* by a vertex number (such as geometry shader inputs).
*/
static bool
-stage_uses_per_vertex_inputs(struct lower_io_state *state)
+is_per_vertex_input(struct lower_io_state *state, nir_variable *var)
{
gl_shader_stage stage = state->builder.shader->stage;
- return stage == MESA_SHADER_GEOMETRY;
+
+ return var->data.mode == nir_var_shader_in && !var->data.patch &&
+ (stage == MESA_SHADER_TESS_CTRL ||
+ stage == MESA_SHADER_TESS_EVAL ||
+ stage == MESA_SHADER_GEOMETRY);
}
-static unsigned
-get_io_offset(nir_deref_var *deref, nir_instr *instr,
- nir_ssa_def **vertex_index,
- nir_ssa_def **out_indirect,
- struct lower_io_state *state)
+static bool
+is_per_vertex_output(struct lower_io_state *state, nir_variable *var)
{
- nir_ssa_def *indirect = NULL;
- unsigned base_offset = 0;
-
- nir_builder *b = &state->builder;
- b->cursor = nir_before_instr(instr);
+ gl_shader_stage stage = state->builder.shader->stage;
+ return var->data.mode == nir_var_shader_out && !var->data.patch &&
+ stage == MESA_SHADER_TESS_CTRL;
+}
+static nir_ssa_def *
+get_io_offset(nir_builder *b, nir_deref_var *deref,
+ nir_ssa_def **vertex_index,
+ int (*type_size)(const struct glsl_type *))
+{
nir_deref *tail = &deref->deref;
/* For per-vertex input arrays (i.e. geometry shader inputs), keep the
*vertex_index = vtx;
}
+ /* Just emit code and let constant-folding go to town */
+ nir_ssa_def *offset = nir_imm_int(b, 0);
+
while (tail->child != NULL) {
const struct glsl_type *parent_type = tail->type;
tail = tail->child;
if (tail->deref_type == nir_deref_type_array) {
nir_deref_array *deref_array = nir_deref_as_array(tail);
- unsigned size = state->type_size(tail->type);
+ unsigned size = type_size(tail->type);
- base_offset += size * deref_array->base_offset;
+ offset = nir_iadd(b, offset,
+ nir_imm_int(b, size * deref_array->base_offset));
if (deref_array->deref_array_type == nir_deref_array_type_indirect) {
nir_ssa_def *mul =
nir_imul(b, nir_imm_int(b, size),
nir_ssa_for_src(b, deref_array->indirect, 1));
- indirect = indirect ? nir_iadd(b, indirect, mul) : mul;
+ offset = nir_iadd(b, offset, mul);
}
} else if (tail->deref_type == nir_deref_type_struct) {
nir_deref_struct *deref_struct = nir_deref_as_struct(tail);
+ unsigned field_offset = 0;
for (unsigned i = 0; i < deref_struct->index; i++) {
- base_offset +=
- state->type_size(glsl_get_struct_field(parent_type, i));
+ field_offset += type_size(glsl_get_struct_field(parent_type, i));
}
+ offset = nir_iadd(b, offset, nir_imm_int(b, field_offset));
}
}
- *out_indirect = indirect;
- return base_offset;
+ return offset;
}
static nir_intrinsic_op
load_op(struct lower_io_state *state,
- nir_variable_mode mode, bool per_vertex, bool has_indirect)
+ nir_variable_mode mode, bool per_vertex)
{
nir_intrinsic_op op;
switch (mode) {
case nir_var_shader_in:
- if (per_vertex) {
- op = has_indirect ? nir_intrinsic_load_per_vertex_input_indirect :
- nir_intrinsic_load_per_vertex_input;
- } else {
- op = has_indirect ? nir_intrinsic_load_input_indirect :
- nir_intrinsic_load_input;
- }
+ op = per_vertex ? nir_intrinsic_load_per_vertex_input :
+ nir_intrinsic_load_input;
+ break;
+ case nir_var_shader_out:
+ op = per_vertex ? nir_intrinsic_load_per_vertex_output :
+ nir_intrinsic_load_output;
break;
case nir_var_uniform:
- op = has_indirect ? nir_intrinsic_load_uniform_indirect :
- nir_intrinsic_load_uniform;
+ op = nir_intrinsic_load_uniform;
break;
default:
unreachable("Unknown variable mode");
{
struct lower_io_state *state = void_state;
+ nir_builder *b = &state->builder;
+
nir_foreach_instr_safe(block, instr) {
if (instr->type != nir_instr_type_intrinsic)
continue;
nir_variable_mode mode = intrin->variables[0]->var->data.mode;
- if (state->mode != -1 && state->mode != mode)
+ if (state->mode != nir_var_all && state->mode != mode)
+ continue;
+
+ if (mode != nir_var_shader_in &&
+ mode != nir_var_shader_out &&
+ mode != nir_var_uniform)
continue;
+ b->cursor = nir_before_instr(instr);
+
switch (intrin->intrinsic) {
