public static int GetBoundTexture2D()
{
var prevTexture = 0;
GL.GetInteger(GetPName.TextureBinding2D, out prevTexture);
GraphicsExtensions.LogGLError("GraphicsExtensions.GetBoundTexture2D() GL.GetInteger");
return(prevTexture);
}
private ShaderProgram Link(Shader vertexShader, Shader pixelShader)
{
// NOTE: No need to worry about background threads here
// as this is only called at draw time when we're in the
// main drawing thread.
var program = GL.CreateProgram();
GraphicsExtensions.CheckGLError();
GL.AttachShader(program, vertexShader.GetShaderHandle());
GraphicsExtensions.CheckGLError();
GL.AttachShader(program, pixelShader.GetShaderHandle());
GraphicsExtensions.CheckGLError();
//vertexShader.BindVertexAttributes(program);
GL.LinkProgram(program);
GraphicsExtensions.CheckGLError();
GL.UseProgram(program);
GraphicsExtensions.CheckGLError();
vertexShader.GetVertexAttributeLocations(program);
pixelShader.ApplySamplerTextureUnits(program);
var linked = 0;
GL.GetProgram(program, GetProgramParameterName.LinkStatus, out linked);
GraphicsExtensions.LogGLError("VertexShaderCache.Link(), GL.GetProgram");
if (linked == (int)Bool.False)
{
var log = GL.GetProgramInfoLog(program);
Console.WriteLine(log);
GL.DetachShader(program, vertexShader.GetShaderHandle());
GL.DetachShader(program, pixelShader.GetShaderHandle());
#if MONOMAC
GL.DeleteProgram(1, ref program);
#else
GL.DeleteProgram(program);
#endif
throw new InvalidOperationException("Unable to link effect program");
}
return(new ShaderProgram(program));
}
private void PlatformSetViewport(ref Viewport value)
{
if (IsRenderTargetBound)
{
GL.Viewport(value.X, value.Y, value.Width, value.Height);
}
else
{
GL.Viewport(value.X, PresentationParameters.BackBufferHeight - value.Y - value.Height, value.Width, value.Height);
}
GraphicsExtensions.LogGLError("GraphicsDevice.Viewport_set() GL.Viewport");
#if GLES
GL.DepthRange(value.MinDepth, value.MaxDepth);
#else
GL.DepthRange(value.MinDepth, value.MaxDepth);
#endif
GraphicsExtensions.LogGLError("GraphicsDevice.Viewport_set() GL.DepthRange");
// In OpenGL we have to re-apply the special "posFixup"
// vertex shader uniform if the viewport changes.
_vertexShaderDirty = true;
}