Bug 42035 - no way to turn off vline wait at runtime
Summary: no way to turn off vline wait at runtime
Status: RESOLVED INVALID
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: 7.6 (2010.12)
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: xf86-video-ati maintainers
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: 28771 34401
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Reported: 2011-10-20 01:57 UTC by Michal Suchanek
Modified: 2018-06-12 19:09 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments

Description Michal Suchanek 2011-10-20 01:57:25 UTC 
According to comments in bug 28771 a the xorg ddx is hardcoded to wait for vsync and patch is provided to hardcode it not to wait.

This is unacceptable. This should be runtime configurable, preferably per-application like dri.
Comment 1 Michel Dänzer 2011-10-20 02:38:29 UTC 
> According to comments in bug 28771 a the xorg ddx is hardcoded to wait for
> vsync

That's not true anymore, the vline waits (not vsync, that can be controlled via driconf) can be disabled with Option "SwapbuffersWait" "off".

> This should be runtime configurable, preferably per-application like dri.

That would require some xserver dri2 changes first, to allow the driver to tell the different cases apart. There's been some discussion about this on the xorg-devel list, started by Chris Wilson.
Comment 2 Adam Jackson 2018-06-12 19:09:33 UTC 
Mass closure: This bug has been untouched for more than six years, and is not
obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.

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