Comment # 5 on bug 93767 from Nicolai H�hnle

Hi Daniel, thanks for the apitrace and preliminary investigation. I can confirm
that the trace shows a rendering error on Verde, Bonaire, and Tonga. A
workaround for now is to set R600_DEBUG=nohyperz.

Could you please test whether the problem appears also on lower MSAA levels?

almos, I'm surprised that you're not seeing the glitch. What's your system
setup and hardware?

A proper fix may involve disabling ALLOW_EXPCLEAR for MSAA stencil.