeof(TexSubImage2D)
);
glCompressedTexImage2D = (CompressedTexImage2D)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCompressedTexImage2D"),
typeof(CompressedTexImage2D)
);
glCompressedTexSubImage2D = (CompressedTexSubImage2D)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCompressedTexSubImage2D"),
typeof(CompressedTexSubImage2D)
);
glTexImage3D = (TexImage3D)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexImage3D"),
typeof(TexImage3D)
);
glTexSubImage3D = (TexSubImage3D)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexSubImage3D"),
typeof(TexSubImage3D)
);
glGetTexImage = (GetTexImage)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetTexImage"),
typeof(GetTexImage)
);
glTexParameteri = (TexParameteri)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexParameteri"),
typeof(TexParameteri)
);
glTexParameterf = (TexParameterf)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexParameterf"),
typeof(TexParameterf)
);
glActiveTexture = (ActiveTexture)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glActiveTexture"),
typeof(ActiveTexture)
);
glPixelStorei = (PixelStorei)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glPixelStorei"),
typeof(PixelStorei)
);
glGenBuffers = (GenBuffers)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenBuffers"),
typeof(GenBuffers)
);
glDeleteBuffers = (DeleteBuffers)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteBuffers"),
typeof(DeleteBuffers)
);
glBindBuffer = (BindBuffer)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBindBuffer"),
typeof(BindBuffer)
);
glBufferData = (BufferData)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBufferData"),
typeof(BufferData)
);
glBufferSubData = (BufferSubData)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBufferSubData"),
typeof(BufferSubData)
);
glMapBuffer = (MapBuffer)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glMapBuffer"),
typeof(MapBuffer)
);
glUnmapBuffer = (UnmapBuffer)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glUnmapBuffer"),
typeof(UnmapBuffer)
);
glClearColor = (ClearColor)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClearColor"),
typeof(ClearColor)
);
glClearDepth = (ClearDepth)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClearDepth"),
typeof(ClearDepth)
);
glClearStencil = (ClearStencil)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClearStencil"),
typeof(ClearStencil)
);
glClear = (G_Clear)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClear"),
typeof(G_Clear)
);
glDrawBuffers = (DrawBuffers)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawBuffers"),
typeof(DrawBuffers)
);
glReadPixels = (ReadPixels)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glReadPixels"),
typeof(ReadPixels)
);
glDrawRangeElements = (DrawRangeElements)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawRangeElements"),
typeof(DrawRangeElements)
);
glDrawArrays = (DrawArrays)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawArrays"),
typeof(DrawArrays)
);
glGenQueries = (GenQueries)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenQueries"),
typeof(GenQueries)
);
glDeleteQueries = (DeleteQueries)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteQueries"),
typeof(DeleteQueries)
);
glBeginQuery = (BeginQuery)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBeginQuery"),
typeof(BeginQuery)
);
glEndQuery = (EndQuery)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glEndQuery"),
typeof(EndQuery)
);
glGetQueryObjectiv = (GetQueryObjectiv)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetQueryObjectiv"),
typeof(GetQueryObjectiv)
);
}
catch
{
throw new NoSuitableGraphicsDeviceException("OpenGL 2.1 support is required!");
}
/* ARB_framebuffer_object. We're flexible, but not _that_ flexible. */
try
{
glGenFramebuffers = (GenFramebuffers)Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glGenFramebuffers"),
typeof(GenFramebuffers)
);
glDeleteFramebuffers = (DeleteFramebuffers)Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glDeleteFramebuffers"),
typeof(DeleteFramebuffers)
);
glBindFramebuffer = (G_BindFramebuffer)Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glBindFramebuffer"),
typeof(G_BindFramebuffer)
);
glFramebufferTexture2D = (FramebufferTexture2D)Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glFramebufferTexture2D"),
typeof(FramebufferTexture2D)
);
glFramebufferRenderbuffer = (FramebufferRenderbuffer)Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glFramebufferRenderbuffer"),
typeof(FramebufferRenderbuffer)
);
glGenerateMipmap = (GenerateMipmap)Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glGenerateMipmap"),
typeof(GenerateMipmap)
);
#if !DISABLE_FAUXBACKBUFFER
glBlitFramebuffer = (BlitFramebuffer)Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glBlitFramebuffer"),
typeof(BlitFramebuffer)
);
#endif
glGenRenderbuffers = (GenRenderbuffers)Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glGenRenderbuffers"),
typeof(GenRenderbuffers)
);
glDeleteRenderbuffers = (DeleteRenderbuffers)Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glDeleteRenderbuffers"),
typeof(DeleteRenderbuffers)
);
glBindRenderbuffer = (BindRenderbuffer)Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glBindRenderbuffer"),
typeof(BindRenderbuffer)
);
glRenderbufferStorage = (RenderbufferStorage)Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glRenderbufferStorage"),
typeof(RenderbufferStorage)
);
}
catch
{
throw new NoSuitableGraphicsDeviceException("OpenGL framebuffer support is required!");
}
/* ARB_instanced_arrays/ARB_draw_instanced are almost optional.
