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

[wine-bugs at winehq.org]

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


Roderick Colenbrander <thunderbird2k at gmx.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|REMIND                      |LATER




--- Comment #42 from Roderick Colenbrander <thunderbird2k at gmx.net>  2008-06-09 01:11:35 ---
The key difference is that Wine its opengl rendering does one thing which
normal applications don't do. In case of opengl you select a 'pixel format'
(roughly speaking the color depth and some other properties) and you apply this
format to a window. You can only do that ONCE for a given window. Direct3D
allows you to adjust the pixel format and for that reason we have a mechanism
in place to recreate an opengl window. (I explicitly say opengl window since we
have a toplevel window and the opengl window is a child window of this parent
X11 window)

Multisampling is also a property of the pixel format, so enabling of
multisampling (in case of Direct3D) usually requires recreation of the opengl
window. This works fine in most cases (we also need it outside of
multisampling) but the Nvidia drivers don't seem to like it in all cases. When
it doesn't work we get a GLXBadDrawable error. The window got created fine
(else we would have received an error there) but somehow making it current to
GLX fails.

It is an Nvidia bug because this GLXBadDrawable depends on the driver version
and driver options. A possible reason for the error can be that the driver is
out of video memory or so. A multisampled window requires a lot more video
memory (16x as much video memory for a 4x multisampled window).


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