func NamedFramebufferReadBuffer(framebuffer uint32, src uint32) {
	syscall.Syscall(gpNamedFramebufferReadBuffer, 2, uintptr(framebuffer), uintptr(src), 0)
}
func NamedFramebufferReadBuffer(framebuffer uint32, src uint32) {
	syscall.Syscall(gpNamedFramebufferReadBuffer, 2, uintptr(framebuffer), uintptr(src), 0)
}
func NamedFramebufferReadBuffer ( framebuffer uint32 , src uint32 ) { syscall . Syscall ( gpNamedFramebufferReadBuffer , 2 , uintptr ( framebuffer ) , uintptr ( src ) , 0 ) }
// select a color buffer source for pixels
select a color buffer source for pixels