* While we do not directly call glVertexAttribDivisor ourselves,
* we still need to check for ARB_instanced_arrays support.
* -flibit
*/
SupportsHardwareInstancing = SDL.SDL_GL_GetProcAddress("glVertexAttribDivisor") != IntPtr.Zero;
try
{
glDrawElementsInstanced = (DrawElementsInstanced)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawElementsInstanced"),
typeof(DrawElementsInstanced)
);
}
catch
{
SupportsHardwareInstancing = false;
}
/* EXT_draw_buffers2 is probably used by nobody. */
try
{
glColorMaskIndexedEXT = (ColorMaskIndexedEXT)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glColorMaskIndexedEXT"),
typeof(ColorMaskIndexedEXT)
);
}
catch
{
// FIXME: SupportsIndependentWriteMasks? -flibit
}
/* EXT_framebuffer_multisample/ARB_texture_multisample is glitter -flibit */
supportsMultisampling = true;
try
{
glRenderbufferStorageMultisample = (RenderbufferStorageMultisample)Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glRenderbufferStorageMultisample"),
typeof(RenderbufferStorageMultisample)
);
glSampleMaski = (SampleMaski)Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glSampleMaski"),
typeof(SampleMaski)
);
}
catch
{
supportsMultisampling = false;
}
#if DEBUG
/* ARB_debug_output, for debug contexts */
IntPtr messageCallback = SDL.SDL_GL_GetProcAddress("glDebugMessageCallbackARB");
IntPtr messageControl = SDL.SDL_GL_GetProcAddress("glDebugMessageControlARB");
if (messageCallback == IntPtr.Zero || messageControl == IntPtr.Zero)
{
System.Console.WriteLine("ARB_debug_output not supported!");
}
else
{
glDebugMessageCallbackARB = (DebugMessageCallback)Marshal.GetDelegateForFunctionPointer(
messageCallback,
typeof(DebugMessageCallback)
);
glDebugMessageControlARB = (DebugMessageControl)Marshal.GetDelegateForFunctionPointer(
messageControl,
typeof(DebugMessageControl)
);
glDebugMessageControlARB(
GLenum.GL_DONT_CARE,
GLenum.GL_DONT_CARE,
GLenum.GL_DONT_CARE,
0,
IntPtr.Zero,
true
);
glDebugMessageControlARB(
GLenum.GL_DONT_CARE,
GLenum.GL_DEBUG_TYPE_OTHER_ARB,
GLenum.GL_DEBUG_SEVERITY_LOW_ARB,
0,
IntPtr.Zero,
false
);
glDebugMessageControlARB(
GLenum.GL_DONT_CARE,
GLenum.GL_DEBUG_TYPE_OTHER_ARB,
GLenum.GL_DEBUG_SEVERITY_NOTIFICATION_ARB,
0,
IntPtr.Zero,
false
);
glDebugMessageCallbackARB(DebugCall, IntPtr.Zero);
}
/* GREMEDY_string_marker, for apitrace */
IntPtr stringMarkerCallback = SDL.SDL_GL_GetProcAddress("glStringMarkerGREMEDY");
if (stringMarkerCallback == IntPtr.Zero)
{
System.Console.WriteLine("GREMEDY_string_marker not supported!");
}
else
{
glStringMarkerGREMEDY = (StringMarkerGREMEDY)Marshal.GetDelegateForFunctionPointer(
stringMarkerCallback,
typeof(StringMarkerGREMEDY)
);
}
#endif
}
/* END STRING MARKER FUNCTIONS */
#endif
private void LoadGLEntryPoints()
{
string baseErrorString;
if (useES2)
{
baseErrorString = "OpenGL ES 2.0";
}
else
{
baseErrorString = "OpenGL 2.1";
}
baseErrorString += " support is required!";
/* Basic entry points. If you don't have these, you're screwed. */
try
{
INTERNAL_glGetString = (GetString) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetString"),
typeof(GetString)
);
glGetIntegerv = (GetIntegerv) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetIntegerv"),
typeof(GetIntegerv)
);
glEnable = (Enable) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glEnable"),
typeof(Enable)
);
glDisable = (Disable) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDisable"),
typeof(Disable)
);
glViewport = (G_Viewport) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glViewport"),
typeof(G_Viewport)
);
glScissor = (Scissor) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glScissor"),
typeof(Scissor)
);
glBlendColor = (BlendColor) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBlendColor"),
typeof(BlendColor)
);
glBlendFuncSeparate = (BlendFuncSeparate) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBlendFuncSeparate"),
typeof(BlendFuncSeparate)
);
glBlendEquationSeparate = (BlendEquationSeparate) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBlendEquationSeparate"),
typeof(BlendEquationSeparate)
);
glColorMask = (ColorMask) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glColorMask"),
typeof(ColorMask)
);
glDepthMask = (DepthMask) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDepthMask"),
typeof(DepthMask)
);
glDepthFunc = (DepthFunc) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDepthFunc"),
typeof(DepthFunc)
);
glStencilMask = (StencilMask) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilMask"),
typeof(StencilMask)
);
glStencilFuncSeparate = (StencilFuncSeparate) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilFuncSeparate"),
typeof(StencilFuncSeparate)
);
glStencilOpSeparate = (StencilOpSeparate) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilOpSeparate"),
typeof(StencilOpSeparate)
);
glStencilFunc = (StencilFunc) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilFunc"),
