public void bindFramebuffer(int target, WebGLFramebuffer framebuffer)
{
var bufferId = (int)(framebuffer != null ? framebuffer.Value : 0);
#if _DEBUG
Log.Info(string.Format("bindFramebuffer {0} {1}", target, bufferId));
#endif
#if GLEW_STATIC
Gl.glBindFramebuffer(target, bufferId);
#else
Gl.__glewBindFramebuffer(target, bufferId);
#endif
this.ErrorTest();
}