[Mesa-dev] [Bug 48837] New: infinite loop in swrast

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=48837

             Bug #: 48837
           Summary: infinite loop in swrast
    Classification: Unclassified
           Product: Mesa
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Mesa core
        AssignedTo: mesa-dev at lists.freedesktop.org
        ReportedBy: freedesktop at behdad.org


Grab and compile http://code.google.com/p/glyphy, compile it (need glut and
freetype), and run demo/glyphy-demo over ssh or something to force using
swrast.

This used to work.  I was getting .2fps but was working (with swrast from
Ubuntu 11.10).  With master, I hit the instruction limit in fragment shader:

Mesa 8.1-devel implementation error: Infinite loop detected in fragment program

When I bump the limit from 65536 to 655360000, I don't get any rendering, which
suggests that indeed it's hitting an infinite loop.  But the GLyphy code is
correct and should work.

Note that GLyphy doesn't work with mesa intel driver right now, but Eric Anholt
sent a patchset a few days ago that fixes that.

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