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nir/lower_indirect_derefs: Support interp_var_at intrinsics

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This fixes the fs-interpolateAtCentroid-block-array piglit test on i965.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: mesa-stable@lists.freedesktop.org
This commit is contained in:
Jason Ekstrand
2018-03-20 12:12:12 -07:00
parent 0517d65f96
commit 6018f5b079
1 changed files with 11 additions and 2 deletions
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13
src/compiler/nir/nir_lower_indirect_derefs.c
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@@ -95,9 +95,15 @@ emit_load_store(nir_builder *b, nir_intrinsic_instr *orig_instr,
if (src == NULL) {
/* This is a load instruction */
nir_intrinsic_instr *load =
nir_intrinsic_instr_create(b->shader, nir_intrinsic_load_var);
nir_intrinsic_instr_create(b->shader, orig_instr->intrinsic);
load->num_components = orig_instr->num_components;
load->variables[0] = nir_deref_var_clone(deref, load);
/* Copy over any sources. This is needed for interp_var_at */
for (unsigned i = 0;
i < nir_intrinsic_infos[orig_instr->intrinsic].num_srcs; i++)
nir_src_copy(&load->src[i], &orig_instr->src[i], load);
unsigned bit_size = orig_instr->dest.ssa.bit_size;
nir_ssa_dest_init(&load->instr, &load->dest,
load->num_components, bit_size, NULL);
@@ -142,6 +148,9 @@ lower_indirect_block(nir_block *block, nir_builder *b,
nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
if (intrin->intrinsic != nir_intrinsic_load_var &&
intrin->intrinsic != nir_intrinsic_interp_var_at_centroid &&
intrin->intrinsic != nir_intrinsic_interp_var_at_sample &&
intrin->intrinsic != nir_intrinsic_interp_var_at_offset &&
intrin->intrinsic != nir_intrinsic_store_var)
continue;
@@ -158,7 +167,7 @@ lower_indirect_block(nir_block *block, nir_builder *b,
b->cursor = nir_before_instr(&intrin->instr);
if (intrin->intrinsic == nir_intrinsic_load_var) {
if (intrin->intrinsic != nir_intrinsic_store_var) {
nir_ssa_def *result;
emit_load_store(b, intrin, intrin->variables[0],
&intrin->variables[0]->deref, &result, NULL);