On Wed, 10 Apr 2002, Andrew P. Lentvorski wrote:
> On Tue, 9 Apr 2002, Branden Robinson wrote:
>
> > On Tue, Apr 09, 2002 at 04:11:28PM -0700, Andrew P. Lentvorski wrote:
> > > Problem: If a polygon which is being filled with a stipple intersects a
> > > clip region, the fill fails and paints the clipped region black.
> >
> > Here's a pair of X window dumps from before and after the window was
> > hidden and then re-exposed. Do they exhibit the correct behavior?
>
> Actually, yes. Your rendering engine does exactly the right thing. The
> reason why most of the 4 left rectangles disappear is that the call to
> XSetClipRectangles actually excludes them from being redrawn.
>
> If you had the bug, the 4 small rectangles on the right would be
> completely black.
>
> Since the Voodoo card gets this right, its a good indicator that the bug
> is probably in the ATI driver rather than the rendering architecture.
>
It renders correctly on an NVIDIA card as well. I don't think
a generic XAA bug of that sort would have remained undetected for
this long.
Mark.
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