render improvements

Michel Dänzer michel at
Tue Apr 19 09:00:14 PDT 2005

On Mon, 2005-18-04 at 18:58 -0400, Owen Taylor wrote:
> On Mon, 2005-04-18 at 18:00 -0400, Michel Dänzer wrote:
> > 
> > Just run a compositing manager on Xephyr and make any window
> > translucent. As soon as it stops being fully opaque, it becomes
> > invisible (except for some small, seemingly random areas, sometimes),
> > you only see the shadow behind it. So the global alpha value of the
> > window doesn't seem to be handled correctly.
> > 
> > If you can't reproduce it, I can create screenshots tomorrow at work.
> OK, fixed in xserver. 

Thanks, GNOME with xcompmgr is mostly fixed now, but I still get very
bad artifacts with KDE 3.4. The global alpha value of non-opaque windows
seems more or less random there now; I can only seem to reproduce a
similar effect with GNOME/xcompmgr by moving a translucent window out of
the left edge of the screen, so it seems to be related to clipping.

On a brighter note, software compositing performance seems comparable to
Mac OS X now, looking forward to Altivec optimizations. :)

Earthling Michel Dänzer      |     Debian (powerpc), X and DRI developer
Libre software enthusiast    |

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