func GetTexImage(target uint32, level int32, format uint32, xtype uint32, pixels unsafe.Pointer) {
	syscall.Syscall6(gpGetTexImage, 5, uintptr(target), uintptr(level), uintptr(format), uintptr(xtype), uintptr(pixels), 0)
}
func GetTexImage(target uint32, level int32, format uint32, xtype uint32, pixels unsafe.Pointer) {
	syscall.Syscall6(gpGetTexImage, 5, uintptr(target), uintptr(level), uintptr(format), uintptr(xtype), uintptr(pixels), 0)
}
func GetTexImage ( target uint32 , level int32 , format uint32 , xtype uint32 , pixels unsafe . Pointer ) { syscall . Syscall6 ( gpGetTexImage , 5 , uintptr ( target ) , uintptr ( level ) , uintptr ( format ) , uintptr ( xtype ) , uintptr ( pixels ) , 0 ) }
// return a texture image
return a texture image