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Commit 0cbf8062 authored by Maarten Lankhorst's avatar Maarten Lankhorst Committed by Alexandre Julliard
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x11drv: Fix AlphaBlend read boundaries.

parent 43b27144
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Showing with 3 additions and 3 deletions
dlls/x11drv/xrender.c
View file @ 0cbf8062
...@@ -1554,14 +1554,14 @@ BOOL X11DRV_AlphaBlend(X11DRV_PDEVICE *devDst, INT xDst, INT yDst, INT widthDst, ...@@ -1554,14 +1554,14 @@ BOOL X11DRV_AlphaBlend(X11DRV_PDEVICE *devDst, INT xDst, INT yDst, INT widthDst,
top_down = TRUE; top_down = TRUE;
dstbits += widthSrc * (heightSrc - 1) * 4; dstbits += widthSrc * (heightSrc - 1) * 4;
y2 = ySrc; y2 = ySrc;
y = y2 + heightSrc; y = y2 + heightSrc - 1;
} }
else else
{ {
y = dib.dsBmih.biHeight - ySrc - 1; y = dib.dsBmih.biHeight - ySrc - 1;
y2 = y - heightSrc; y2 = y - heightSrc + 1;
} }
for(; y > y2; y--) { for(; y >= y2; y--) {
memcpy(dstbits, (char *)dib.dsBm.bmBits + y * dib.dsBm.bmWidthBytes + xSrc * 4, memcpy(dstbits, (char *)dib.dsBm.bmBits + y * dib.dsBm.bmWidthBytes + xSrc * 4,
widthSrc * 4); widthSrc * 4);
dstbits += (top_down ? -1 : 1) * widthSrc * 4; dstbits += (top_down ? -1 : 1) * widthSrc * 4;
......
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