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## glitz
Glitz is an OpenGL image compositing library. Glitz provides Porter/Duff compositing of images and implicit mask generation for geometric primitives including trapezoids, triangles, and rectangles.
The semantics of glitz are designed to precisely match the specification of the X Render extension. Glitz does not only implement X Render features like component alpha and image transformations, but also support for additional features like convolution filters and color gradients, which are not currently part of the X Render specification.
The performance and capabilities of glitz are much dependent on graphics hardware. Glitz does not in any way handle software fall-backs when graphics hardware is insufficient. However, glitz will report if any requested operation cannot be carried out by graphics hardware, hence making a higher level software layer responsible for appropriate actions.
Glitz can be used as a stand-alone layer above OpenGL but is also designed to act as a backend for [[cairo|http://cairographics.org/]], providing it with OpenGL accelerated output.
### Source Repository Access
# Anonymous access:
$ git clone git://git.freedesktop.org/git/glitz
# Developer access:
$ git clone ssh+git://git.freedesktop.org/git/glitz
The glitzinfo and rendertest modules might also be of interest:
$ cvs -d:pserver:anoncvs@cvs.freedesktop.org:/cvs/cairo login
CVS password: <hit return>
$ cvs -d:pserver:anoncvs@cvs.freedesktop.org:/cvs/cairo co glitzinfo
$ cvs -d:pserver:anoncvs@cvs.freedesktop.org:/cvs/cairo co rendertest
### Download
Development snapshots of glitz are available for download [[here|http://cairographics.org/snapshots/]].
### Examples
Several test/demo [[applications|http://www.cs.umu.se/~c99drn]] are available.
### Screenshots
* [[rendertest]] <-- (No link?)
### Documentation
The USENIX'04 freenix track [[paper|http://www.usenix.org/events/usenix04/tech/freenix/nilsson.html]].
-- Main.[[DavidReveman]] - 20 Jul 2004
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