code: func BlitFramebuffer(srcX0 int32, srcY0 int32, srcX1 int32, srcY1 int32, dstX0 int32, dstY0 int32, dstX1 int32, dstY1 int32, mask uint32, filter uint32) {
  	syscall.Syscall12(gpBlitFramebuffer, 10, uintptr(srcX0), uintptr(srcY0), uintptr(srcX1), uintptr(srcY1), uintptr(dstX0), uintptr(dstY0), uintptr(dstX1), uintptr(dstY1), uintptr(mask), uintptr(filter), 0, 0)
  }
docs: // copy a block of pixels from one framebuffer object to another