[compiz] Problem with shadows and the new NVIDIA drivers

[Kristian Høgsberg]

On 10/2/06, Philip Langdale <philipl at overt.org> wrote:
> Hi all,
>
> I've been trying out the new NVIDIA drivers and everything seems to be working
> great except that shadows are rendered incorrectly - as solid black (or what
> ever the shadow colour happens to be) without the gradient effect. Setting
> the opacity level of the shadows makes no difference.
>
> This occurs with Beryl too, but I don't think it's actually a bug in either
> program but something to do with how I built them. If it was a widespread
> problem, I'm sure we'd have heard much more about it. I read one report
> that someone had seen this a few weeks back when using Redhat's AIGLX with
> an ATI card and had fixed it by compiling against a different version of
> Mesa. I've tried using the nvidia headers, mesa 6.5.1 and the latest
> mesa cvs - all with the same results. (And in all cases I've linked against
> the nvidia libraries).

Aside from the convolution filter bug David mentioned, we (fedora)
also had a bug in a patch to our mesa rpm which resulted in almost the
same artifact on ATI r100 based cards (Radeo 7000, 7500 etc).  That's
probably the cause of the mesa issue you describe.

Kristian