[Bug 12191] X11DRV_ChoosePixelFormat fails (Wing Commander: Secret Ops)

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=12191





--- Comment #6 from Roderick Colenbrander <thunderbird2k at gmx.net>  2008-03-25 17:51:22 ---
When using WineD3D on Windows it uses opengl32.dll and WGL. On Wine we directly
use libGL.so for GL functions (using some evil hack I added) and WGL functions
are called using some evil mechanism as well.

The function ChoosePixelFormat is part of gdi32 but in essence it is an opengl
function. In case of Wine wglChoosePixelFormat is forwarded to gdi32's
ChoosePixelFormat.

Anyway ChoosePixelFormat is in the end implemented in the display driver which
is winex11.drv. Inside winex11.drv it is X11DRV_ChoosePixelFormat which is in
opengl.c. The function looks for a 'best' matching pixel format against the
available GLX pixel formats.

Anyway the function should not crash inside X11DRV_ChoosePixelFormat. Likely
the function is reading some bad memory or so. 


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