https://bugs.freedesktop.org/show_bug.cgi?id=29835
Eric Anholt <e...@anholt.net> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #3 from Eric Anholt <e...@anholt.net> 2010-08-31 15:44:34 PDT ---
Nope, it really was about discard. We weren't telling swrast and 965 that a
pixel kill happened, so depth writes went ahead and then those backfaces would
get culled (sometimes, depending on the order the triangles were processed).
piglit:
commit 99c3ae0b4889af94b98fd8722e4b501764741263
Author: Eric Anholt <e...@anholt.net>
Date: Tue Aug 31 12:36:31 2010 -0700
glsl-fs-discard-02: Test that early depth writes don't happen with
"discard"
mesa:
commit 9b075cb9fa9eb6a95d0816283ef01ae72dafa680
Author: Eric Anholt <e...@anholt.net>
Date: Tue Aug 31 13:02:59 2010 -0700
ir_to_mesa: When emitting a pixel kill, flag that we did so.
Both i965 and swrast rely on UsesKill to determine whether to do early
depth writes. Fixes glsl-fs-discard-02.
Bug #29835.
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