(In reply to Daniel Scharrer from comment #8)
> The Mesa patch from bug 88561 comment 6 fixes this for me - at least the
> glitches with the posted apitrace.

Hi Daniel, 

Thanks for the information. The patch from Marek significantly reduces the
number of artifacts in Dota 2, but it does not completely fix the issue and I
still see a few artifacts per second. It seems that this bug and the Portal bug
are related, but there is still an underlying bug somewhere.

Thanks,
sarnex