STENCIL_INDEX = GL_STENCIL_INDEX,
DEPTH_COMPONENT = GL_DEPTH_COMPONENT,
STENCIL_INDEX = GL_STENCIL_INDEX,
DEPTH_COMPONENT = GL_DEPTH_COMPONENT,
PixelFormat get_base_pixelformat(PixelFormat);
PixelFormat get_srgb_pixelformat(PixelFormat);
unsigned get_component_count(PixelFormat);
PixelFormat get_base_pixelformat(PixelFormat);
PixelFormat get_srgb_pixelformat(PixelFormat);
unsigned get_component_count(PixelFormat);