[Bug 42538] New: wined3d checks for a wrong GL_VENDOR in wined3d_guess_gl_vendor

https://bugs.winehq.org/show_bug.cgi?id=42538

Bug ID: 42538
           Summary: wined3d checks for a wrong GL_VENDOR in
                    wined3d_guess_gl_vendor
           Product: Wine
           Version: 2.2
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: trivial
          Priority: P2
         Component: directx-d3d
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

The check >if (strstr(gl_vendor_string, "Mesa")< in wined3d/directx.c:1729 is
wrong. Mesa presents itself with GL_VENDOR = "Brian Paul" and GL_RENDERER =
"Mesa" as can be seen here:
https://cgit.freedesktop.org/mesa/mesa/tree/src/mesa/main/getstring.c#n115

Even though the code works because it later checks for GL_RENDERER == "Mesa" it
still should be fixed. This was also previously fixed in
wined3d_guess_card_vendor.