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nir/lower_alpha_test: fix use with lowered io

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Acked-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28463>
This commit is contained in:
Mike Blumenkrantz 2024-03-18 13:11:56 -04:00 • committed by Marge Bot
parent 842ac5059a
commit 9af9446127
1 changed files with 13 additions and 16 deletions
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29
src/compiler/nir/nir_lower_alpha_test.c
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@ -41,6 +41,12 @@ struct alpha_test_state {
const gl_state_index16 *alpha_ref_state_tokens;
};
static bool
is_color_output(int location)
{
return location == FRAG_RESULT_COLOR || location == FRAG_RESULT_DATA0;
}
static bool
lower(nir_builder *b, nir_intrinsic_instr *intr, void *data)
{
@ -50,29 +56,20 @@ lower(nir_builder *b, nir_intrinsic_instr *intr, void *data)
switch (intr->intrinsic) {
case nir_intrinsic_store_deref:
out = nir_intrinsic_get_var(intr, 0);
if (out->data.mode != nir_var_shader_out)
return false;
if (!is_color_output(out->data.location))
return false;
break;
case nir_intrinsic_store_output:
/* already had i/o lowered.. lookup the matching output var: */
nir_foreach_shader_out_variable(var, b->shader) {
int drvloc = var->data.driver_location;
if (nir_intrinsic_base(intr) == drvloc) {
out = var;
break;
}
}
assume(out);
if (!is_color_output(nir_intrinsic_io_semantics(intr).location))
return false;
break;
default:
return false;
}
if (out->data.mode != nir_var_shader_out)
return false;
if (out->data.location != FRAG_RESULT_COLOR &&
out->data.location != FRAG_RESULT_DATA0)
return false;
b->cursor = nir_before_instr(&intr->instr);
nir_def *alpha;