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nir: fix marking XFB varyings as always active IO 

Components need to be handled, otherwise if a shader has two XFB
varyings at the same location, only one will be marked as always active.

Cc: mesa-stable
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri  <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16092>
This commit is contained in:
Samuel Pitoiset 2022-04-22 09:50:16 +02:00 committed by Marge Bot
parent 6873da0e42
commit 26f74f17d9
1 changed files with 4 additions and 4 deletions
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8
src/compiler/nir/nir_linking_helpers.c
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@ -957,14 +957,14 @@ nir_compact_varyings(nir_shader *producer, nir_shader *consumer,
void
nir_link_xfb_varyings(nir_shader *producer, nir_shader *consumer)
{
nir_variable *input_vars[MAX_VARYING] = { 0 };
nir_variable *input_vars[MAX_VARYING][4] = { 0 };
nir_foreach_shader_in_variable(var, consumer) {
if (var->data.location >= VARYING_SLOT_VAR0 &&
var->data.location - VARYING_SLOT_VAR0 < MAX_VARYING) {
unsigned location = var->data.location - VARYING_SLOT_VAR0;
input_vars[location] = var;
input_vars[location][var->data.location_frac] = var;
}
}
@ -976,8 +976,8 @@ nir_link_xfb_varyings(nir_shader *producer, nir_shader *consumer)
continue;
unsigned location = var->data.location - VARYING_SLOT_VAR0;
if (input_vars[location]) {
input_vars[location]->data.always_active_io = true;
if (input_vars[location][var->data.location_frac]) {
input_vars[location][var->data.location_frac]->data.always_active_io = true;
}
}
}