http://bugs.freedesktop.org/show_bug.cgi?id=12731

           Summary: dri is disabled with i915 driver
           Product: Mesa
           Version: CVS
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: highest
         Component: Drivers/DRI/i915
        AssignedTo: [EMAIL PROTECTED]
        ReportedBy: [EMAIL PROTECTED]
                CC: [email protected]


Dri is disabled with i915 driver. glxinfo reports dri is disabled and glxgears
gives very low FPS(75-85FPS).

This bug was introduced by commit:

commit 77e0523fb7769df4bf43747e136b1653b2421b97
Author: Eric Anholt <[EMAIL PROTECTED]>
Date:   Thu Oct 4 12:07:25 2007 -0700

    [965] Replace various alignment code with a shared ALIGN() macro.

    In the process, fix some alignment issues:
    - Scratch space allocation was aligned into units of 1KB, while the
allocati
      wanted units of bytes, so we never allocated enough space for scratch.
    - GRF register count was programmed as ALIGN(val - 1, 16) / 16 instead of
      ALIGN(val, 16) / 16 - 1, which overcounted for val != 16n+1.


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