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nir: Use deref instructions in lower_constant_initializers

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Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Acked-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Jason Ekstrand
2018-03-16 12:08:15 -07:00
parent 85f4149f8a
commit d7b0be48ef
3 changed files with 39 additions and 84 deletions
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src/compiler/nir/nir_lower_constant_initializers.c
+39 -18
View File
@@ -24,18 +24,44 @@
#include "nir.h"
#include "nir_builder.h"
static bool
deref_apply_constant_initializer(nir_deref_var *deref, void *state)
static void
build_constant_load(nir_builder *b, nir_deref_instr *deref, nir_constant *c)
{
struct nir_builder *b = state;
nir_load_const_instr *initializer =
nir_deref_get_const_initializer_load(b->shader, deref);
nir_builder_instr_insert(b, &initializer->instr);
nir_store_deref_var(b, deref, &initializer->def, 0xf);
return true;
if (glsl_type_is_vector_or_scalar(deref->type)) {
nir_load_const_instr *load =
nir_load_const_instr_create(b->shader,
glsl_get_vector_elements(deref->type),
glsl_get_bit_size(deref->type));
load->value = c->values[0];
nir_builder_instr_insert(b, &load->instr);
nir_store_deref(b, deref, &load->def, ~0);
} else if (glsl_type_is_matrix(deref->type)) {
unsigned cols = glsl_get_matrix_columns(deref->type);
unsigned rows = glsl_get_vector_elements(deref->type);
unsigned bit_size = glsl_get_bit_size(deref->type);
for (unsigned i = 0; i < cols; i++) {
nir_load_const_instr *load =
nir_load_const_instr_create(b->shader, rows, bit_size);
load->value = c->values[i];
nir_builder_instr_insert(b, &load->instr);
nir_store_deref(b, nir_build_deref_array(b, deref, nir_imm_int(b, i)),
&load->def, ~0);
}
} else if (glsl_type_is_struct(deref->type)) {
unsigned len = glsl_get_length(deref->type);
for (unsigned i = 0; i < len; i++) {
build_constant_load(b, nir_build_deref_struct(b, deref, i),
c->elements[i]);
}
} else {
assert(glsl_type_is_array(deref->type));
unsigned len = glsl_get_length(deref->type);
for (unsigned i = 0; i < len; i++) {
build_constant_load(b,
nir_build_deref_array(b, deref, nir_imm_int(b, i)),
c->elements[i]);
}
}
}
static bool
@@ -51,13 +77,8 @@ lower_const_initializer(struct nir_builder *b, struct exec_list *var_list)
progress = true;
nir_deref_var deref;
deref.deref.deref_type = nir_deref_type_var,
deref.deref.child = NULL;
deref.deref.type = var->type,
deref.var = var;
nir_deref_foreach_leaf(&deref, deref_apply_constant_initializer, b);
build_constant_load(b, nir_build_deref_var(b, var),
var->constant_initializer);
var->constant_initializer = NULL;
}