[Bug 13101] GLXBadDrawable when antialias ON (Nvidia driver bug?)

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=13101





--- Comment #47 from Roderick Colenbrander <thunderbird2k at gmx.net>  2008-06-09 04:19:45 ---
You have to distinguish between several things. First of all there are several
forms of 'anti-aliasing'. The most basic way is multisampling and basically the
image is rendered at a MUCH higher resolution and then scaled back (in case of
4x using 1600x1200 it would be rendered at 6400x4800!). Then there are much
more efficient versions of FSAA like quincunx and others. Those also require
more video memory but much, much less.

Second you can enable FSAA in nvidia-settings or a game can request Wine to
enable it. When you set it using nvidia-settings it can select those much more
efficient modes and those are faster and take much less memory. Nvidia-settings
should in theory work regardless of Wine but it has limitations. It does some
evil override and this might cause issues and second this way might not work
with FBOs at all.

In case a game asks Wine to enable FSAA we use multisampling and that takes a
lot of video memory. Sure your card can have 512MB but that doesn't mean the
framebuffer can use all of it. Most of it is meant for texturing. The bug
likely is that Nvidia doesn't like our window recreation code. It might not
have released the video memory of the previous window yet and this could cause
the issue.


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