typeof(StencilFunc)
);
glStencilOp = (StencilOp) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilOp"),
typeof(StencilOp)
);
glFrontFace = (FrontFace) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glFrontFace"),
typeof(FrontFace)
);
glPolygonOffset = (PolygonOffset) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glPolygonOffset"),
typeof(PolygonOffset)
);
glGenTextures = (GenTextures) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenTextures"),
typeof(GenTextures)
);
glDeleteTextures = (DeleteTextures) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteTextures"),
typeof(DeleteTextures)
);
glBindTexture = (G_BindTexture) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBindTexture"),
typeof(G_BindTexture)
);
glTexImage2D = (TexImage2D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexImage2D"),
typeof(TexImage2D)
);
glTexSubImage2D = (TexSubImage2D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexSubImage2D"),
typeof(TexSubImage2D)
);
glCompressedTexImage2D = (CompressedTexImage2D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCompressedTexImage2D"),
typeof(CompressedTexImage2D)
);
glCompressedTexSubImage2D = (CompressedTexSubImage2D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCompressedTexSubImage2D"),
typeof(CompressedTexSubImage2D)
);
glTexParameteri = (TexParameteri) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexParameteri"),
typeof(TexParameteri)
);
glTexParameterf = (TexParameterf) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexParameterf"),
typeof(TexParameterf)
);
glActiveTexture = (ActiveTexture) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glActiveTexture"),
typeof(ActiveTexture)
);
glPixelStorei = (PixelStorei) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glPixelStorei"),
typeof(PixelStorei)
);
glGenBuffers = (GenBuffers) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenBuffers"),
typeof(GenBuffers)
);
glDeleteBuffers = (DeleteBuffers) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteBuffers"),
typeof(DeleteBuffers)
);
glBindBuffer = (BindBuffer) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBindBuffer"),
typeof(BindBuffer)
);
glBufferData = (BufferData) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBufferData"),
typeof(BufferData)
);
glBufferSubData = (BufferSubData) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBufferSubData"),
typeof(BufferSubData)
);
glClearColor = (ClearColor) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClearColor"),
typeof(ClearColor)
);
glClearStencil = (ClearStencil) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClearStencil"),
typeof(ClearStencil)
);
glClear = (G_Clear) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClear"),
typeof(G_Clear)
);
glDrawBuffers = (DrawBuffers) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawBuffers"),
typeof(DrawBuffers)
);
glReadPixels = (ReadPixels) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glReadPixels"),
typeof(ReadPixels)
);
glVertexAttribPointer = (VertexAttribPointer) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glVertexAttribPointer"),
typeof(VertexAttribPointer)
);
glEnableVertexAttribArray = (EnableVertexAttribArray) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glEnableVertexAttribArray"),
typeof(EnableVertexAttribArray)
);
glDisableVertexAttribArray = (DisableVertexAttribArray) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDisableVertexAttribArray"),
typeof(DisableVertexAttribArray)
);
glDrawArrays = (DrawArrays) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawArrays"),
typeof(DrawArrays)
);
}
catch
{
throw new NoSuitableGraphicsDeviceException(baseErrorString);
}
/* ARB_draw_elements_base_vertex is ideal! */
IntPtr ep = SDL.SDL_GL_GetProcAddress("glDrawRangeElementsBaseVertex");
supportsBaseVertex = ep != IntPtr.Zero;
if (supportsBaseVertex)
{
glDrawRangeElementsBaseVertex = (DrawRangeElementsBaseVertex) Marshal.GetDelegateForFunctionPointer(
ep,
typeof(DrawRangeElementsBaseVertex)
);
glDrawRangeElements = (DrawRangeElements) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawRangeElements"),
typeof(DrawRangeElements)
);
}
else
{
/* DrawRangeElements is better, but some ES2 targets don't have it. */
ep = SDL.SDL_GL_GetProcAddress("glDrawRangeElements");
if (ep != IntPtr.Zero)
{
glDrawRangeElements = (DrawRangeElements) Marshal.GetDelegateForFunctionPointer(
ep,
typeof(DrawRangeElements)
);
glDrawRangeElementsBaseVertex = DrawRangeElementsNoBase;
}
else
{
ep = SDL.SDL_GL_GetProcAddress("glDrawElements");
if (ep == IntPtr.Zero)
{
throw new NoSuitableGraphicsDeviceException(baseErrorString);
}
glDrawElements = (DrawElements) Marshal.GetDelegateForFunctionPointer(
ep,
typeof(DrawElements)
);
glDrawRangeElements = DrawRangeElementsUnchecked;
glDrawRangeElementsBaseVertex = DrawRangeElementsNoBaseUnchecked;
}
}
/* These functions are NOT supported in ES.
