func BlendEquationSeparate(modeRGB uint32, modeAlpha uint32) {
	syscall.Syscall(gpBlendEquationSeparate, 2, uintptr(modeRGB), uintptr(modeAlpha), 0)
}
func BlendEquationSeparate(modeRGB uint32, modeAlpha uint32) {
	syscall.Syscall(gpBlendEquationSeparate, 2, uintptr(modeRGB), uintptr(modeAlpha), 0)
}
// set the RGB blend equation and the alpha blend equation separately