Comment # 16 on bug 108893 from Michel Dänzer

(In reply to supercoolemail from comment #11)
>     42.80%  Gothic2.exe     radeonsi_dri.so         [.]
> _mesa_unpack_depth_span

It would be interesting to know where _mesa_unpack_depth_span is getting called
from. Can you enable call graphs for the perf data gathering and reporting? (It
might be easier to use sysprof and attach the profile data saved from that)