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 <[email protected]> --- src/mesa/drivers/dri/i965/brw_fs_fp.cpp | 3 +++ 1 file changed, 3 insertions(+) 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; } -- 2.2.2 _______________________________________________ mesa-dev mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-dev
