nir: add nir_var_shader_storage
[mesa.git] / src / glsl / nir / nir_lower_io.c
index af87c13e17a6a5d0a54ca7e0ee3cfb41ffc5e0f7..a9dd77691b2126d229694f895adfee49de5c5fe2 100644 (file)
@@ -69,26 +69,25 @@ type_size(const struct glsl_type *type)
       return 0;
    case GLSL_TYPE_VOID:
    case GLSL_TYPE_ERROR:
+   case GLSL_TYPE_DOUBLE:
       unreachable("not reached");
    }
 
    return 0;
 }
 
-static void
-assign_var_locations(struct hash_table *ht, unsigned *size)
+void
+nir_assign_var_locations_scalar(struct exec_list *var_list, unsigned *size)
 {
    unsigned location = 0;
 
-   struct hash_entry *entry;
-   hash_table_foreach(ht, entry) {
-      nir_variable *var = (nir_variable *) entry->data;
-
+   foreach_list_typed(nir_variable, var, node, var_list) {
       /*
        * UBO's have their own address spaces, so don't count them towards the
        * number of global uniforms
        */
-      if (var->data.mode == nir_var_uniform && var->interface_type != NULL)
+      if ((var->data.mode == nir_var_uniform || var->data.mode == nir_var_shader_storage) &&
+          var->interface_type != NULL)
          continue;
 
       var->data.driver_location = location;
@@ -98,14 +97,6 @@ assign_var_locations(struct hash_table *ht, unsigned *size)
    *size = location;
 }
 
-static void
-assign_var_locations_shader(nir_shader *shader)
-{
-   assign_var_locations(shader->inputs, &shader->num_inputs);
-   assign_var_locations(shader->outputs, &shader->num_outputs);
-   assign_var_locations(shader->uniforms, &shader->num_uniforms);
-}
-
 static bool
 deref_has_indirect(nir_deref_var *deref)
 {
@@ -120,6 +111,79 @@ deref_has_indirect(nir_deref_var *deref)
    return false;
 }
 
+static bool
+mark_indirect_uses_block(nir_block *block, void *void_state)
+{
+   struct set *indirect_set = void_state;
+
+   nir_foreach_instr(block, instr) {
+      if (instr->type != nir_instr_type_intrinsic)
+         continue;
+
+      nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
+
+      for (unsigned i = 0;
+           i < nir_intrinsic_infos[intrin->intrinsic].num_variables; i++) {
+         if (deref_has_indirect(intrin->variables[i]))
+            _mesa_set_add(indirect_set, intrin->variables[i]->var);
+      }
+   }
+
+   return true;
+}
+
+/* Identical to nir_assign_var_locations_packed except that it assigns
+ * locations to the variables that are used 100% directly first and then
+ * assigns locations to variables that are used indirectly.
+ */
+void
+nir_assign_var_locations_scalar_direct_first(nir_shader *shader,
+                                             struct exec_list *var_list,
+                                             unsigned *direct_size,
+                                             unsigned *size)
+{
+   struct set *indirect_set = _mesa_set_create(NULL, _mesa_hash_pointer,
+                                               _mesa_key_pointer_equal);
+
+   nir_foreach_overload(shader, overload) {
+      if (overload->impl)
+         nir_foreach_block(overload->impl, mark_indirect_uses_block,
+                           indirect_set);
+   }
+
+   unsigned location = 0;
+
+   foreach_list_typed(nir_variable, var, node, var_list) {
+      if ((var->data.mode == nir_var_uniform || var->data.mode == nir_var_shader_storage) &&
+          var->interface_type != NULL)
+         continue;
+
+      if (_mesa_set_search(indirect_set, var))
+         continue;
+
+      var->data.driver_location = location;
+      location += type_size(var->type);
+   }
+
+   *direct_size = location;
+
+   foreach_list_typed(nir_variable, var, node, var_list) {
+      if ((var->data.mode == nir_var_uniform || var->data.mode == nir_var_shader_storage) &&
+          var->interface_type != NULL)
+         continue;
+
+      if (!_mesa_set_search(indirect_set, var))
+         continue;
+
+      var->data.driver_location = location;
+      location += type_size(var->type);
+   }
+
+   *size = location;
+
+   _mesa_set_destroy(indirect_set, NULL);
+}
+
 static unsigned
 get_io_offset(nir_deref_var *deref, nir_instr *instr, nir_src *indirect,
               struct lower_io_state *state)
@@ -148,11 +212,10 @@ get_io_offset(nir_deref_var *deref, nir_instr *instr, nir_src *indirect,
                                                       nir_op_imul);
             mul->src[0].src.is_ssa = true;
             mul->src[0].src.ssa = &load_const->def;
-            mul->src[1].src = nir_src_copy(deref_array->indirect,
-                                           state->mem_ctx);
+            nir_src_copy(&mul->src[1].src, &deref_array->indirect,
+                         state->mem_ctx);
             mul->dest.write_mask = 1;
-            mul->dest.dest.is_ssa = true;
-            nir_ssa_def_init(&mul->instr, &mul->dest.dest.ssa, 1, NULL);
+            nir_ssa_dest_init(&mul->instr, &mul->dest.dest, 1, NULL);
             nir_instr_insert_before(instr, &mul->instr);
 
