public OpenGLESRenderContext(Window window, OpenGLPlatformContextInfo platformContext)
{
ResourceFactory = new OpenGLESResourceFactory();
RenderCapabilities = new RenderCapabilities(false, false);
_swapBufferFunc = platformContext.SwapBuffer;
GraphicsContext.GetAddressDelegate getAddressFunc = s => platformContext.GetProcAddress(s);
GraphicsContext.GetCurrentContextDelegate getCurrentContextFunc = () => new ContextHandle(platformContext.GetCurrentContext());
_openGLGraphicsContext = new GraphicsContext(new ContextHandle(platformContext.ContextHandle), getAddressFunc, getCurrentContextFunc);
_openGLGraphicsContext.LoadAll();
_defaultFramebuffer = new OpenGLESDefaultFramebuffer(window.Width, window.Height);
OnWindowResized(window.Width, window.Height);
_textureSamplerManager = new OpenGLESTextureSamplerManager();
_maxConstantBufferSlots = GL.GetInteger(GetPName.MaxUniformBufferBindings);
Utilities.CheckLastGLES3Error();
_constantBuffersBySlot = new OpenGLESConstantBuffer[_maxConstantBufferSlots];
_newConstantBuffersBySlot = new OpenGLESConstantBuffer[_maxConstantBufferSlots];
SetInitialStates();
PostContextCreated();
}
private static OpenGLESRenderContext CreateDefaultOpenGLESRenderContext(Sdl2Window window)
{
bool debugContext = false;
debugContext |= s_allowDebugContexts;
if (debugContext)
{
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextFlags, (int)SDL_GLContextFlag.Debug);
}
IntPtr sdlHandle = window.SdlWindowHandle;
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextProfileMask, (int)SDL_GLProfile.ES);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMajorVersion, 3);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMinorVersion, 0);
IntPtr contextHandle = Sdl2Native.SDL_GL_CreateContext(sdlHandle);
Sdl2Native.SDL_GL_MakeCurrent(sdlHandle, contextHandle);
if (contextHandle == IntPtr.Zero)
{
unsafe
{
byte * error = Sdl2Native.SDL_GetError();
string errorString = Utilities.GetString(error);
throw new InvalidOperationException("Unable to create GL Context: " + errorString);
}
}
Sdl2Native.SDL_GL_MakeCurrent(sdlHandle, contextHandle);
OpenGLPlatformContextInfo ci = new OpenGLPlatformContextInfo(
contextHandle,
Sdl2Native.SDL_GL_GetProcAddress,
Sdl2Native.SDL_GL_GetCurrentContext,
() => Sdl2Native.SDL_GL_SwapWindow(sdlHandle));
var rc = new OpenGLESRenderContext(window, ci);
if (debugContext)
{
rc.EnableDebugCallback(OpenTK.Graphics.ES30.DebugSeverity.DebugSeverityNotification);
}
return(rc);
}
public OpenGLRenderContext(Window window, OpenGLPlatformContextInfo platformContext)
{
_resourceFactory = new OpenGLResourceFactory();
RenderCapabilities = new RenderCapabilities(true, true);
_swapBufferFunc = platformContext.SwapBuffer;
GraphicsContext.GetAddressDelegate getAddressFunc = s => platformContext.GetProcAddress(s);
GraphicsContext.GetCurrentContextDelegate getCurrentContextFunc = () => new ContextHandle(platformContext.GetCurrentContext());
_openGLGraphicsContext = new GraphicsContext(new ContextHandle(platformContext.ContextHandle), getAddressFunc, getCurrentContextFunc);
_openGLGraphicsContext.LoadAll();
// NOTE: I am binding a single VAO globally.
_vertexArrayID = GL.GenVertexArray();
GL.BindVertexArray(_vertexArrayID);
_defaultFramebuffer = new OpenGLDefaultFramebuffer(window.Width, window.Height);
OnWindowResized(window.Width, window.Height);
SetInitialStates();
PostContextCreated();
int extensionCount = GL.GetInteger(GetPName.NumExtensions);
HashSet <string> extensions = new HashSet <string>();
for (int i = 0; i < extensionCount; i++)
{
extensions.Add(GL.GetString(StringNameIndexed.Extensions, i));
}
_extensions = new OpenGLExtensions(extensions);
_textureSamplerManager = new OpenGLTextureSamplerManager(_extensions);
_maxConstantBufferSlots = GL.GetInteger(GetPName.MaxUniformBufferBindings);
_constantBuffersBySlot = new OpenGLConstantBuffer[_maxConstantBufferSlots];
_newConstantBuffersBySlot = new OpenGLConstantBuffer[_maxConstantBufferSlots];
_maxTextureUnits = GL.GetInteger(GetPName.MaxTextureImageUnits);
_maxVertexAttributeSlots = GL.GetInteger(GetPName.MaxVertexAttribs);
_vertexAttribDivisors = new int[_maxVertexAttributeSlots];
}
private static OpenGLRenderContext CreateDefaultOpenGLRenderContext(Sdl2Window window)
{
bool debugContext = false;
#if DEBUG
debugContext = Preferences.Instance.AllowOpenGLDebugContexts;
#endif
IntPtr sdlHandle = window.SdlWindowHandle;
if (debugContext)
{
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextFlags, (int)SDL_GLContextFlag.Debug);
}
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextProfileMask, (int)SDL_GLProfile.Core);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMajorVersion, 4);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMinorVersion, 0);
IntPtr contextHandle = Sdl2Native.SDL_GL_CreateContext(sdlHandle);
if (contextHandle == IntPtr.Zero)
{
unsafe
{
byte * error = Sdl2Native.SDL_GetError();
string errorString = Utilities.GetString(error);
throw new InvalidOperationException("Unable to create GL Context: " + errorString);
}
}
Sdl2Native.SDL_GL_MakeCurrent(sdlHandle, contextHandle);
OpenGLPlatformContextInfo ci = new OpenGLPlatformContextInfo(
contextHandle,
Sdl2Native.SDL_GL_GetProcAddress,
Sdl2Native.SDL_GL_GetCurrentContext,
() => Sdl2Native.SDL_GL_SwapWindow(sdlHandle));
var rc = new OpenGLRenderContext(window, ci);
if (debugContext)
{
// Slows things down significantly -- Only use when debugging something specific.
rc.EnableDebugCallback(OpenTK.Graphics.OpenGL.DebugSeverity.DebugSeverityNotification);
}
return(rc);
}
