https://bugs.freedesktop.org/show_bug.cgi?id=32296
--- Comment #15 from Chris Rankin rankincj@googlemail.com 2011-01-26 15:04:37 PST --- (In reply to comment #13)
If you compile with --enable-debug, it should print the hyperz status to stderr.
RADEON_HYPERZ=1 RADEON_DEBUG=hyperz
and then I get lots of lines like:
hyper-z features: hiz: 0 @ deadbeef
RV350 has no HiZ, so that's not unexpected. The can_hyperz flag does appear to be being set as well.