* NVIDIA or desktop ES might, but real scenarios where you need ES
* will certainly not have these.
* -flibit
*/
if (useES2)
{
ep = SDL.SDL_GL_GetProcAddress("glPolygonMode");
if (ep != IntPtr.Zero)
{
glPolygonMode = (PolygonMode) Marshal.GetDelegateForFunctionPointer(
ep,
typeof(PolygonMode)
);
}
else
{
glPolygonMode = PolygonModeESError;
}
ep = SDL.SDL_GL_GetProcAddress("glGetTexImage");
if (ep != IntPtr.Zero)
{
glGetTexImage = (GetTexImage) Marshal.GetDelegateForFunctionPointer(
ep,
typeof(GetTexImage)
);
}
else
{
glGetTexImage = GetTexImageESError;
}
ep = SDL.SDL_GL_GetProcAddress("glGetBufferSubData");
if (ep != IntPtr.Zero)
{
glGetBufferSubData = (GetBufferSubData) Marshal.GetDelegateForFunctionPointer(
ep,
typeof(GetBufferSubData)
);
}
else
{
glGetBufferSubData = GetBufferSubDataESError;
}
}
else
{
try
{
glPolygonMode = (PolygonMode) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glPolygonMode"),
typeof(PolygonMode)
);
glGetTexImage = (GetTexImage) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetTexImage"),
typeof(GetTexImage)
);
glGetBufferSubData = (GetBufferSubData) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetBufferSubData"),
typeof(GetBufferSubData)
);
}
catch
{
throw new NoSuitableGraphicsDeviceException(baseErrorString);
}
}
/* We need _some_ form of depth range, ES... */
IntPtr drPtr = SDL.SDL_GL_GetProcAddress("glDepthRange");
if (drPtr != IntPtr.Zero)
{
glDepthRange = (DepthRange) Marshal.GetDelegateForFunctionPointer(
drPtr,
typeof(DepthRange)
);
}
else
{
drPtr = SDL.SDL_GL_GetProcAddress("glDepthRangef");
if (drPtr == IntPtr.Zero)
{
throw new NoSuitableGraphicsDeviceException(baseErrorString);
}
glDepthRangef = (DepthRangef) Marshal.GetDelegateForFunctionPointer(
drPtr,
typeof(DepthRangef)
);
glDepthRange = DepthRangeFloat;
}
drPtr = SDL.SDL_GL_GetProcAddress("glClearDepth");
if (drPtr != IntPtr.Zero)
{
glClearDepth = (ClearDepth) Marshal.GetDelegateForFunctionPointer(
drPtr,
typeof(ClearDepth)
);
}
else
{
drPtr = SDL.SDL_GL_GetProcAddress("glClearDepthf");
if (drPtr == IntPtr.Zero)
{
throw new NoSuitableGraphicsDeviceException(baseErrorString);
}
glClearDepthf = (ClearDepthf) Marshal.GetDelegateForFunctionPointer(
drPtr,
typeof(ClearDepthf)
);
glClearDepth = ClearDepthFloat;
}
/* Silently fail if using GLES. You didn't need these, right...? >_> */
try
{
glTexImage3D = (TexImage3D) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glTexImage3D", "OES"),
typeof(TexImage3D)
);
glTexSubImage3D = (TexSubImage3D) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glTexSubImage3D", "OES"),
typeof(TexSubImage3D)
);
glGenQueries = (GenQueries) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenQueries"),
typeof(GenQueries)
);
glDeleteQueries = (DeleteQueries) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteQueries"),
typeof(DeleteQueries)
);
glBeginQuery = (BeginQuery) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBeginQuery"),
typeof(BeginQuery)
);
glEndQuery = (EndQuery) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glEndQuery"),
typeof(EndQuery)
);
glGetQueryObjectuiv = (GetQueryObjectuiv) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetQueryObjectuiv"),
typeof(GetQueryObjectuiv)
);
}
catch
{
if (useES2)
{
FNAPlatform.Log("Some non-ES functions failed to load. Beware...");
}
else
{
throw new NoSuitableGraphicsDeviceException(baseErrorString);
}
}
/* ARB_framebuffer_object. We're flexible, but not _that_ flexible. */
try
{
glGenFramebuffers = (GenFramebuffers) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glGenFramebuffers"),
typeof(GenFramebuffers)
);
glDeleteFramebuffers = (DeleteFramebuffers) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glDeleteFramebuffers"),
typeof(DeleteFramebuffers)
);
glBindFramebuffer = (G_BindFramebuffer) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glBindFramebuffer"),
typeof(G_BindFramebuffer)
);
glFramebufferTexture2D = (FramebufferTexture2D) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glFramebufferTexture2D"),
typeof(FramebufferTexture2D)
);
glFramebufferRenderbuffer = (FramebufferRenderbuffer) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glFramebufferRenderbuffer"),
typeof(FramebufferRenderbuffer)
);
glGenerateMipmap = (GenerateMipmap) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glGenerateMipmap"),
typeof(GenerateMipmap)
);
glGenRenderbuffers = (GenRenderbuffers) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glGenRenderbuffers"),
typeof(GenRenderbuffers)
);
glDeleteRenderbuffers = (DeleteRenderbuffers) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glDeleteRenderbuffers"),