             if (found_indirect) {
@@ -162,8 +225,7 @@ get_io_offset(nir_deref_var *deref, nir_instr *instr, nir_src *indirect,
                add->src[1].src.is_ssa = true;
                add->src[1].src.ssa = &mul->dest.dest.ssa;
                add->dest.write_mask = 1;
-               add->dest.dest.is_ssa = true;
-               nir_ssa_def_init(&add->instr, &add->dest.dest.ssa, 1, NULL);
+               nir_ssa_dest_init(&add->instr, &add->dest.dest, 1, NULL);
                nir_instr_insert_before(instr, &add->instr);
 
                indirect->is_ssa = true;
@@ -229,25 +291,18 @@ nir_lower_io_block(nir_block *block, void *void_state)
          offset += intrin->variables[0]->var->data.driver_location;
 
          load->const_index[0] = offset;
-         load->const_index[1] = 1;
 
          if (has_indirect)
             load->src[0] = indirect;
 
          if (intrin->dest.is_ssa) {
-            load->dest.is_ssa = true;
-            nir_ssa_def_init(&load->instr, &load->dest.ssa,
-                             intrin->num_components, NULL);
-
-            nir_src new_src = {
-               .is_ssa = true,
-               .ssa = &load->dest.ssa,
-            };
-
-            nir_ssa_def_rewrite_uses(&intrin->dest.ssa, new_src,
+            nir_ssa_dest_init(&load->instr, &load->dest,
+                              intrin->num_components, NULL);
+            nir_ssa_def_rewrite_uses(&intrin->dest.ssa,
+                                     nir_src_for_ssa(&load->dest.ssa),
                                      state->mem_ctx);
          } else {
-            load->dest = nir_dest_copy(intrin->dest, state->mem_ctx);
+            nir_dest_copy(&load->dest, &intrin->dest, state->mem_ctx);
          }
 
          nir_instr_insert_before(&intrin->instr, &load->instr);
@@ -278,9 +333,8 @@ nir_lower_io_block(nir_block *block, void *void_state)
          offset += intrin->variables[0]->var->data.driver_location;
 
          store->const_index[0] = offset;
-         store->const_index[1] = 1;
 
-         store->src[0] = nir_src_copy(intrin->src[0], state->mem_ctx);
+         nir_src_copy(&store->src[0], &intrin->src[0], state->mem_ctx);
 
          if (has_indirect)
             store->src[1] = indirect;
@@ -314,8 +368,6 @@ nir_lower_io_impl(nir_function_impl *impl)
 void
 nir_lower_io(nir_shader *shader)
 {
-   assign_var_locations_shader(shader);
-
    nir_foreach_overload(shader, overload) {
       if (overload->impl)
          nir_lower_io_impl(overload->impl);