Re: [SLE] ATI driver in 10.1 - dri or xv but not both -- mplayer -vo sdl (SDL)

On Sun, 2006-06-18 at 15:28 +0200, Hans du Plooy wrote:
Yes, that should work. mplayer -vo x11 -zoom works just as well for me,
but the CPU usage is higher, and when I play DVDs directly from disc it
becomes jerky.

I haven't benchmarked the differences, as I have an Athlon 64 3200+ with
2GB of RAM and a year-old GeForce 7800GTX 256MB, but you're probably
right. Executing SDL/GL atop of X11 is probably slower than direct
overlay framebuffer.

I did however find that for some reason the ATI driver doesn't enable
both DRI and XV by default.

The nVidia driver does _not_ use DRI, and I believe this is the case
with ATI's driver as well. nVidia and ATI provide their own libGL and
GLX support. nVidia tells you _not_ to enable DRI, and I assume ATI
does the same.

DRI is a completely different OpenGL capability from Precision Insight.
The ATI R100 (7500-8000 series) DRI driver, which was also adapted for
the R200 (8500-9200) series, was written by Precision Insight under
contract by the National Weather Service (IIRC?), independent of ATI.

This post on the Fedora Test/Development list seems to confirm this
fact:
https://www.redhat.com/archives/fedora-devel-list/2006-February/msg01178.html

Dunno who's fault it is.

Defaults in the driver, so ATI and nVidia.
There may be some reasons for this -- possibly issues with Xgl perhaps?

I added this to my xorg.conf under the device section for the card:
Option "VideoOverlay" "on"
Option "OpenGLOverlay" "off"
Maybe it will work for you? Considering that you have the same problem
on an nVidia chip and that mine worked fine with the same driver on a
different distro, maby this is, for once not the video card vendors'
fault :-)

The "Option" lines in the device sections are driver-specific. In
looking through the README for nVidia 1.0-8762 I don't see those
options.

http://download.nvidia.com/XFree86/Linux-x86/1.0-8762/README/index.html
http://download.nvidia.com/XFree86/Linux-x86_64/1.0-8762/README/index.html

Now there's a note about the XvMC which is on NV25+ in Appendix N:
http://download.nvidia.com/XFree86/Linux-x86_64/1.0-8178/README/appendix-n.html

But that support has been around since ForceWare 70-something
(1.0-7xxx), and I didn't have any problems back then.

But there _is_ this note in Appendix I (Known Issues):
http://download.nvidia.com/XFree86/Linux-x86_64/1.0-8762/README/appendix-l.html

"XVideo and the Composite X extension
XVideo will not work correctly when Composite is enabled. See
Appendix S, The X Composite Extension."

http://download.nvidia.com/XFree86/Linux-x86_64/1.0-8762/README/appendix-s.html

Fedora Core 5 ships with Composite and it is now enabled in nVidia's
ForceWare 85+ (1.0-85xx+) drivers. That's probably my issue and
unrelated -- and I should post no further on this SuSE List.

I need to update myself and see if it affects SuSE developments like
Compiz as well.


--
Bryan J. Smith Professional, technical annoyance
mailto:b.j.smith@xxxxxxxx http://thebs413.blogspot.com
----------------------------------------------------------
The existence of Linux has far more to do with the breakup
of AT&T's monopoly than anything Microsoft has ever done.



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