func RenderMode(mode uint32) int32 {
	ret := C.glowRenderMode(gpRenderMode, (C.GLenum)(mode))
	return (int32)(ret)
}
func RenderMode(mode uint32) int32 {
	ret := C.glowRenderMode(gpRenderMode, (C.GLenum)(mode))
	return (int32)(ret)
}
// set rasterization mode