Compositing issues with 30-bit RGB visuals
ku.b at gmx.de
Mon Oct 17 23:41:45 PDT 2011
I am not sure where to start and seek for input on a problem with KWin and
Compiz. They show very similiar wrong rendering of borders, shadows and
the logout screens.
In compiz is a RGBA buffer used to contruct window borders and shadows:
/* all pixmaps are ARGB32 */
format = XRenderFindStandardFormat (xdisplay, PictStandardARGB32);
A sreenshot suggests that the 8-bit buffers are blended as is into the
30-bit visuals. What is the correct way to blend in the final frame buffer
image with XRenderComposite()?
As a side note, the window contents are almost fine with the exception of
FF and GTK2 drawing areas.
developing for colour management
www.behrmann.name + www.oyranos.org
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