[Bug 12485] New: BitBlt does not ignore source clipping
wine-bugs at winehq.org
wine-bugs at winehq.org
Thu Apr 10 11:38:19 CDT 2008
http://bugs.winehq.org/show_bug.cgi?id=12485
Summary: BitBlt does not ignore source clipping
Product: Wine
Version: CVS/GIT
Platform: Other
OS/Version: other
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: winex11.drv
AssignedTo: wine-bugs at winehq.org
ReportedBy: chris at chris-wilson.co.uk
Created an attachment (id=12046)
--> (http://bugs.winehq.org/attachment.cgi?id=12046)
winex11: Ignore source clipping in BitBlt.
Currently X11DRV_ClientSideDIBCopy checks for unhandled clipping modes using:
if (GetRgnBox(physDevSrc->region, &unusedRect) == COMPLEXREGION ||
GetRgnBox(physDevDst->region, &unusedRect) == COMPLEXREGION)
However, "BitBlt only does clipping on the destination DC" [source MSDN].
This causes a failure whilst testing cairo, in
test/clip-fill-rule-pixel-aligned targeting a similar ARGB32 surface (i.e it
first draws to an offscreen surface and then blits that to the destination),
which is presumably indicative of a secondary bug along the
X11DRV_ClientSideDIBCopy failure path.
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