func Viewport(x int32, y int32, width int32, height int32) {
	C.glowViewport(gpViewport, (C.GLint)(x), (C.GLint)(y), (C.GLsizei)(width), (C.GLsizei)(height))
}
func Viewport(x int32, y int32, width int32, height int32) {
	C.glowViewport(gpViewport, (C.GLint)(x), (C.GLint)(y), (C.GLsizei)(width), (C.GLsizei)(height))
}
// set the viewport