Bug 42676

Summary:

Text selection broken in skype [SNA]

Product:

xorg

Reporter:

Clemens Eisserer <linuxhippy>

Component:

Driver/intel

Assignee:

Chris Wilson <chris>

Status:

RESOLVED FIXED

QA Contact:

Xorg Project Team <xorg-team>

Severity:

normal

Priority:

medium

Version:

git

Hardware:

Other

OS:

All

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
screenshot chat window	none
skype menu	none

Description Clemens Eisserer 2011-11-07 11:11:19 UTC

Created attachment 53261 [details]
screenshot chat window

I am using the statically linked skype-2.2.0.35 binary, selecting text in the chat window characters results in garbled text rendering.
Also menu-entries which are renered selected result in garbled text.

I wasn't able to reproduce the issue with QT4 applications shipped, the version I see the issue is available here: http://www.skype.com/intl/de/get-skype/on-your-computer/linux/downloading.static

intel i945GM
intel-git
libdrm-2.4.27
pixman-0.23.8
linux-3.1.0
xorg 1.11.1

Comment 1 Clemens Eisserer 2011-11-07 11:12:47 UTC

Created attachment 53262 [details]
skype menu

Comment 2 Chris Wilson 2011-11-07 12:12:18 UTC

Having just found a very, very similar bug, I think this is going to be fixed by:

commit 8e775cecccebe543d344721d45b2d43ee9f122b3
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Mon Nov 7 20:01:33 2011 +0000

    sna/gen3: Fix false reduction of ComponentAlpha with white source
    
    The principle behind the opertator reduction of WHITE * maskca is valid,
    except that we failed to account for the src/mask transposition when
    emitting the vertices - garbage ensued.
    
    Given that we agressively reduce the shader required for WHITE * maskca,
    it does not seem worthwhile to special case the primitive emitter as
    well.
    
    Reported-by: Clemens Eisserer <linuxhippy@gmail.com>
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=42676
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

Comment 3 Clemens Eisserer 2011-11-07 12:22:59 UTC

I can confirm the bug is fixed by your patch. Thanks!

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