[Mesa-dev] [Bug 59541] New: [swrast] pigit fbo-blit regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=59541

          Priority: medium
            Bug ID: 59541
          Keywords: regression
                CC: anuj.phogat at gmail.com
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: [swrast] pigit fbo-blit 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: ca39c0f94a4e3cc25b6cc9507fb729b85140733a (master)

Run piglit fbo-blit on swrast.

$ ./bin/fbo-blit -auto
Mesa 9.1-devel implementation error: unexpected pixel size (0) in blit_nearest
Please report at bugs.freedesktop.org
Mesa 9.1-devel implementation error: unexpected pixel size (0) in blit_nearest
Please report at bugs.freedesktop.org
Mesa 9.1-devel implementation error: unexpected pixel size (0) in blit_nearest
Please report at bugs.freedesktop.org
Probe at (10,40)
  Expected: 1.000000 0.000000 0.000000
  Observed: 0.501961 0.501961 0.501961
Probe at (10,70)
  Expected: 1.000000 0.000000 0.000000
  Observed: 0.501961 0.501961 0.501961
Probe at (10,40)
  Expected: 1.000000 0.000000 0.000000
  Observed: 1.000000 0.000000 1.000000
PIGLIT: {'result': 'fail' }

bed997dabaada5e7c8081db08f93a6f1b5932e8b is the first bad commit
commit bed997dabaada5e7c8081db08f93a6f1b5932e8b
Author: Anuj Phogat <anuj.phogat at gmail.com>
Date:   Tue Dec 11 20:17:47 2012 -0800

    mesa: Add support to allow blitting to multiple color draw buffers

    This patch fixes a blitting case when drawAttachment->Texture ==
    readAttachment->Texture. It was causing an assertion failure in
    intel_miptree_attach_map() with gles3 conformance test case:
    framebuffer_blit_functionality_minifying_blit

    Number of changes in this file look scary. But most of them are caused
    by introducing a big for loop to support rendering to multiple color
    draw buffers.

    V2: Fixed a case when number of draw buffer attachments are zero.
    V3: Put a for loop in blit_nearest() and blit_linear() functions in to
        support blitting to multiple color draw buffers.
    V4: Remove variable declaration in for loop to avoid MSVC compilation
        issues.

    Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
    Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
    Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

:040000 040000 98d5e6ea72f2fcf765cd8241682ab18c8081cc70
ee017ce78ded09098a4ded7a90e19130b53e4eea M    src
bisect run success

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