[Openchrome-users] I don't get the big picture with Mesa/XvMC

[John Robinson]

On 18/06/2006 13:55, Mario Emmenlauer wrote:
> Hi,
> 
> I'm using xorg-7.1 and xorg's via-driver, with Mesa and
> x11-drm from the dri-project's cvs. All I want is XvMC (for
> HDTV to work).
> 
> Now what I'm trying to understand is why I need Mesa
> in order to get XvMC for video? Would I not need Mesa with
> the openchrome-driver?
> 
> All manuals I found seem to assume that one wants 3D-
> acceleration together with XvMC anyways, so I could never
> conclude if it is indeed needed or just usually wanted.

 From the front page of http://dri.freedesktop.org/ : "The Direct 
Rendering Infrastructure, also known as the DRI, is a framework for 
allowing direct access to graphics hardware under the X Window System in 
a safe and efficient manner. It includes changes to the X server, to 
several client libraries, and to the kernel. The first major use for the 
DRI is to create fast OpenGL implementations."

So, no, you don't need Mesa, which as you say is for 3D acceleration, 
but you do need DRM in your kernel and DRI in your X which are required 
for, developed alongside and built with Mesa, which is why the manuals 
will tend to tell you about building DRM/DRI as part of building Mesa.

Cheers,

John.