typeof(DeleteRenderbuffers)
);
glBindRenderbuffer = (BindRenderbuffer) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glBindRenderbuffer"),
typeof(BindRenderbuffer)
);
glRenderbufferStorage = (RenderbufferStorage) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glRenderbufferStorage"),
typeof(RenderbufferStorage)
);
}
catch
{
throw new NoSuitableGraphicsDeviceException("OpenGL framebuffer support is required!");
}
/* EXT_framebuffer_blit (or ARB_framebuffer_object) is needed by the faux-backbuffer. */
supportsFauxBackbuffer = true;
try
{
glBlitFramebuffer = (BlitFramebuffer) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glBlitFramebuffer"),
typeof(BlitFramebuffer)
);
}
catch
{
supportsFauxBackbuffer = false;
}
/* ARB_instanced_arrays/ARB_draw_instanced are almost optional. */
SupportsHardwareInstancing = true;
try
{
glVertexAttribDivisor = (VertexAttribDivisor) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glVertexAttribDivisor"),
typeof(VertexAttribDivisor)
);
/* The likelihood of someone having BaseVertex but not Instanced is 0...? */
if (supportsBaseVertex)
{
glDrawElementsInstancedBaseVertex = (DrawElementsInstancedBaseVertex) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawElementsInstancedBaseVertex"),
typeof(DrawElementsInstancedBaseVertex)
);
}
else
{
glDrawElementsInstanced = (DrawElementsInstanced) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawElementsInstanced"),
typeof(DrawElementsInstanced)
);
glDrawElementsInstancedBaseVertex = DrawElementsInstancedNoBase;
}
}
catch
{
SupportsHardwareInstancing = false;
}
/* EXT_draw_buffers2 is probably used by nobody. */
try
{
glColorMaskIndexedEXT = (ColorMaskIndexedEXT) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glColorMaskIndexedEXT"),
typeof(ColorMaskIndexedEXT)
);
}
catch
{
// FIXME: SupportsIndependentWriteMasks? -flibit
}
/* EXT_framebuffer_multisample/ARB_texture_multisample is glitter -flibit */
supportsMultisampling = true;
try
{
glRenderbufferStorageMultisample = (RenderbufferStorageMultisample) Marshal.GetDelegateForFunctionPointer(
TryGetEPEXT("glRenderbufferStorageMultisample"),
typeof(RenderbufferStorageMultisample)
);
glSampleMaski = (SampleMaski) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glSampleMaski"),
typeof(SampleMaski)
);
}
catch
{
supportsMultisampling = false;
}
if (useCoreProfile)
{
try
{
INTERNAL_glGetStringi = (GetStringi) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetStringi"),
typeof(GetStringi)
);
glGenVertexArrays = (GenVertexArrays) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenVertexArrays"),
typeof(GenVertexArrays)
);
glDeleteVertexArrays = (DeleteVertexArrays) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteVertexArrays"),
typeof(DeleteVertexArrays)
);
glBindVertexArray = (BindVertexArray) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBindVertexArray"),
typeof(BindVertexArray)
);
}
catch
{
throw new NoSuitableGraphicsDeviceException("OpenGL 3.2 support is required!");
}
}
#if DEBUG
/* ARB_debug_output, for debug contexts */
IntPtr messageCallback = SDL.SDL_GL_GetProcAddress("glDebugMessageCallbackARB");
IntPtr messageControl = SDL.SDL_GL_GetProcAddress("glDebugMessageControlARB");
if (messageCallback == IntPtr.Zero || messageControl == IntPtr.Zero)
{
FNAPlatform.Log("ARB_debug_output not supported!");
}
else
{
glDebugMessageCallbackARB = (DebugMessageCallback) Marshal.GetDelegateForFunctionPointer(
messageCallback,
typeof(DebugMessageCallback)
);
glDebugMessageControlARB = (DebugMessageControl) Marshal.GetDelegateForFunctionPointer(
messageControl,
typeof(DebugMessageControl)
);
glDebugMessageControlARB(
GLenum.GL_DONT_CARE,
GLenum.GL_DONT_CARE,
GLenum.GL_DONT_CARE,
0,
IntPtr.Zero,
true
);
glDebugMessageControlARB(
GLenum.GL_DONT_CARE,
GLenum.GL_DEBUG_TYPE_OTHER_ARB,
GLenum.GL_DEBUG_SEVERITY_LOW_ARB,
0,
IntPtr.Zero,
false
);
glDebugMessageControlARB(
GLenum.GL_DONT_CARE,
GLenum.GL_DEBUG_TYPE_OTHER_ARB,
GLenum.GL_DEBUG_SEVERITY_NOTIFICATION_ARB,
0,
IntPtr.Zero,
false
);
glDebugMessageCallbackARB(DebugCall, IntPtr.Zero);
}
/* GREMEDY_string_marker, for apitrace */
IntPtr stringMarkerCallback = SDL.SDL_GL_GetProcAddress("glStringMarkerGREMEDY");
if (stringMarkerCallback == IntPtr.Zero)
{
FNAPlatform.Log("GREMEDY_string_marker not supported!");
}
else
{
glStringMarkerGREMEDY = (StringMarkerGREMEDY) Marshal.GetDelegateForFunctionPointer(
stringMarkerCallback,
typeof(StringMarkerGREMEDY)
);
}
#endif
}
public void LoadGLEntryPoints()
{
/* Basic entry points. If you don't have these, you're screwed. */
try
{
INTERNAL_glGetString = (GetString) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetString"),
