diff options
| -rw-r--r-- | src/glsl/ir_constant_variable.cpp | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/glsl/ir_constant_variable.cpp b/src/glsl/ir_constant_variable.cpp index c5ccd52e5db..749e2cf809f 100644 --- a/src/glsl/ir_constant_variable.cpp +++ b/src/glsl/ir_constant_variable.cpp @@ -42,10 +42,13 @@ struct assignment_entry { int assignment_count; ir_variable *var; ir_constant *constval; + bool our_scope; }; class ir_constant_variable_visitor : public ir_hierarchical_visitor { public: + virtual ir_visitor_status visit_enter(ir_dereference_variable *); + virtual ir_visitor_status visit(ir_variable *); virtual ir_visitor_status visit_enter(ir_assignment *); virtual ir_visitor_status visit_enter(ir_call *); @@ -69,6 +72,22 @@ get_assignment_entry(ir_variable *var, exec_list *list) } ir_visitor_status +ir_constant_variable_visitor::visit(ir_variable *ir) +{ + struct assignment_entry *entry = get_assignment_entry(ir, &this->list); + entry->our_scope = true; + return visit_continue; +} + +/* Skip derefs of variables so that we can detect declarations. */ +ir_visitor_status +ir_constant_variable_visitor::visit_enter(ir_dereference_variable *ir) +{ + (void)ir; + return visit_continue_with_parent; +} + +ir_visitor_status ir_constant_variable_visitor::visit_enter(ir_assignment *ir) { ir_constant *constval; @@ -146,7 +165,7 @@ do_constant_variable(exec_list *instructions) struct assignment_entry *entry; entry = exec_node_data(struct assignment_entry, v.list.head, link); - if (entry->assignment_count == 1 && entry->constval) { + if (entry->assignment_count == 1 && entry->constval && entry->our_scope) { entry->var->constant_value = entry->constval; progress = true; } |