diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/Quartz/Fl_Quartz_Graphics_Driver_image.cxx | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/drivers/Quartz/Fl_Quartz_Graphics_Driver_image.cxx b/src/drivers/Quartz/Fl_Quartz_Graphics_Driver_image.cxx index daf26951c..f06333daf 100644 --- a/src/drivers/Quartz/Fl_Quartz_Graphics_Driver_image.cxx +++ b/src/drivers/Quartz/Fl_Quartz_Graphics_Driver_image.cxx @@ -55,8 +55,12 @@ static void innards(const uchar *buf, int X, int Y, int W, int H, { if (!linedelta) linedelta = W*abs(delta); - const void *array = buf; uchar *tmpBuf = 0; + if (!cb) { + if (delta < 0) buf -= (W-1)*(-delta); + if (linedelta < 0) buf -= (H-1)*abs(linedelta); + } + const void *array = buf; if (cb || Fl_Surface_Device::surface() != Fl_Display_Device::display_device()) { tmpBuf = new uchar[ H*W*abs(delta) ]; if (cb) { |