+ bool needs_lowering(ir_dereference_array *deref) const
+ {
+ if (deref == NULL || deref->array_index->as_constant()
+ || !is_array_or_matrix(deref->array))
+ return false;
+
+ if (deref->array->ir_type == ir_type_constant)
+ return this->lower_temps;
+
+ const ir_variable *const var = deref->array->variable_referenced();
+ switch (var->mode) {
+ case ir_var_auto:
+ case ir_var_temporary:
+ return this->lower_temps;
+ case ir_var_uniform:
+ return this->lower_uniforms;
+ case ir_var_in:
+ case ir_var_const_in:
+ return (var->location == -1) ? this->lower_temps : this->lower_inputs;
+ case ir_var_out:
+ return (var->location == -1) ? this->lower_temps : this->lower_outputs;
+ case ir_var_inout:
+ return this->lower_temps;
+ }
+
+ assert(!"Should not get here.");
+ return false;
+ }
+