typeof(GetString)
);
glGetIntegerv = (GetIntegerv) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetIntegerv"),
typeof(GetIntegerv)
);
glEnable = (Enable) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glEnable"),
typeof(Enable)
);
glDisable = (Disable) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDisable"),
typeof(Disable)
);
glViewport = (G_Viewport) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glViewport"),
typeof(G_Viewport)
);
glDepthRange = (DepthRange) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDepthRange"),
typeof(DepthRange)
);
glScissor = (Scissor) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glScissor"),
typeof(Scissor)
);
glBlendColor = (BlendColor) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBlendColor"),
typeof(BlendColor)
);
glBlendFuncSeparate = (BlendFuncSeparate) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBlendFuncSeparate"),
typeof(BlendFuncSeparate)
);
glBlendEquationSeparate = (BlendEquationSeparate) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBlendEquationSeparate"),
typeof(BlendEquationSeparate)
);
glColorMask = (ColorMask) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glColorMask"),
typeof(ColorMask)
);
glDepthMask = (DepthMask) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDepthMask"),
typeof(DepthMask)
);
glDepthFunc = (DepthFunc) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDepthFunc"),
typeof(DepthFunc)
);
glStencilMask = (StencilMask) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilMask"),
typeof(StencilMask)
);
glStencilFuncSeparate = (StencilFuncSeparate) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilFuncSeparate"),
typeof(StencilFuncSeparate)
);
glStencilOpSeparate = (StencilOpSeparate) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilOpSeparate"),
typeof(StencilOpSeparate)
);
glStencilFunc = (StencilFunc) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilFunc"),
typeof(StencilFunc)
);
glStencilOp = (StencilOp) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glStencilOp"),
typeof(StencilOp)
);
glCullFace = (CullFace) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCullFace"),
typeof(CullFace)
);
glFrontFace = (FrontFace) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glFrontFace"),
typeof(FrontFace)
);
glPolygonMode = (PolygonMode) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glPolygonMode"),
typeof(PolygonMode)
);
glPolygonOffset = (PolygonOffset) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glPolygonOffset"),
typeof(PolygonOffset)
);
glGenTextures = (GenTextures) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenTextures"),
typeof(GenTextures)
);
glDeleteTextures = (DeleteTextures) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteTextures"),
typeof(DeleteTextures)
);
glBindTexture = (G_BindTexture) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBindTexture"),
typeof(G_BindTexture)
);
glTexImage2D = (TexImage2D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexImage2D"),
typeof(TexImage2D)
);
glTexSubImage2D = (TexSubImage2D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexSubImage2D"),
typeof(TexSubImage2D)
);
glCompressedTexImage2D = (CompressedTexImage2D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCompressedTexImage2D"),
typeof(CompressedTexImage2D)
);
glCompressedTexSubImage2D = (CompressedTexSubImage2D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCompressedTexSubImage2D"),
typeof(CompressedTexSubImage2D)
);
glTexImage3D = (TexImage3D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexImage3D"),
typeof(TexImage3D)
);
glTexSubImage3D = (TexSubImage3D) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexSubImage3D"),
typeof(TexSubImage3D)
);
glGetTexImage = (GetTexImage) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetTexImage"),
typeof(GetTexImage)
);
glTexParameteri = (TexParameteri) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexParameteri"),
typeof(TexParameteri)
);
glTexParameterf = (TexParameterf) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glTexParameterf"),
typeof(TexParameterf)
);
glActiveTexture = (ActiveTexture) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glActiveTexture"),
typeof(ActiveTexture)
);
glGetTexLevelParameteriv = (GetTexLevelParameteriv) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetTexLevelParameteriv"),
typeof(GetTexLevelParameteriv)
);
glPixelStorei = (PixelStorei) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glPixelStorei"),
typeof(PixelStorei)
);
glGenBuffers = (GenBuffers) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenBuffers"),
