https://bugs.freedesktop.org/show_bug.cgi?id=39897

--- Comment #25 from Alex Deucher agd5f@yahoo.com 2011-10-03 09:18:30 PDT --- (In reply to comment #24)

R600_TILING=1 produces the rendering errors. Is it still worth a new bug report?

R600_TILING=1 enables 2D tiling of textures. It's off by default because there are still some corner cases with problems like this one. Enabling 1D texture tiling may work better and likely has fewer problematic cases.