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nir: Add a find_variable_with_[driver_]location helper

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We've hand-rolled this loop 10 places and those are just the ones I
found easily.

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5966>
This commit is contained in:
Jason Ekstrand
2020-07-22 23:37:27 -05:00
committed by Marge Bot
parent fc1363cc60
commit 5c5555a862
11 changed files with 79 additions and 88 deletions
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24
src/intel/compiler/brw_nir_lower_alpha_to_coverage.c
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@@ -88,15 +88,8 @@ brw_nir_lower_alpha_to_coverage(nir_shader *shader)
assert(shader->info.stage == MESA_SHADER_FRAGMENT);
/* Bail out early if we don't have gl_SampleMask */
bool is_sample_mask = false;
nir_foreach_shader_out_variable(var, shader) {
if (var->data.location == FRAG_RESULT_SAMPLE_MASK) {
is_sample_mask = true;
break;
}
}
if (!is_sample_mask)
if (!nir_find_variable_with_location(shader, nir_var_shader_out,
FRAG_RESULT_SAMPLE_MASK))
return;
nir_foreach_function(function, shader) {
@@ -115,16 +108,9 @@ brw_nir_lower_alpha_to_coverage(nir_shader *shader)
switch (intr->intrinsic) {
case nir_intrinsic_store_output:
nir_foreach_shader_out_variable(var, shader) {
int drvloc = var->data.driver_location;
if (nir_intrinsic_base(intr) == drvloc) {
out = var;
break;
}
}
if (out->data.mode != nir_var_shader_out)
continue;
out = nir_find_variable_with_driver_location(shader, nir_var_shader_out,
nir_intrinsic_base(intr));
assert(out->data.mode == nir_var_shader_out);
/* save gl_SampleMask instruction pointer */
if (out->data.location == FRAG_RESULT_SAMPLE_MASK) {