https://bugs.freedesktop.org/show_bug.cgi?id=24818
--- Comment #11 from Andy Furniss lists@andyfurniss.entadsl.com 2010-11-18 04:43:04 PST --- (In reply to comment #9)
Good news, r600g doesn't have this bug! Just tested mesa git c48ae0b6eddc71831ea0ea480a0177523ae6ee76, and shadowtex looked fine.
This has regressed with 600g now.
I can't point to a specific commit, but roughly it regressed at the time when 600g + tiling started to work with demos like readpix and pixeltest.