Re: [Gnash-dev] Hardware acceleration support

[Gwenole Beauchesne]

Hi,

Le 2 mars 10 à 03:08, Rob Savoye a écrit :

> The original idea was to make them dynamically loadable plugins, but  
> for
> now the big render library works. (in the branch, that is).

Actually, this won't work for VAAPI at this time because you won't  
have the right VaapiGlobalContext initialized for OGL. I will look  
into his once the remaining bits are merged.

> So far I've tested this on an Nvidia
> (binary blob and libvdpau required), and Intel (965 required), and
> supposedly ATI works with libxvba.

This works on GMA500 too. The next change in Gnash would require an  
unreleased driver, though.

The other Intel driver is 'i965' but IMHO, this is a misnommer as this  
is G45 in reality. The H.264 decoder is not released yet. I will  
prepare you a list of drivers / versions.

> Unfortunately Gnash's Xv support has a major
> scaling bug...

I have an idea to workaround that but in my testing, this probably is  
not what we want in practise. We probably should refine the heuristics  
and have a canvas at most 2x smaller than the displayed dimensions so  
that it is better looking? Besides, my trick is very ugly. :-(

> So far I actually haven't seen much performance improvement in my
> testing, (mpeg4 n an FLV) but it looks like the bottleneck is in our
> renderers.

The performance improvement is really effective for H.264 videos  
playback only. You probably should downgrade your system to an Atom. ;-)

Regards,
Gwenole.