case nir_intrinsic_load_var: {
- if (mode != nir_var_shader_in && mode != nir_var_uniform)
- continue;
-
- bool per_vertex = stage_uses_per_vertex_inputs(state) &&
- mode == nir_var_shader_in;
+ bool per_vertex =
+ is_per_vertex_input(state, intrin->variables[0]->var) ||
+ is_per_vertex_output(state, intrin->variables[0]->var);
- nir_ssa_def *indirect;
+ nir_ssa_def *offset;
nir_ssa_def *vertex_index;
- unsigned offset = get_io_offset(intrin->variables[0], &intrin->instr,
- per_vertex ? &vertex_index : NULL,
- &indirect, state);
+ offset = get_io_offset(b, intrin->variables[0],
+ per_vertex ? &vertex_index : NULL,
+ state->type_size);
nir_intrinsic_instr *load =
nir_intrinsic_instr_create(state->mem_ctx,
- load_op(state, mode, per_vertex,
- indirect));
+ load_op(state, mode, per_vertex));
load->num_components = intrin->num_components;
- unsigned location = intrin->variables[0]->var->data.driver_location;
- if (mode == nir_var_uniform) {
- load->const_index[0] = location;
- load->const_index[1] = offset;
- } else {
- load->const_index[0] = location + offset;
- }
+ load->const_index[0] =
+ intrin->variables[0]->var->data.driver_location;
if (per_vertex)
load->src[0] = nir_src_for_ssa(vertex_index);
- if (indirect)
- load->src[per_vertex ? 1 : 0] = nir_src_for_ssa(indirect);
+ load->src[per_vertex ? 1 : 0] = nir_src_for_ssa(offset);
if (intrin->dest.is_ssa) {
nir_ssa_dest_init(&load->instr, &load->dest,
}
case nir_intrinsic_store_var: {
- if (intrin->variables[0]->var->data.mode != nir_var_shader_out)
- continue;
+ assert(mode == nir_var_shader_out);
- nir_ssa_def *indirect;
+ nir_ssa_def *offset;
+ nir_ssa_def *vertex_index;
- unsigned offset = get_io_offset(intrin->variables[0], &intrin->instr,
- NULL, &indirect, state);
- offset += intrin->variables[0]->var->data.driver_location;
+ bool per_vertex =
+ is_per_vertex_output(state, intrin->variables[0]->var);
- nir_intrinsic_op store_op;
- if (indirect) {
- store_op = nir_intrinsic_store_output_indirect;
- } else {
- store_op = nir_intrinsic_store_output;
- }
+ offset = get_io_offset(b, intrin->variables[0],
+ per_vertex ? &vertex_index : NULL,
+ state->type_size);
+
+ nir_intrinsic_op store_op =
+ per_vertex ? nir_intrinsic_store_per_vertex_output :
+ nir_intrinsic_store_output;
nir_intrinsic_instr *store = nir_intrinsic_instr_create(state->mem_ctx,
store_op);
store->num_components = intrin->num_components;
- store->const_index[0] = offset;
nir_src_copy(&store->src[0], &intrin->src[0], store);
- if (indirect)
- store->src[1] = nir_src_for_ssa(indirect);
+ store->const_index[0] =
+ intrin->variables[0]->var->data.driver_location;
+
+ if (per_vertex)
+ store->src[1] = nir_src_for_ssa(vertex_index);
+
+ store->src[per_vertex ? 2 : 1] = nir_src_for_ssa(offset);
nir_instr_insert_before(&intrin->instr, &store->instr);
nir_instr_remove(&intrin->instr);
nir_lower_io_impl(overload->impl, mode, type_size);
}
}
+
+/**
+ * Return the offset soruce for a load/store intrinsic.
+ */
+nir_src *
+nir_get_io_offset_src(nir_intrinsic_instr *instr)
+{
+ switch (instr->intrinsic) {
+ case nir_intrinsic_load_input:
+ case nir_intrinsic_load_output:
+ case nir_intrinsic_load_uniform:
+ return &instr->src[0];
+ case nir_intrinsic_load_ubo:
+ case nir_intrinsic_load_ssbo:
+ case nir_intrinsic_load_per_vertex_input:
+ case nir_intrinsic_load_per_vertex_output:
+ case nir_intrinsic_store_output:
+ return &instr->src[1];
+ case nir_intrinsic_store_ssbo:
+ case nir_intrinsic_store_per_vertex_output:
+ return &instr->src[2];
+ default:
+ return NULL;
+ }
+}
+
+/**
+ * Return the vertex index source for a load/store per_vertex intrinsic.
+ */
+nir_src *
+nir_get_io_vertex_index_src(nir_intrinsic_instr *instr)
+{
+ switch (instr->intrinsic) {
+ case nir_intrinsic_load_per_vertex_input:
+ case nir_intrinsic_load_per_vertex_output:
+ return &instr->src[0];
+ case nir_intrinsic_store_per_vertex_output:
+ return &instr->src[1];
+ default:
+ return NULL;
+ }
+}
projects / mesa.git / blobdiff