[MPlayer-dev-eng] Fast OpenGL playback

[Reimar =?UTF8?Q?D=F6ffinger?=]

Hi,
> > > -vo X11:     5.4 sec
> > > -vo gl2:     6.85 sec
> > > -vo gl :    ~7 sec
> > > -vo dga:     4.7 sec
> > > -vo vesa:   ~3.7 sec
> > > -vo gl_hack: 3.7 sec 
> > 
> > Those are all really slow vos. Much more interesting would be a
> > comparison against -vo xv or vidix, I would consider same speed as vo_vesa not
> > really good. You might also want to compare -vo gl:manyfmts (if your MPlayer version is
> > new enough).
> 
> -vo xv:          4.1 seconds
> -vo vidix:       (doesn't work for me)
> -vo gl:manyfmts  ~6.7 seconds
> 
> Unless I'm not understanding something right, 3.7 seconds is actually
> pretty darned good.  According to the Mpalyer benchmark outputs, I'm
> spending about 90% of the time in the VC module, about 5% of the time in
> the VO module, and 5% of the time in Sys (not sure what that accounts
> for).  So unless I'm forcing the decoder to use a suboptimal format
> (Mpeg-2, and I'm using Planar YV12), I don't think I have much room for
> improvement (the decoder alone takes about 3.2 seconds)

Well, for me vo_vesa is actually quite slow, and xv should be significiantly faster... I find those values at least a bit weird...

> > Actually I'd like to have a look at the code, maybe some of its ideas
> > can be used (although main reason for OpenGL support is still
> > portability).
> 
> Yeah, I figured that's why it is included.  For what I want to use it for,
> though (mpeg-2 -> textures in openGL), I can't really use any other type
> of VO (not that I'm aware of, anyway).  So for me I'm seeing a 2x speedup.

Well, you can use it for whatever you want ;-). It just means that there is little chance all of your changes make it into CVS, but I'm always happy
to take ideas...

> I'll clean up the code (a little bit) and send it to the list.

Thanks.

Greetings,
Reimar Döffinger