[Bug 16699] OpenGL anti-aliasing capabilities of nVidia gpu not exposed to Google Sketchup 7

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=16699





--- Comment #18 from Roderick Colenbrander <thunderbird2k at gmail.com>  2009-08-22 13:15:22 ---
The way 'classic' opengl works is that there is a list of so called pixel
formats. A pixel format has properties like the number of colors bits, color
depth and also the level of 'anti-aliasing'. The Wine/Sketchup bug is that for
some reason Sketchup is not happy with the pixel formats Wine offers. On a
Windows box I checked the formats which Sketchup selects on Windows and the
same are around on Wine. I would need to know what Sketchup is doing to fix the
bug.

Adjusting of the anti-aliasing level in nvidia-settings basically overrides the
pixel format a program selects in Wine. So when lets say Wine gives Sketchup
pixel format number 10 which does not offer multisampling, after playing with
nvidia-settings this pixel format 10 will receive multisampling support but the
app is not aware of this.

So using nvidia-settings you can work around a Wine bug but since I don't know
what Sketchup exactly wants (there might also just be a bug in Sketchup) I
can't fix it.

Roderick

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