[Mesa-dev] [Bug 62922] New: [softpipe] piglit arb_seamless_cubemap regression

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Mar 29 20:49:27 PDT 2013


          Priority: medium
            Bug ID: 62922
          Keywords: regression
                CC: jfonseca at vmware.com
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: [softpipe] piglit arb_seamless_cubemap regression
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: vlee at freedesktop.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Other
           Product: Mesa

mesa: c34bbe110d1e562b1594a9a4f2e83a2ab5630036 (master)

$ ./bin/arb_seamless_cubemap -auto
Probe at (80,20)
  Expected: 0.500000 0.000000 0.500000
  Observed: 1.000000 0.000000 0.000000
Probe at (110,20)
  Expected: 0.500000 0.000000 0.500000
  Observed: 0.000000 0.000000 1.000000
PIGLIT: {'result': 'fail' }

6a3d77e13dbae17000e35ce16023532200e68d09 is the first bad commit
commit 6a3d77e13dbae17000e35ce16023532200e68d09
Author: José Fonseca <jfonseca at vmware.com>
Date:   Thu Mar 14 11:44:21 2013 +0000

    softpipe: Shrink context size.

    - each softpipe_tex_tile_cache 50*64*64*4*4 = 3,276,800 bytes
    - each softpipe_context has 3*32 softpipe_tex_tile_cache, i.e, each
      context is 314,572,800 bytes, i.e, 300MB

    That is, in a 32bits process (around 3GB virtual memory max), we can
    only fit 10 contexts.

    This change is a short-term hack to shrink the context size.  Longer
    term we'll need to change how the texture cache works.

    Reviewed-by: Brian Paul <brianp at vmware.com>

:040000 040000 64ff15d9847673c6545754f29cba7bcbdd4be457
727f8e3f8b282c58978ca3c4a9d637ebc4f7f21e M    src
bisect run success

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