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intel/fs: Use compare_func for wm_prog_key::alpha_test_func

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Because 0 is no longer a recognizable value (it's NEVER, which isn't a
good default), we add an emit_alpha_test bool to tell the back-end when
to bother alpha testing.  This lets us only touch crocus with the
change.

Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14157>
This commit is contained in:
Jason Ekstrand
2021-12-09 18:21:14 -06:00
committed by Marge Bot
parent 460a953df5
commit a1de102479
4 changed files with 23 additions and 37 deletions
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3
src/intel/compiler/brw_compiler.h
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@@ -486,6 +486,8 @@ struct brw_wm_prog_key {
bool stats_wm:1;
bool flat_shade:1;
unsigned nr_color_regions:5;
bool emit_alpha_test:1;
enum compare_func alpha_test_func:3; /* < For Gfx4/5 MRT alpha test */
bool alpha_test_replicate_alpha:1;
bool alpha_to_coverage:1;
bool clamp_fragment_color:1;
@@ -499,7 +501,6 @@ struct brw_wm_prog_key {
uint8_t color_outputs_valid;
uint64_t input_slots_valid;
GLenum alpha_test_func; /* < For Gfx4/5 MRT alpha test */
float alpha_test_ref;
};