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st/mesa: implement key->persample_shading for lowered IO

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It was only done for variables.

Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31994>
This commit is contained in:
Marek Olšák
2024-10-29 19:42:26 -04:00
committed by Marge Bot
parent 2a9d590b6c
commit a21320ec47
1 changed files with 21 additions and 2 deletions
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23
src/mesa/state_tracker/st_program.c
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@@ -31,6 +31,7 @@
*/
#include "nir_builder.h"
#include "main/errors.h"
#include "main/hash.h"
@@ -700,6 +701,19 @@ lower_ucp(struct st_context *st,
}
}
static bool
force_persample_shading(struct nir_builder *b, nir_intrinsic_instr *intr,
void *data)
{
if (intr->intrinsic == nir_intrinsic_load_barycentric_pixel ||
intr->intrinsic == nir_intrinsic_load_barycentric_centroid) {
intr->intrinsic = nir_intrinsic_load_barycentric_sample;
return true;
}
return false;
}
static struct st_common_variant *
st_create_common_variant(struct st_context *st,
struct gl_program *prog,
@@ -984,8 +998,13 @@ st_create_fp_variant(struct st_context *st,
if (key->persample_shading) {
nir_shader *shader = state.ir.nir;
nir_foreach_shader_in_variable(var, shader)
var->data.sample = true;
if (shader->info.io_lowered) {
nir_shader_intrinsics_pass(shader, force_persample_shading,
nir_metadata_all, NULL);
} else {
nir_foreach_shader_in_variable(var, shader)
var->data.sample = true;
}
/* In addition to requiring per-sample interpolation, sample shading
* changes the behaviour of gl_SampleMaskIn, so we need per-sample shading