[Xorg] XComposite, XDamage Extension with Xvideo or GL
keithp at keithp.com
Fri Aug 6 10:45:24 PDT 2004
Around 19 o'clock on Aug 6, "Amir Bukhari" wrote:
> Redirect OpenGL application to backing store pixmap does not work with
> Composite Extension (in Manual Mode) (Xserver always draw).
Correct. Fixing GLX to draw to off-screen memory will require additional
> Xvideo uses the overlay feature of the video cards to draw the video on the
> screen, which bring trouble with composite extension. I heared there is a
> discussion about how to get Xvideo to work with Composite extension, is that
For simple decoration and animation hacks, the overlays will "work", but
for more sophisticated manipulation, the drivers need to be modified to
use the 3D texturing engine to convert the YUV image to RGB data in the
off-screen pixmap. The kdrive-based Xati server demonstrates how to do
that for R128 and R100 hardware.
The XFree86-based Matrox driver has code to use the texture engine, but
will need a modest amount of work to make it support Composite correctly.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 228 bytes
Desc: not available
More information about the xorg