code: func CopyImageSubData(srcName uint32, srcTarget uint32, srcLevel int32, srcX int32, srcY int32, srcZ int32, dstName uint32, dstTarget uint32, dstLevel int32, dstX int32, dstY int32, dstZ int32, srcWidth int32, srcHeight int32, srcDepth int32) {
  	syscall.Syscall15(gpCopyImageSubData, 15, uintptr(srcName), uintptr(srcTarget), uintptr(srcLevel), uintptr(srcX), uintptr(srcY), uintptr(srcZ), uintptr(dstName), uintptr(dstTarget), uintptr(dstLevel), uintptr(dstX), uintptr(dstY), uintptr(dstZ), uintptr(srcWidth), uintptr(srcHeight), uintptr(srcDepth))
  }
docs: // perform a raw data copy between two images