performance issue when OffscreenRenderingMode = "pbuffer"

[Jérôme Gardou]

I tried to play Supreme Commander using pbuffer option instead of fbo. I 
was quite happy with it, since I gained quite a bunch of performance (I 
mean, something I really COULD see), but after a while, the performance 
dropped dramatically, to ~4-5 fps.

I tested quite a few thing, and I finally found that pixel bufers were 
not taken in account when calculating available texture memory. The game 
then allocated more textures, and good opengl didn't dare complain when 
putting them in system memory.

Attached is a patch which should solve the problem.

For those who are curious, try setting VideoMemorySize to 200 instead of 
256. It works just like a charm.

-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: 0002-wined3d-take-pixel-buffers-in-account-when-calculatin.txt
Url: http://www.winehq.org/pipermail/wine-devel/attachments/20090125/6da8ad44/attachment.txt