diff options
| -rw-r--r-- | src/gui/image/qimage_conversions.cpp | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/gui/image/qimage_conversions.cpp b/src/gui/image/qimage_conversions.cpp index c02c0c0d97..6ddd08d08d 100644 --- a/src/gui/image/qimage_conversions.cpp +++ b/src/gui/image/qimage_conversions.cpp @@ -365,7 +365,7 @@ bool convert_generic_inplace(QImageData *data, QImage::Format dst_format, Qt::Im uint buf[BufferSize]; uint *buffer = buf; uchar *srcData = data->data + data->bytes_per_line * yStart; - uchar *destData = srcData; + uchar *destData = srcData; // This can be temporarily wrong if we doing a shrinking conversion QDitherInfo dither; QDitherInfo *ditherPtr = nullptr; if ((flags & Qt::PreferDither) && (flags & Qt::Dither_Mask) != Qt::ThresholdDither) @@ -403,6 +403,18 @@ bool convert_generic_inplace(QImageData *data, QImage::Format dst_format, Qt::Im y += yn; } semaphore.acquire(segments); + if (data->bytes_per_line != params.bytesPerLine) { + // Compress segments to a continuous block + y = 0; + for (int i = 0; i < segments; ++i) { + int yn = (data->height - y) / (segments - i); + uchar *srcData = data->data + data->bytes_per_line * y; + uchar *destData = data->data + params.bytesPerLine * y; + if (srcData != destData) + memmove(destData, srcData, params.bytesPerLine * yn); + y += yn; + } + } } else #endif convertSegment(0, data->height); |