[Mesa3d-dev] [Bug 22561] New: Some GLX_SGIX_fbconfig functions improperly check direct extensions available when using indirect rendering

[<bug...@fr...>]

http://bugs.freedesktop.org/show_bug.cgi?id=22561

           Summary: Some GLX_SGIX_fbconfig functions improperly check direct
                    extensions available when using indirect rendering
           Product: Mesa
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: GLX
        AssignedTo: mes...@li...
        ReportedBy: jon...@dr...


Created an attachment (id=27273)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=27273)
Patch which (incorrectly) removes the problematic calls to
__glXExtensionBitIsEnabled()

I'm using a Cygwin/X X server (which I'm writing some code for), which
announces GLX version 1.2 and the GLX_SGIX_fbconfig extension

Indirect rendering is forced for the client using LIBGL_ALWAYS_INDIRECT

glxgears_fbconfig demo fails due to glXCreateContextWithConfigSGIX failing.

The cause of this seems to be that the mesa implementation of
glXGetFBConfigFromVisualSGIX() uses __glXExtensionBitIsEnabled() to check if
the GLX_SGIX_fbconfig extension is available, but that function only checks if
the extension is supported for direct rendering.

Nothing else apart from these 3 functions from GLX_SGIX_fbconfig seems to use
__glXExtensionBitIsEnabled, so I'm not sure exactly what the bug is here, or
what the solution is.

Attached is a patch which removes those checks, and allows glxgears_fbconfig to
run successfully, but that's probably incorrect for the direct path.


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.