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| author | Kenneth Graunke <kenneth@whitecape.org> | 2015-02-25 16:08:14 -0800 |
|---|---|---|
| committer | Kenneth Graunke <kenneth@whitecape.org> | 2015-02-27 11:36:24 -0800 |
| commit | ea696be5ac097af621f10858d925a343a838be7a (patch) | |
| tree | 5fe6df5a13c0a89529f8e5e09ba602ebf3dab9d4 /src/mesa/drivers/dri/i965/brw_wm_surface_state.c | |
| parent | 4ebacf8aa67b1bfba7820f25536be98c7452dcb1 (diff) | |
| download | external_mesa3d-ea696be5ac097af621f10858d925a343a838be7a.zip external_mesa3d-ea696be5ac097af621f10858d925a343a838be7a.tar.gz external_mesa3d-ea696be5ac097af621f10858d925a343a838be7a.tar.bz2 | |
i965/fs: Patch the instruction generating discards; don't use CMP.Z.
CMP.Z doesn't work on Gen4-5 because the boolean isn't guaranteed to be
0 or 0xFFFFFFFF - only the low bit is defined.
We can call emit_bool_to_cond_code to generate the condition in f0.0;
the last instruction will generate the flag value. We can patch it to
use f0.1, and negate the condition.
Fixes discard tests on Gen4-5.
Haswell shader-db stats:
total instructions in shared programs: 5770279 -> 5769112 (-0.02%)
instructions in affected programs: 64342 -> 63175 (-1.81%)
helped: 1069
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_wm_surface_state.c')
0 files changed, 0 insertions, 0 deletions