18848 – Cairo should support X11 MIT-SHM extension

Bug 18848 - Cairo should support X11 MIT-SHM extension

Summary: Cairo should support X11 MIT-SHM extension

Status:	RESOLVED NOTABUG

Alias:	None

Product:	cairo
Classification:	Unclassified
Component:	general (show other bugs)
Version:	1.9.1
Hardware:	All All

Importance:	medium enhancement
Assignee:	Carl Worth
QA Contact:	cairo-bugs mailing list

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Reported:	2008-12-02 03:20 UTC by Yann Droneaud
Modified:	2008-12-02 03:46 UTC (History)
CC List:	0 users

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Attachments

Description Yann Droneaud 2008-12-02 03:20:45 UTC

Under X11, Cairo should use the shared memory extension (MIT-SHM).

Comment 1 Yann Droneaud 2008-12-02 03:22:00 UTC

See patches and benchmark: 
http://www.ericbutler.net/blog/2008/06/cairo-xlib-and-the-shared-memory-extension/
Remarks:
http://www.ericbutler.net/blog/2008/07/adventures-in-x-programming/

Comment 2 Chris Wilson 2008-12-02 03:46:52 UTC

As indicated from the blog posts, using SHM is not a clear cut performance win (which is often due to causing pximap migration within the driver).
Moved to TODO.

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