i965 textured video crash

Matthias Hopf mhopf at suse.de
Tue Nov 7 06:45:19 PST 2006

On Nov 06, 06 07:22:16 -0800, Keith Packard wrote:
> On Mon, 2006-11-06 at 09:42 +0100, Luca Dionisi wrote:
> > Precisely, these sentences from opensuse site:
> >     *  Driver has neither pBuffer nor FBO support. When using a
> > composite manager all windows are rendered in software and only
> > compositing is hardware accelerated. Astonishingly, this works well
> > enough for most use cases. FBO support is supposed to be added to the
> > driver in the near future.
> That's not accurate though; we render in hardware, but to transform from
> 2D pixmap to 3D texture requires a copy through the CPU, which is of
> course ridiculous. Fixing that will be much easier when we have a memory
> manager shared between 2D and 3D, which is about the same time as we get
> FBO support.

Last time I checked (some time ago) I couldn't get pBuffer of FBO
extensions. Maybe that changed?

> >     * XVideo YV12 surfaces are hardware accelerated (when no composite
> > manager is used or for fullscreen unredirected windows), but due to a
> > bug in the driver the video will miss one of the color channels,
> > leading to false greenish/purple colors. This has to be investigated.
> I've never seen this myself and I'm not sure what it means.

Was a bug somewhere in the pixel shader pipeline, maybe even in the
high-level Mesa stuff.


Matthias Hopf <mhopf at suse.de>       __        __   __
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