[Bug 17982] New: PatBlt cannot draw arbitrary parallelograms based on the world transform
wine-bugs at winehq.org
wine-bugs at winehq.org
Wed Apr 8 17:18:09 CDT 2009
http://bugs.winehq.org/show_bug.cgi?id=17982
Summary: PatBlt cannot draw arbitrary parallelograms based on the
world transform
Product: Wine
Version: 1.1.18
Platform: Other
OS/Version: other
Status: UNCONFIRMED
Severity: enhancement
Priority: P2
Component: winex11.drv
AssignedTo: wine-bugs at winehq.org
ReportedBy: madewokherd at gmail.com
Using the functions SetGraphicsMode and (Set|Modify)WorldTransform, it is
possible to define an arbitrary matrix to transform all points as things are
drawn to device contexts. Using this matrix, it should be possible to apply
arbitrary rotation/shear effects. Thus, rectangles drawn on the hdc can be
transformed into arbitrary parallelograms.
This only works on systems where GM_ADVANCED is supported (NT but not 9x,
according to MSDN).
I have written a test program that demonstrates this on Windows. On Wine, it
can only draw rectangles.
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