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| author | Kenneth Graunke <kenneth@whitecape.org> | 2015-02-24 12:48:56 -0800 |
|---|---|---|
| committer | Kenneth Graunke <kenneth@whitecape.org> | 2015-03-19 16:14:51 -0700 |
| commit | 201aef9d1370ff524f856b725d2328c4f48199e8 (patch) | |
| tree | 7bd71c90ea89dc85a9c9f3fd0dc43f965ae0bb87 /src/mesa/drivers | |
| parent | 8a0946f3b1522e5f91afe14c8c3b22ba6009ed04 (diff) | |
| download | external_mesa3d-201aef9d1370ff524f856b725d2328c4f48199e8.zip external_mesa3d-201aef9d1370ff524f856b725d2328c4f48199e8.tar.gz external_mesa3d-201aef9d1370ff524f856b725d2328c4f48199e8.tar.bz2 | |
i965/fp: Emit discard jumps.
This should improve the performance of any shaders using the KIL
instruction. I'm a bit surprised we missed this.
Unfortunately, I have not been able to measure any performance
improvements from this patch. It does make ARB_fragment_program
behave similarly to GLSL code.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Diffstat (limited to 'src/mesa/drivers')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs_fp.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_fp.cpp b/src/mesa/drivers/dri/i965/brw_fs_fp.cpp index 6d08bf7..c4064da 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_fp.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_fp.cpp @@ -250,6 +250,9 @@ fs_visitor::emit_fragment_program_code() fs_reg(0.0f), BRW_CONDITIONAL_GE)); cmp->predicate = BRW_PREDICATE_NORMAL; cmp->flag_subreg = 1; + + if (brw->gen >= 6) + emit_discard_jump(); } break; } |