[compiz] White Boarders in AIGLX on non-decorated window types

James Jones jajones at nvidia.com
Wed Apr 18 10:42:02 PDT 2007

On Wednesday 18 April 2007 10:25, Vasek Potocek wrote:
> >> Oops, I haven't finished my e-mail... The reason why I posted just
> >> another workaround is that I consider it "less workaround" than the
> >> former fix (supposing this really was the same problem) and that it
> >> helps in more situations (like in GTK+ drag-drop, RYX said he had
> >> problems with this). But it's really hacky, it should apply depending on
> >> whether the described circumstances really happen and so, but as I said,
> >> it's temporary and only for the interested. I use it in my local clone
> >> and I actually haven't had many reasons to make it cleaner.
> >
> > OK, so a bug in the nvidia driver is causing this problem then. If the
> > change you had in your previous mail is working as a way to avoid the
> > problem, I'll be able to modify the code and make it work without having
> > it do anything wrong.
> >
> > - David
> I honestly can't say for sure, it works reliably for the p-o-t pixmaps
> generally, but I didn't have the particular problem with the decoration. My
> "normal" windows sized 32x32 or 128x128 or even 8x64 or anything like this
> were painted white (accompanied by a flood of "pixmap ... can't be bound to
> texture"). Sorry for splitting my mail so stupidly, this
> is how it started:
> > I haven't seen this problem nor searched the internet for more info on
> > this topic, so I'm sorry if I'm answering too
> >
>  > impetuously. But talking about restricting texture sizes, this looks to
>  > me similar to a problem of some NVIDIA cards (say: of my one) I have
>  > examined some time ago: when the fbConfig doesn't have its
>  > power-of-two textures cause a BadMatch error in glXCreatePixmap instead
>  > of being
> >
> > treated as rectangle ones as the GLX_EXT_tfp specification states.
> > Couldn't this be related?

Thanks for making this connection Vasek.  I was ignoring this thread since I 
assumed by AIGLX the users meant the DRI drivers.  It would be good to 
confirm users experiencing this problem are actually using NVIDIA cards with 
the binary driver, that the pixmaps being bound are power-of-two sized, and 
that the cards being used are those affected.

The affected cards are those that don't support the 
GL_ARB_texture_non_power_of_two extension.  This roughly means GeForce FX and 
older cards.

The first 100-series linux driver we release will contain the fix for this 

-James Jones


> - Vasek
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