Add support for uint types in GLSL

[libs/gl.git] / source / glsl / reflect.cpp

diff --git a/source/glsl/reflect.cpp b/source/glsl/reflect.cpp
index 93d64e5fdb62aac1087d080efb37a0687fd99901..8c10acccd697c265063d481a8f1a8b055ac492bb 100644 (file)
--- a/source/glsl/reflect.cpp
+++ b/source/glsl/reflect.cpp
@@ -6,6 +6,46 @@ namespace Msp {
 namespace GL {
 namespace SL {
 
+bool is_scalar(const BasicTypeDeclaration &type)
+{
+       return (type.kind==BasicTypeDeclaration::INT || type.kind==BasicTypeDeclaration::FLOAT);
+}
+
+bool is_vector_or_matrix(const BasicTypeDeclaration &type)
+{
+       return (type.kind==BasicTypeDeclaration::VECTOR || type.kind==BasicTypeDeclaration::MATRIX);
+}
+
+BasicTypeDeclaration *get_element_type(BasicTypeDeclaration &type)
+{
+       if(is_vector_or_matrix(type) || type.kind==BasicTypeDeclaration::ARRAY)
+       {
+               BasicTypeDeclaration *basic_base = dynamic_cast<BasicTypeDeclaration *>(type.base_type);
+               return (basic_base ? get_element_type(*basic_base) : 0);
+       }
+       else
+               return &type;
+}
+
+bool can_convert(const BasicTypeDeclaration &from, const BasicTypeDeclaration &to)
+{
+       if(from.kind==BasicTypeDeclaration::INT && to.kind==BasicTypeDeclaration::FLOAT)
+               return from.size<=to.size;
+       else if(from.kind!=to.kind)
+               return false;
+       else if(from.kind==BasicTypeDeclaration::INT && from.sign!=to.sign)
+               return from.sign && from.size<=to.size;
+       else if(is_vector_or_matrix(from) && from.size==to.size)
+       {
+               BasicTypeDeclaration *from_base = dynamic_cast<BasicTypeDeclaration *>(from.base_type);
+               BasicTypeDeclaration *to_base = dynamic_cast<BasicTypeDeclaration *>(to.base_type);
+               return (from_base && to_base && can_convert(*from_base, *to_base));
+       }
+       else
+               return false;
+}
+
+
 unsigned TypeComparer::next_tag = 1;
 
 TypeComparer::TypeComparer():
@@ -51,11 +91,41 @@ T *TypeComparer::multi_visit(T &node)
        return 0;
 }
 
+void TypeComparer::visit(Literal &literal)
+{
+       if(Literal *lit1 = multi_visit(literal))
+       {
+               if(!lit1->type || !literal.type)
+                       r_result = false;
+               else
+               {
+                       compare(*lit1->type, *literal.type);
+                       if(r_result)
+                               r_result = (literal.value.check_type<int>() && lit1->value.value<int>()==literal.value.value<int>());
+               }
+       }
+}
+
+void TypeComparer::visit(VariableReference &var)
+{
+       if(VariableReference *var1 = multi_visit(var))
+       {
+               if(!var1->declaration || !var.declaration)
+                       r_result = false;
+               else if(!var1->declaration->constant || !var.declaration->constant)
+                       r_result = false;
+               else if(!var1->declaration->init_expression || !var.declaration->init_expression)
+                       r_result = false;
+               else
+                       compare(*var1->declaration->init_expression, *var.declaration->init_expression);
+       }
+}
+
 void TypeComparer::visit(BasicTypeDeclaration &basic)
 {
        if(BasicTypeDeclaration *basic1 = multi_visit(basic))
        {
-               if(basic1->kind!=basic.kind || basic1->size!=basic.size)
+               if(basic1->kind!=basic.kind || basic1->size!=basic.size || basic1->sign!=basic.sign)
                        r_result = false;
                else if(basic1->base_type && basic.base_type)
                        compare(*basic1->base_type, *basic.base_type);
@@ -106,8 +176,13 @@ void TypeComparer::visit(VariableDeclaration &var)
                        r_result = false;
                else
                {
-                       // TODO Compare array sizes
-                       if(var1->type_declaration!=var.type_declaration)
+                       if(var1->array)
+                       {
+                               r_result = false;
+                               if(var1->array_size && var.array_size)
+                                       compare(*var1->array_size, *var.array_size);
+                       }
+                       if(r_result && var1->type_declaration!=var.type_declaration)
                                compare(*var1->type_declaration, *var.type_declaration);
                        // TODO Compare layout qualifiers for interface block members
                }
@@ -244,7 +319,10 @@ void DependencyCollector::visit(InterfaceBlockReference &iface)
 void DependencyCollector::visit(FunctionCall &call)
 {
        if(call.declaration)
+       {
                dependencies.insert(call.declaration);
+               call.declaration->visit(*this);
+       }
        TraversingVisitor::visit(call);
 }
 
@@ -260,6 +338,15 @@ void DependencyCollector::visit(VariableDeclaration &var)
        TraversingVisitor::visit(var);
 }
 
+void DependencyCollector::visit(FunctionDeclaration &func)
+{
+       if(!visited_functions.count(&func))
+       {
+               visited_functions.insert(&func);
+               TraversingVisitor::visit(func);
+       }
+}
+
 } // namespace SL
 } // namespace GL
 } // namespace Msp