typeof(GenBuffers)
);
glDeleteBuffers = (DeleteBuffers) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteBuffers"),
typeof(DeleteBuffers)
);
glBindBuffer = (BindBuffer) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBindBuffer"),
typeof(BindBuffer)
);
glBufferData = (BufferData) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBufferData"),
typeof(BufferData)
);
glBufferSubData = (BufferSubData) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBufferSubData"),
typeof(BufferSubData)
);
glMapBuffer = (MapBuffer) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glMapBuffer"),
typeof(MapBuffer)
);
glUnmapBuffer = (UnmapBuffer) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glUnmapBuffer"),
typeof(UnmapBuffer)
);
glEnableVertexAttribArray = (EnableVertexAttribArray) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glEnableVertexAttribArray"),
typeof(EnableVertexAttribArray)
);
glDisableVertexAttribArray = (DisableVertexAttribArray) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDisableVertexAttribArray"),
typeof(DisableVertexAttribArray)
);
glVertexAttribPointer = (G_VertexAttribPointer) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glVertexAttribPointer"),
typeof(G_VertexAttribPointer)
);
glClearColor = (ClearColor) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClearColor"),
typeof(ClearColor)
);
glClearDepth = (ClearDepth) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClearDepth"),
typeof(ClearDepth)
);
glClearStencil = (ClearStencil) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClearStencil"),
typeof(ClearStencil)
);
glClear = (G_Clear) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glClear"),
typeof(G_Clear)
);
glDrawBuffers = (DrawBuffers) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawBuffers"),
typeof(DrawBuffers)
);
glReadPixels = (ReadPixels) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glReadPixels"),
typeof(ReadPixels)
);
glDrawRangeElements = (DrawRangeElements) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawRangeElements"),
typeof(DrawRangeElements)
);
glDrawArrays = (DrawArrays) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawArrays"),
typeof(DrawArrays)
);
glGenQueries = (GenQueries) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGenQueries"),
typeof(GenQueries)
);
glDeleteQueries = (DeleteQueries) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteQueries"),
typeof(DeleteQueries)
);
glBeginQuery = (BeginQuery) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBeginQuery"),
typeof(BeginQuery)
);
glEndQuery = (EndQuery) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glEndQuery"),
typeof(EndQuery)
);
glGetQueryObjectiv = (GetQueryObjectiv) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetQueryObjectiv"),
typeof(GetQueryObjectiv)
);
glCreateShader = (CreateShader) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCreateShader"),
typeof(CreateShader)
);
glDeleteShader = (DeleteShader) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteShader"),
typeof(DeleteShader)
);
glShaderSource = (ShaderSource) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glShaderSource"),
typeof(ShaderSource)
);
glCompileShader = (CompileShader) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCompileShader"),
typeof(CompileShader)
);
glCreateProgram = (CreateProgram) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glCreateProgram"),
typeof(CreateProgram)
);
glDeleteProgram = (DeleteProgram) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDeleteProgram"),
typeof(DeleteProgram)
);
glAttachShader = (AttachShader) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glAttachShader"),
typeof(AttachShader)
);
glDetachShader = (DetachShader) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDetachShader"),
typeof(DetachShader)
);
glLinkProgram = (LinkProgram) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glLinkProgram"),
typeof(LinkProgram)
);
glUseProgram = (UseProgram) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glUseProgram"),
typeof(UseProgram)
);
glUniform1i = (Uniform1i) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glUniform1i"),
typeof(Uniform1i)
);
glUniform4fv = (Uniform4fv) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glUniform4fv"),
typeof(Uniform4fv)
);
glGetShaderiv = (GetShaderiv) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetShaderiv"),
typeof(GetShaderiv)
);
glGetProgramiv = (GetProgramiv) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetProgramiv"),
typeof(GetProgramiv)
);
