[Bug 91499] New: [i915 sna] small Pixmaps rendered incorrectly

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91499

            Bug ID: 91499
           Summary: [i915 sna] small Pixmaps rendered incorrectly
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: freedesktop at osandov.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

Created attachment 117434
  --> https://bugs.freedesktop.org/attachment.cgi?id=117434&action=edit
Reproducer program

Hi,

I'm running into a weird rendering issue on my Lenovo ThinkPad X1 Carbon 3rd
gen. Small (8x8) Pixmaps created with XCreateBitmapFromData() or
XReadBitmapFile() are corrupted in SNA mode, but not in UXA mode and not on my
older X1 Carbon 1st gen.

uname -m: x86_64
xf86-video-intel version: checked with 2.99.917 and latest git master
(4f0a58c9db)
xserver version: 1.17.2
kernel version: 4.1.2-2-ARCH
Linux distro: Arch
Machine: Lenovo ThinkPad X1 Carbon 3rd gen

I'm attaching a few screenshots and a simple reproducer.

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