diff
- const BYTE* pDstStart = &pDstData[nXDst * dstBytesPerPixel + nYDst * nDstStep];
+ uint64_t indexX = (uint64_t)nXDst * dstBytesPerPixel;
+ uint64_t indexY = (uint64_t)nYDst * nDstStep;
+ const BYTE* pDstStart = &pDstData[indexX + indexY];
