http://bugs.winehq.org/show_bug.cgi?id=28684
--- Comment #2 from hyperpreston@gmail.com 2011-10-13 06:06:45 CDT --- I'm running on Windows using Mesa's Windows GDI driver. As I said I didn't try what version Mesa reports with other drivers / on other platforms as I only built Win binary. Wine version is 1.3.21 but I checked master HEAD and it's the same.
This is what wined3d says: fixme:(dlls/wined3d/directx.c:1395) Received unrecognized GL_VENDOR "Brian Paul". Returning HW_VENDOR_NVIDIA.
wined3d_guess_gl_vendor works because it checks for occurence of "Mesa" in the vendor string which for the GDI driver is "Mesa Windows GDI Driver".