[Bug 66163] New: Sporadic image corruptions in firefox for images which were not cached

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66163

          Priority: medium
            Bug ID: 66163
          Assignee: chris at chris-wilson.co.uk
           Summary: Sporadic image corruptions in firefox for images which
                    were not cached
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: linuxhippy at gmail.com
          Hardware: Other
            Status: NEW
           Version: git
         Component: Driver/intel
           Product: xorg

When firefox does its partially-display-while-loading on images which are not
in cache, I sometimes get corruptions which look like tiling errors on my SNB
laptop.

Steps to reproduce:
1. Display disk-cache for FF completely (0 mb)
2. Load: https://www.shroudoftheavatar.com/
3. While the page is loading, scroll up and down using the scrollbar
4. Some images will be corrupted, as shown in the attached screenshot.

I bisected the issue down to: 

commit fd375da5caf34f93a4e87670bb0c70fec5b4c55c
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Sun Jun 23 17:06:11 2013 +0100

    sna: Allow tiled uploads to accumulate damage

    And for the upload to create the bo as required.

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

:040000 040000 cfdf19f7ec5ccaec769ac5f0103cb369d7d08b38
1bec59ec587054734ae208a400d70053f57be728 M    src

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