[Bug 10412] Squares in light effects (regression)

http://bugs.winehq.org/show_bug.cgi?id=10412

--- Comment #7 from Stefan Dösinger   2007-11-11 12:19:49 ---
Do you have rendertargetlockmode set to READTEX in the registry? Otherwise this
patch should not change anything.

You should use fbos for offscreen rendering(not the default yet unfortunately).
Guild Wars performs a stretched blit from one texture to another, and fbos are
the only way to support this. Maybe something in the old code incorrectly
filtered the texture at some point. Maybe we can (ab)use that to get the games
looking nice with non-fbo offscreen rendering too.