[Dri-devel] Re: 2 questions about radeon driver

[Michel <mi...@da...>]

On Tue, 2003-08-19 at 21:49, Alex Deucher wrote:
> 
> I'm attempting to convert the Xv code to use the CP.  how do you check 
> to find out if the driver is using CP or MMIO accel?  I considered 
> using info->directRenderingEnabled, but as far as I can see the 
> radeon can use the CP for accel even if the DRI is disabled.

No, it can't. There's also info->CPStarted which indicates whether the
CP is currently running.


> secondly, is there a way we could switch to software rendering if the
> total width or height of or all rendering windows is larger than 2048? 
> Since we seem to be hw limited by that, it'd be nice if the driver
> would just switch to software after 2048 rather than just showing a
> blank window or in some cases locking up the video card.  It might be
> too much of a pain in the butt though...

(I assume you mean OpenGL software rendering)

I don't think this is possible with the current scheme, we simply need
to disable the DRI if the virtual resolution exceeds 2048 in either
dimension.


-- 
Earthling Michel Dänzer   \  Debian (powerpc), XFree86 and DRI developer
Software libre enthusiast  \     http://svcs.affero.net/rm.php?r=daenzer