[Bug 12194] Some DDraw games flicker the screen

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=12194





--- Comment #8 from Alexander Dorofeyev <alexd4 at inbox.lv>  2008-05-12 16:16:08 ---
I can reproduce the flickering with gdi renderer when changing gamma settings
but not elsewhere. However, that works nice and clean in opengl renderer, so,
probably this is some problem in wine. Perfectly possible that the problem may
be worse on some other setups.

The issue is certainly coming from the x11_copy_to_screen call - that's the
essential part added in rewrite of the method and the problem goes away if it's
removed. But the call itself seems to be right. Without it animating palette
doesn't work in e.g. Red Alert 1. It's also essentially just a BitBlt to window
DC. IIRC BitBlt wasn't supposed to produce flickering on native. This looks
like a tough problem, maybe some quirks/bugs of winex11 driver's implementation
of BitBlt.


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