Bug 62681

Summary:

[sna 865g] Adobe flash corruption

Product:

xorg

Reporter:

tka <tka>

Component:

Driver/intel

Assignee:

Chris Wilson <chris>

Status:

RESOLVED NOTOURBUG

QA Contact:

Intel GFX Bugs mailing list <intel-gfx-bugs>

Severity:

normal

Priority:

medium

Version:

unspecified

Hardware:

x86 (IA32)

OS:

Linux (All)

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
backtrace of the failed assertion	none

Description tka 2013-03-23 22:33:43 UTC

Created attachment 76953 [details]
backtrace of the failed assertion

The output of Adobe's flash player is heavily corrupted with versions 2.21.4 and 2.21.5 of xf86-video-intel. Flash videos are distorted and shown with wrong colors. Version 2.21.3 is ok.

Bisecting the changes between 2.21.3 and 2.21.4 revealed commit 4174c7bb14ea3428d86dc327950e76d0589e0cc4 (sna: Use depth-15 rather than depth-16 for reduced bw devices) to be the cause of the corruption. Reverting that change on top of the current HEAD (f6582387e7d601272a92c3aaeb656de5ce1ffe75) resolves the issue.

Furthermore, trying to grab a screenshot with a corrupted youtube-video triggered an assertion in kgem_create_buffer_2d (width > 0 && height > 0; see attached backtrace).

Comment 1 Chris Wilson 2013-03-23 23:12:07 UTC

Adobe flash is not my bug, but their notoriously broken swrast.The assertion failure looks to be have been a silly oversight:

Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Sat Mar 23 23:08:02 2013 +0000

    sna: Convert out-of-bounds sample to CLEAR
    
    If asked to perform pixelformat conversion of a sample that resides
    outside the valid area, we can simply substitute CLEAR.
    
    Bugzila: http://bugs.freedesktop.org/show_bug.cgi?id=62681
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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