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-rw-r--r--src/intel/compiler/brw_fs.h1
-rw-r--r--src/intel/compiler/brw_fs_nir.cpp30
-rw-r--r--src/intel/compiler/brw_fs_visitor.cpp38
-rw-r--r--src/intel/compiler/brw_nir.c75
4 files changed, 74 insertions, 70 deletions
diff --git a/src/intel/compiler/brw_fs.h b/src/intel/compiler/brw_fs.h
index e230b5e0dd9..6c8c0275a76 100644
--- a/src/intel/compiler/brw_fs.h
+++ b/src/intel/compiler/brw_fs.h
@@ -175,7 +175,6 @@ public:
fs_reg *emit_samplepos_setup();
fs_reg *emit_sampleid_setup();
fs_reg *emit_samplemaskin_setup();
- fs_reg *emit_vs_system_value(int location);
void emit_interpolation_setup_gen4();
void emit_interpolation_setup_gen6();
void compute_sample_position(fs_reg dst, fs_reg int_sample_pos);
diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp
index d90eaad32ba..779d74d915d 100644
--- a/src/intel/compiler/brw_fs_nir.cpp
+++ b/src/intel/compiler/brw_fs_nir.cpp
@@ -89,39 +89,11 @@ emit_system_values_block(nir_block *block, fs_visitor *v)
unreachable("should be lowered by lower_vertex_id().");
case nir_intrinsic_load_vertex_id_zero_base:
- assert(v->stage == MESA_SHADER_VERTEX);
- reg = &v->nir_system_values[SYSTEM_VALUE_VERTEX_ID_ZERO_BASE];
- if (reg->file == BAD_FILE)
- *reg = *v->emit_vs_system_value(SYSTEM_VALUE_VERTEX_ID_ZERO_BASE);
- break;
-
case nir_intrinsic_load_base_vertex:
- assert(v->stage == MESA_SHADER_VERTEX);
- reg = &v->nir_system_values[SYSTEM_VALUE_BASE_VERTEX];
- if (reg->file == BAD_FILE)
- *reg = *v->emit_vs_system_value(SYSTEM_VALUE_BASE_VERTEX);
- break;
-
case nir_intrinsic_load_instance_id:
- assert(v->stage == MESA_SHADER_VERTEX);
- reg = &v->nir_system_values[SYSTEM_VALUE_INSTANCE_ID];
- if (reg->file == BAD_FILE)
- *reg = *v->emit_vs_system_value(SYSTEM_VALUE_INSTANCE_ID);
- break;
-
case nir_intrinsic_load_base_instance:
- assert(v->stage == MESA_SHADER_VERTEX);
- reg = &v->nir_system_values[SYSTEM_VALUE_BASE_INSTANCE];
- if (reg->file == BAD_FILE)
- *reg = *v->emit_vs_system_value(SYSTEM_VALUE_BASE_INSTANCE);
- break;
-
case nir_intrinsic_load_draw_id:
- assert(v->stage == MESA_SHADER_VERTEX);
- reg = &v->nir_system_values[SYSTEM_VALUE_DRAW_ID];
- if (reg->file == BAD_FILE)
- *reg = *v->emit_vs_system_value(SYSTEM_VALUE_DRAW_ID);
- break;
+ unreachable("should be lowered by brw_nir_lower_vs_inputs().");
case nir_intrinsic_load_invocation_id:
if (v->stage == MESA_SHADER_TESS_CTRL)
diff --git a/src/intel/compiler/brw_fs_visitor.cpp b/src/intel/compiler/brw_fs_visitor.cpp
index dd09fbdd64c..758c8bf44a9 100644
--- a/src/intel/compiler/brw_fs_visitor.cpp
+++ b/src/intel/compiler/brw_fs_visitor.cpp
@@ -32,44 +32,6 @@
using namespace brw;
-fs_reg *
-fs_visitor::emit_vs_system_value(int location)
-{
- fs_reg *reg = new(this->mem_ctx)
- fs_reg(ATTR, 4 * _mesa_bitcount_64(nir->info.inputs_read),
- BRW_REGISTER_TYPE_D);
-
- switch (location) {
- case SYSTEM_VALUE_BASE_VERTEX:
- reg->offset = 0;
- break;
- case SYSTEM_VALUE_BASE_INSTANCE:
- reg->offset = REG_SIZE;
- break;
- case SYSTEM_VALUE_VERTEX_ID:
- unreachable("should have been lowered");
- case SYSTEM_VALUE_VERTEX_ID_ZERO_BASE:
- reg->offset = 2 * REG_SIZE;
- break;
- case SYSTEM_VALUE_INSTANCE_ID:
- reg->offset = 3 * REG_SIZE;
- break;
- case SYSTEM_VALUE_DRAW_ID:
- if (nir->info.system_values_read &
- (BITFIELD64_BIT(SYSTEM_VALUE_BASE_VERTEX) |
- BITFIELD64_BIT(SYSTEM_VALUE_BASE_INSTANCE) |
- BITFIELD64_BIT(SYSTEM_VALUE_VERTEX_ID_ZERO_BASE) |
- BITFIELD64_BIT(SYSTEM_VALUE_INSTANCE_ID)))
- reg->nr += 4;
- reg->offset = 0;
- break;
- default:
- unreachable("not reached");
- }
-
- return reg;
-}
-
/* Sample from the MCS surface attached to this multisample texture. */
fs_reg
fs_visitor::emit_mcs_fetch(const fs_reg &coordinate, unsigned components,
diff --git a/src/intel/compiler/brw_nir.c b/src/intel/compiler/brw_nir.c
index 2c44d8f1828..a9d909e8db0 100644
--- a/src/intel/compiler/brw_nir.c
+++ b/src/intel/compiler/brw_nir.c
@@ -259,18 +259,84 @@ brw_nir_lower_vs_inputs(nir_shader *nir,
if (!is_scalar)
return;
+ /* Whether or not we have any system generated values. gl_DrawID is not
+ * included here as it lives in its own vec4.
