Experimental options

[Alex Deucher]

On Mon, 13 Dec 2004 23:13:17 -0500 (EST), Vladimir Dergachev
<volodya at mindspring.com> wrote:
> 
> 
> >>>> well, the drm is only used if 3d is enabled.  but if you don't have
> >>>> enough ram for 3d or you don't want to use the dri, the driver falls
> >>>> back to MMIO.  It'd be nice to use the drm for 2d all the time
> >>>> assuming the drm is available for your platform.
> >>>
> >>> I admit I don't know the dri code that well, but it seemed to me that
> >>> depth buffer (for instance..) was allocated dynamically in a function
> >>> that allocates context, right ?
> >>
> >> no, the back and depth buffers are allocated statically when the server starts.
> >
> > No, they aren't. Obviously though, 3D acceleration isn't enabled if they
> > can't fit into the available memory.
> 
> Well, I just don't see any checks for buffer size in
> ati/radeon_dri.c::RADEONDRIScreenInit()
> 

see radeon_driver.c::RADEONScreenInit() lines 4856 to 4924.

Alex

> If they are made than it is likely in generic DRI code, in which case this
> should be worked around there first.
> 
>                      best
> 
>                       Vladimir Dergachev
> 
> 
> 
> >
> >
> > --
> > Earthling Michel Dänzer      |     Debian (powerpc), X and DRI developer
> > Libre software enthusiast    |   http://svcs.affero.net/rm.php?r=daenzer
> >
>