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i965/vec4: nir_emit_if doesn't need to predicate based on all the channels

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v2: changed comment, as suggested by Matt Turner

Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Alejandro Piñeiro
2015-10-09 16:59:20 +02:00
parent 1095d837dc
commit 8ac3b525c7
1 changed files with 3 additions and 1 deletions
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src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+3 -1
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@@ -193,7 +193,9 @@ vec4_visitor::nir_emit_if(nir_if *if_stmt)
vec4_instruction *inst = emit(MOV(dst_null_d(), condition)); vec4_instruction *inst = emit(MOV(dst_null_d(), condition));
inst->conditional_mod = BRW_CONDITIONAL_NZ; inst->conditional_mod = BRW_CONDITIONAL_NZ;
emit(IF(BRW_PREDICATE_NORMAL)); /* We can just predicate based on the X channel, as the condition only
* goes on its own line */
emit(IF(BRW_PREDICATE_ALIGN16_REPLICATE_X));
nir_emit_cf_list(&if_stmt->then_list); nir_emit_cf_list(&if_stmt->then_list);