[Bug 57241] New: [r600g] glXCreateContextAttribsARB() fails under certain circumstances

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=57241

          Priority: medium
            Bug ID: 57241
          Assignee: dri-devel at lists.freedesktop.org
           Summary: [r600g] glXCreateContextAttribsARB() fails under
                    certain circumstances
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: nfxjfg at gmail.com
          Hardware: Other
            Status: NEW
           Version: 9.0
         Component: Drivers/DRI/Radeon
           Product: Mesa

Test program: http://sprunge.us/eGJa
Failing output: http://bpaste.net/show/58701/
Successfull output (on another setup): http://dpaste.com/832706/

What seems to trigger this is calling glXCreateContextAttribsARB() with the
following context attributes included: GLX_CONTEXT_PROFILE_MASK_ARB,
GLX_CONTEXT_CORE_PROFILE_BIT_ARB, and GLX_CONTEXT_FLAGS_ARB,
GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB. Removing these seems to make it work.

The test program has been confirmed to work on Mesa with i965, and nvidia
binary drivers 304.60. The actual program which triggered this also works on
fglrx.

User's glxinfo: http://bpaste.net/show/58678/
X server: "x11-base/xorg-server-1.13.0-r1" on Gentoo
The test program is a modified version of
http://www.opengl.org/wiki/Tutorial:_OpenGL_3.0_Context_Creation_(GLX)

It's not clear whether this is a bug or just a caveat, and it has been
confirmed on one installation only so far.

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