[Mesa-dev] [Bug 64172] New: piglit ext_transform_feedback-change-size offset-grow regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64172

          Priority: medium
            Bug ID: 64172
          Keywords: regression
                CC: zackr at vmware.com
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: piglit ext_transform_feedback-change-size offset-grow
                    regression
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: vlee at freedesktop.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Mesa core
           Product: Mesa

mesa: 573d8813fdbb116f4500d2044c56d80aab73ab7f (master)

$ ./bin/ext_transform_feedback-change-size offset-grow -auto
PRIMITIVES_WRITTEN: expected=2, actual=1
data[0]: expected=-1.000000, actual=-1.000000
data[1]: expected=-1.000000, actual=-1.000000
data[2]: expected=-1.000000, actual=-1.000000
data[3]: expected=101.000000, actual=101.000000
data[4]: expected=102.000000, actual=102.000000
data[5]: expected=103.000000, actual=103.000000
data[6]: expected=104.000000, actual=-1.000000
data[7]: expected=105.000000, actual=-1.000000
data[8]: expected=106.000000, actual=-1.000000
data[9]: expected=-1.000000, actual=-1.000000
PIGLIT: {'result': 'fail' }

53d36d5fb09cda39c8d3646cbccbd343b34bfb54 is the first bad commit
commit 53d36d5fb09cda39c8d3646cbccbd343b34bfb54
Author: Zack Rusin <zackr at vmware.com>
Date:   Tue Apr 23 18:56:47 2013 -0400

    draw/so: Fix overflow calculations

    We weren't taking the buffer offset, destination offset or the
    stride into consideration so we were frequently writing into
    an overflown buffer.

    Signed-off-by: Zack Rusin <zackr at vmware.com>
    Reviewed-by: José Fonseca <jfonseca at vmware.com>
    Reviewed-by: Roland Scheidegger <sroland at vmware.com>

:040000 040000 72bbc0b1c2b6295a3ef7cc74bfac173d542ac4e0
7393f146148f10efa422cbb76658f2b6b6df65d9 M    src
bisect run success

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