+ */
+ const bool has_sgvs =
+ nir->info.system_values_read &
+ (BITFIELD64_BIT(SYSTEM_VALUE_BASE_VERTEX) |
+ BITFIELD64_BIT(SYSTEM_VALUE_BASE_INSTANCE) |
+ BITFIELD64_BIT(SYSTEM_VALUE_VERTEX_ID_ZERO_BASE) |
+ BITFIELD64_BIT(SYSTEM_VALUE_INSTANCE_ID));
+
+ const unsigned num_inputs = _mesa_bitcount_64(nir->info.inputs_read);
+
nir_foreach_function(function, nir) {
if (!function->impl)
continue;
+ nir_builder b;
+ nir_builder_init(&b, function->impl);
+
nir_foreach_block(block, function->impl) {
- nir_foreach_instr(instr, block) {
+ nir_foreach_instr_safe(instr, block) {
if (instr->type != nir_instr_type_intrinsic)
continue;
nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
- if (intrin->intrinsic == nir_intrinsic_load_input) {
+ switch (intrin->intrinsic) {
+ case nir_intrinsic_load_base_vertex:
+ case nir_intrinsic_load_base_instance:
+ case nir_intrinsic_load_vertex_id_zero_base:
+ case nir_intrinsic_load_instance_id:
+ case nir_intrinsic_load_draw_id: {
+ b.cursor = nir_after_instr(&intrin->instr);
+
+ /* gl_VertexID and friends are stored by the VF as the last
+ * vertex element. We convert them to load_input intrinsics at
+ * the right location.
+ */
+ nir_intrinsic_instr *load =
+ nir_intrinsic_instr_create(nir, nir_intrinsic_load_input);
+ load->src[0] = nir_src_for_ssa(nir_imm_int(&b, 0));
+
+ nir_intrinsic_set_base(load, num_inputs);
+ switch (intrin->intrinsic) {
+ case nir_intrinsic_load_base_vertex:
+ nir_intrinsic_set_component(load, 0);
+ break;
+ case nir_intrinsic_load_base_instance:
+ nir_intrinsic_set_component(load, 1);
+ break;
+ case nir_intrinsic_load_vertex_id_zero_base:
+ nir_intrinsic_set_component(load, 2);
+ break;
+ case nir_intrinsic_load_instance_id:
+ nir_intrinsic_set_component(load, 3);
+ break;
+ case nir_intrinsic_load_draw_id:
+ /* gl_DrawID is stored right after gl_VertexID and friends
+ * if any of them exist.
+ */
+ nir_intrinsic_set_base(load, num_inputs + has_sgvs);
+ nir_intrinsic_set_component(load, 0);
+ break;
+ default:
+ unreachable("Invalid system value intrinsic");
+ }
+
+ load->num_components = 1;
+ nir_ssa_dest_init(&load->instr, &load->dest, 1, 32, NULL);
+ nir_builder_instr_insert(&b, &load->instr);
+
+ nir_ssa_def_rewrite_uses(&intrin->dest.ssa,
+ nir_src_for_ssa(&load->dest.ssa));
+ nir_instr_remove(&intrin->instr);
+ break;
+ }
+
+ case nir_intrinsic_load_input: {
/* Attributes come in a contiguous block, ordered by their
* gl_vert_attrib value. That means we can compute the slot
* number for an attribute by masking out the enabled attributes
@@ -280,6 +346,11 @@ brw_nir_lower_vs_inputs(nir_shader *nir,
int slot = _mesa_bitcount_64(nir->info.inputs_read &
BITFIELD64_MASK(attr));
nir_intrinsic_set_base(intrin, slot);
+ break;
+ }
+
+ default:
+ break; /* Nothing to do */
}
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 13:01:41 +0000