glGetUniformLocation = (GetUniformLocation) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetUniformLocation"),
typeof(GetUniformLocation)
);
glGetAttribLocation = (GetAttribLocation) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetAttribLocation"),
typeof(GetAttribLocation)
);
glBindAttribLocation = (BindAttribLocation) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glBindAttribLocation"),
typeof(BindAttribLocation)
);
glIsShader = (IsShader) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glIsShader"),
typeof(IsShader)
);
glIsProgram = (IsProgram) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glIsProgram"),
typeof(IsProgram)
);
glGetShaderInfoLog = (GetShaderInfoLog) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetShaderInfoLog"),
typeof(GetShaderInfoLog)
);
glGetProgramInfoLog = (GetProgramInfoLog) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glGetProgramInfoLog"),
typeof(GetProgramInfoLog)
);
glFlush = (Flush) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glFlush"),
typeof(Flush)
);
}
catch
{
throw new NoSuitableGraphicsDeviceException("OpenGL 2.1 support is required!");
}
/* ARB_framebuffer_object. We're flexible, but not _that_ flexible. */
try
{
glGenFramebuffers = (GenFramebuffers) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glGenFramebuffers"),
typeof(GenFramebuffers)
);
glDeleteFramebuffers = (DeleteFramebuffers) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glDeleteFramebuffers"),
typeof(DeleteFramebuffers)
);
glBindFramebuffer = (G_BindFramebuffer) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glBindFramebuffer"),
typeof(G_BindFramebuffer)
);
glFramebufferTexture2D = (FramebufferTexture2D) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glFramebufferTexture2D"),
typeof(FramebufferTexture2D)
);
glFramebufferRenderbuffer = (FramebufferRenderbuffer) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glFramebufferRenderbuffer"),
typeof(FramebufferRenderbuffer)
);
#if !DISABLE_FAUXBACKBUFFER
glBlitFramebuffer = (BlitFramebuffer) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glBlitFramebuffer"),
typeof(BlitFramebuffer)
);
#endif
glGenRenderbuffers = (GenRenderbuffers) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glGenRenderbuffers"),
typeof(GenRenderbuffers)
);
glDeleteRenderbuffers = (DeleteRenderbuffers) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glDeleteRenderbuffers"),
typeof(DeleteRenderbuffers)
);
glBindRenderbuffer = (BindRenderbuffer) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glBindRenderbuffer"),
typeof(BindRenderbuffer)
);
glRenderbufferStorage = (RenderbufferStorage) Marshal.GetDelegateForFunctionPointer(
TryGetFramebufferEP("glRenderbufferStorage"),
typeof(RenderbufferStorage)
);
}
catch
{
throw new NoSuitableGraphicsDeviceException("OpenGL framebuffer support is required!");
}
/* ARB_instanced_arrays/ARB_draw_instanced are almost optional. */
SupportsHardwareInstancing = true;
try
{
glVertexAttribDivisor = (VertexAttribDivisor) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glVertexAttribDivisor"),
typeof(VertexAttribDivisor)
);
glDrawElementsInstanced = (DrawElementsInstanced) Marshal.GetDelegateForFunctionPointer(
SDL.SDL_GL_GetProcAddress("glDrawElementsInstanced"),
typeof(DrawElementsInstanced)
);
}
catch
{
SupportsHardwareInstancing = false;
}
#if DEBUG
/* ARB_debug_output, for debug contexts */
IntPtr messageCallback = SDL.SDL_GL_GetProcAddress("glDebugMessageCallbackARB");
IntPtr messageControl = SDL.SDL_GL_GetProcAddress("glDebugMessageControlARB");
if (messageCallback == IntPtr.Zero || messageControl == IntPtr.Zero)
{
System.Console.WriteLine("ARB_debug_output not supported!");
}
else
{
glDebugMessageCallbackARB = (DebugMessageCallback) Marshal.GetDelegateForFunctionPointer(
messageCallback,
typeof(DebugMessageCallback)
);
glDebugMessageControlARB = (DebugMessageControl) Marshal.GetDelegateForFunctionPointer(
messageControl,
typeof(DebugMessageControl)
);
glDebugMessageCallbackARB(DebugCall, IntPtr.Zero);
glDebugMessageControlARB(
GLenum.GL_DONT_CARE,
GLenum.GL_DONT_CARE,
GLenum.GL_DONT_CARE,
0,
IntPtr.Zero,
true
);
glDebugMessageControlARB(
GLenum.GL_DONT_CARE,
GLenum.GL_DEBUG_TYPE_OTHER_ARB,
GLenum.GL_DEBUG_SEVERITY_LOW_ARB,
0,
IntPtr.Zero,
false
);
}
/* GREMEDY_string_marker, for apitrace */
IntPtr stringMarkerCallback = SDL.SDL_GL_GetProcAddress("glStringMarkerGREMEDY");
if (stringMarkerCallback == IntPtr.Zero)
{
System.Console.WriteLine("GREMEDY_string_marker not supported!");
}
else
{
glStringMarkerGREMEDY = (StringMarkerGREMEDY) Marshal.GetDelegateForFunctionPointer(
stringMarkerCallback,
typeof(StringMarkerGREMEDY)
);
}
#endif
}