Graphics.Rendering.OpenGL.Raw.EXT.FramebufferMultisample
glGetEXTFramebufferMultisample
gl_EXT_framebuffer_multisample
gl_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT
gl_MAX_SAMPLES_EXT
gl_RENDERBUFFER_SAMPLES_EXT
glRenderbufferStorageMultisampleEXT