[Dri-devel] Re: Radeon Clear Bug

[Jens O. <je...@tu...>]

Kevin E Martin wrote:
> 
> On Tue, Jun 04, 2002 at 05:05:05PM -0600, Jens Owen wrote:
> > Kevin,
> >
> > Have you seen any clear bugs when the server regenerates?
> 
> Not yet, but I haven't looked yet.  The code is not currently in a state
> that I can test this, but I will add it to the list of things for me to
> check out.
> 
> > After Linus asked the questions regarding locking optimizations for the
> > Radeon, I decided to explore the current policies in the Radeon driver.
> > After building a fully debugable server and running in a bare bones
> > environment, I noticed the screen wasn't clearing when the server
> > regenerated.
> 
> I'm not sure what you mean by "not clearing".  Is the problem that the
> root weave does not appear on server regeneration?

Yes.  Just the upper half.

> If so, then does the
> rest of the server run properly and just the first fill is not working.

Yes.  xrefresh fixes the root weave, too.

> > This problem goes away when the DRI is disabled, so it might be related
> > to using CP mode in the 2D driver.
> 
> I agree.
> 
> > This bug shows up on the TCL branch and the main development trunk.
> >
> > Would it be helpful if I dove into this deeper?  or do you already have
> > a fix for this?
> 
> It would be very helpful to dig deeper, if you have time.  If you figure
> out what's going on (or even better come up with a patch to fix it :-),
> please let me know what you find.

I'll take a look tonight and let you know if I find anything.

> I've just looked through my list of patches that I'm integrating and no
> one has addressed this problem.  I'm still mainly concentrating on
> getting the non-DRI Radeon driver in shape, but I've done a bit of clean
> up and patch integration on the CP based 2D code.  I'll let you know
> what I find when I finish integrating these 2D CP patches.
> 
> Thanks!
> Kevin

--                             /\
         Jens Owen            /  \/\ _    
  je...@tu...  /    \ \ \   Steamboat Springs, Colorado