diff options
| -rw-r--r-- | vcl/source/bitmap/bitmapscalesuper.cxx | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/vcl/source/bitmap/bitmapscalesuper.cxx b/vcl/source/bitmap/bitmapscalesuper.cxx index 0ed69628ff07..13b65e6dc4d9 100644 --- a/vcl/source/bitmap/bitmapscalesuper.cxx +++ b/vcl/source/bitmap/bitmapscalesuper.cxx @@ -642,9 +642,15 @@ void scale24bitBGR2(BitmapReadAccess* pAcc, BitmapWriteAccess* pWAcc, else if ( nLineRange == i ) nWeightY = pMapFY[ nBottom ]; - nSumB += nWeightY * ( nSumRowB / nTotalWeightX ); - nSumG += nWeightY * ( nSumRowG / nTotalWeightX ); - nSumR += nWeightY * ( nSumRowR / nTotalWeightX ); + if (nTotalWeightX) + { + nSumRowB /= nTotalWeightX; + nSumRowG /= nTotalWeightX; + nSumRowR /= nTotalWeightX; + } + nSumB += nWeightY * nSumRowB; + nSumG += nWeightY * nSumRowG; + nSumR += nWeightY * nSumRowR; nTotalWeightY += nWeightY; } |