[Xorg] Re: Damage/Composite + direct rendering clients

[Alex Deucher]

--- Andy Ritger <aritger at nvidia.com> wrote:
> 
[snip]
> 
> - A Video Overlay Xv Adaptor is obviously fundamentally incompatible
>   with Damage/Composite.  Should X drivers no longer advertise
>   Video Overlay Xv adaptors if they are running in an X server that
>   includes Composite support?
> 

Many video overlays support alpha blending with the graphics layer,
it's just that support was never implemented since xfree86 never
supported it.  I wrote a patch for radeon a while back.  As I recall,
it should also be possible with r128 and savage hardware, although I
haven't tested on those chips as of yet. it may also be possible on
other chips.
radeon patch:
http://www.botchco.com/alex/radeon/Xv/xv_alpha/radeon_xvalpha.diff

OT: radeon patch that enables Xv gamma correction:
http://www.botchco.com/alex/radeon/Xv/xv_gamma/radeon_video_gamma.diff

Alex

> 
> 
> Feedback very welcome.
> 
> Thanks,
> - Andy
> 
> 



	
		
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