namespace GL {
namespace SL {
-class DefaultPrecisionGenerator: public BlockModifier
+/** Generates default precision declarations if they are missing, to satisfy
+GLSL ES requirements. */
+class DefaultPrecisionGenerator: private TraversingVisitor
{
private:
- Stage::Type stage_type;
- bool toplevel;
+ Stage *stage;
std::set<std::string> have_default;
+ NodeList<Statement>::iterator insert_point;
public:
DefaultPrecisionGenerator();
void apply(Stage &);
- using BlockModifier::visit;
+private:
virtual void visit(Block &);
virtual void visit(Precision &);
virtual void visit(VariableDeclaration &);
};
-class PrecisionRemover: public BlockModifier
+/** Removes precision qualifiers from variable declarations, as well as
+default precision declarations. */
+class PrecisionRemover: private TraversingVisitor
{
+private:
+ std::set<Node *> nodes_to_remove;
+
public:
- void apply(Stage &s) { visit(s.content); }
+ void apply(Stage &);
- using BlockModifier::visit;
+private:
virtual void visit(Precision &);
virtual void visit(VariableDeclaration &);
};
-class LegacyConverter: public BlockModifier
+/** Converts structures of the syntax tree to match a particular set of
+features. */
+class LegacyConverter: private TraversingVisitor
{
private:
Stage *stage;
- GLApi target_api;
- Version target_version;
- std::string type;
+ Features features;
+ std::string r_type;
VariableDeclaration *frag_out;
+ NodeList<Statement>::iterator uniform_insert_point;
+ std::set<Node *> nodes_to_remove;
public:
LegacyConverter();
- LegacyConverter(const Version &);
+
+ virtual void apply(Stage &, const Features &);
private:
+ void unsupported(const std::string &);
+
+ virtual void visit(Block &);
bool check_version(const Version &) const;
- bool check_extension(const Extension &) const;
-public:
- using BlockModifier::visit;
- virtual void apply(Stage &);
-private:
+ bool check_extension(bool Features::*) const;
+ bool supports_stage(Stage::Type) const;
bool supports_unified_interface_syntax() const;
virtual void visit(VariableReference &);
virtual void visit(Assignment &);