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Bug 1245417

Summary: sdl: backing store enabled by befault, causes tearing
Product: Red Hat Enterprise Linux 7 Reporter: Wade Berrier <wberrier>
Component: SDLAssignee: Wim Taymans <wtaymans>
Status: CLOSED ERRATA QA Contact: Desktop QE <desktop-qa-list>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.1CC: tpelka, wtaymans
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-11-19 09:22:24 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Wade Berrier 2015-07-22 03:26:50 UTC 
Description of problem:  sdl is detecting that backing store is enabled, and tearing in may apps results.


Version-Release number of selected component (if applicable): 1.2.15-11


How reproducible: Every time


Steps to Reproduce:
1.  run sdl 1.2 based app with lots of movement (ie: video playback or game)
2.  notice there are many screen tears

Actual results:

Tearing

Expected results:

No tearing

Additional info:

This bug has a long history and most distributions (including Fedora, see bug 1073057) patch libsdl to solve the issue.  The referenced bug has a patch that fixes the issue, and still allows the backing store to be enabled by an app by app basis based on an environment variable.

Without this fix, graphical sdl apps are quite painful to use.
Comment 9 errata-xmlrpc 2015-11-19 09:22:24 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2277.html