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glsl/lower_output_reads: set invariant and precise flags on temporaries

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fixes a couple of deqp tests (on nvc0 and potential other drivers):
dEQP-GLES3.functional.shaders.invariance.highp.common_subexpression_1
dEQP-GLES3.functional.shaders.invariance.highp.common_subexpression_2
dEQP-GLES3.functional.shaders.invariance.highp.common_subexpression_3
dEQP-GLES3.functional.shaders.invariance.mediump.common_subexpression_1
dEQP-GLES3.functional.shaders.invariance.mediump.common_subexpression_2
dEQP-GLES3.functional.shaders.invariance.mediump.common_subexpression_3
dEQP-GLES3.functional.shaders.invariance.lowp.common_subexpression_1
dEQP-GLES3.functional.shaders.invariance.lowp.common_subexpression_2
dEQP-GLES3.functional.shaders.invariance.lowp.common_subexpression_3

CC: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Karol Herbst
2019-01-18 14:13:25 +01:00
parent 8002eaab6c
commit 987744be98
1 changed files with 4 additions and 0 deletions
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4
src/compiler/glsl/lower_output_reads.cpp
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@@ -101,6 +101,10 @@ output_read_remover::visit(ir_dereference_variable *ir)
void *var_ctx = ralloc_parent(ir->var);
temp = new(var_ctx) ir_variable(ir->var->type, ir->var->name,
ir_var_temporary);
/* copy flags which affect arithematical precision */
temp->data.invariant = ir->var->data.invariant;
temp->data.precise = ir->var->data.precise;
temp->data.precision = ir->var->data.precision;
_mesa_hash_table_insert(replacements, ir->var, temp);
ir->var->insert_after(temp);
}