internal/graphicsdriver/opengl/gl/package_notwindows.go
func CopyPixels(x int32, y int32, width int32, height int32, xtype uint32) {
	C.glowCopyPixels(gpCopyPixels, (C.GLint)(x), (C.GLint)(y), (C.GLsizei)(width), (C.GLsizei)(height), (C.GLenum)(xtype))
}
func CopyPixels(x int32, y int32, width int32, height int32, xtype uint32) {
	C.glowCopyPixels(gpCopyPixels, (C.GLint)(x), (C.GLint)(y), (C.GLsizei)(width), (C.GLsizei)(height), (C.GLenum)(xtype))
}
// copy pixels in the frame buffer