[Bug 2260] New: opengl: enumerate pixel formats then choose pixel format fails

Wine Bugs wine-bugs at winehq.org
Fri May 28 20:45:22 CDT 2004


           Summary: opengl: enumerate pixel formats then choose pixel format
           Product: Wine
           Version: unspecified
          Platform: Other
        OS/Version: other
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-x11driver
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: colin at gibbsonline.net

This was discovered trying to run some of the nvida demos. In particular the
Chameleon demo runs when this problem is fixed.

The error I get from the app is:
GLUT: Fatal Error in DummyAppName: pixel format with necessary capabilities not

Tracing it reveals that it calls X11DRV_DescribePixelFormat MAX_PIXELFORMATS
times. So the physDev->visuals array gets filled with visuals from calls to
glXChooseVisual. Then it calls X11DRV_ChoosePixelFormat which uses
XGetVisualInfo and tries to match that with a value in the array which is where
it fails. It seems glXChooseVisual gives different values from XGetVisualInfo.

So the fix I tried was to use XGetVisualInfo in DescribePixelFormats as well.
Which seems to work as least for the nvida demos.

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