[Mesa-dev] [PATCH 1/2] r600: fix viewport clipping magic.

[Dave Airlie]

> I have to NAK this series, but I was able to find something about the issue.
>
> If oViewport is used, VGT_REUSE_OFF must disable reuse. That's the correct fix.
>
> If oViewport is constant, reuse can be enabled, but
> VTE_VPORT_PROVOKE_DISABLE must be set.

Okay I can confirm setting VGT_REUSE_OFF fixed the bug. I haven't got time
this week to smash out real patches and test them, but I'll try and
get to it soon.

Dave.