X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Fgenerate.h;h=58bc4ca202e6bdbf60f5d625c1f5b5ba2004ef14;hb=3f44e477f81983c66947fe8a6d8640a3b2f9e0b3;hp=90cf272219b9f2ba6bde8b5c4e6c349f5676218a;hpb=1fa69bb8eec3070f5da296d6dd0bd67aea62d3bf;p=libs%2Fgl.git

diff --git a/source/glsl/generate.h b/source/glsl/generate.h
index 90cf2722..58bc4ca2 100644
--- a/source/glsl/generate.h
+++ b/source/glsl/generate.h
@@ -11,119 +11,214 @@ namespace Msp {
 namespace GL {
 namespace SL {
 
-class DeclarationCombiner: public BlockModifier
+/** Manipulates specialization constants.  If values are specified, turns
+specialization constants into normal constants.  Without values assigns
+automatic constant_ids to specialization constants. */
+class ConstantSpecializer: private TraversingVisitor
 {
 private:
-	bool toplevel;
-	std::map<std::string, std::vector<FunctionDeclaration *> > functions;
-	std::map<std::string, VariableDeclaration *> variables;
+	const std::map<std::string, int> *values;
 
 public:
-	DeclarationCombiner();
+	ConstantSpecializer();
 
-	void apply(Stage &s) { visit(s.content); }
+	void apply(Stage &, const std::map<std::string, int> *);
 
-	using BlockModifier::visit;
+private:
+	virtual void visit(VariableDeclaration &);
+};
+
+/** Forms links between nested blocks in the syntax tree. */
+class BlockHierarchyResolver: private TraversingVisitor
+{
+private:
+	bool r_any_resolved;
+
+public:
+	BlockHierarchyResolver(): r_any_resolved(false) { }
+
+	bool apply(Stage &s) { r_any_resolved = false; s.content.visit(*this); return r_any_resolved; }
+
+private:
+	virtual void enter(Block &);
+};
+
+/** Resolves types of variables and base types of other types. */
+class TypeResolver: private TraversingVisitor
+{
+private:
+	Stage *stage;
+	std::map<TypeDeclaration *, TypeDeclaration *> alias_map;
+	std::map<TypeDeclaration *, TypeDeclaration *> array_types;
+	NodeList<Statement>::iterator type_insert_point;
+	InterfaceBlock *iface_block;
+	bool r_any_resolved;
+
+public:
+	TypeResolver();
+
+	bool apply(Stage &);
+
+private:
+	TypeDeclaration *get_or_create_array_type(TypeDeclaration &);
+	void resolve_type(TypeDeclaration *&, const std::string &, bool);
 	virtual void visit(Block &);
-	virtual void visit(FunctionDeclaration &);
+	virtual void visit(BasicTypeDeclaration &);
+	virtual void visit(ImageTypeDeclaration &);
+	virtual void visit(StructDeclaration &);
 	virtual void visit(VariableDeclaration &);
+	virtual void visit(InterfaceBlock &);
+	virtual void visit(FunctionDeclaration &);
 };
 
-class VariableResolver: public TraversingVisitor
+/** Resolves variable references.  Variable references which match the name
+of an interface block are turned into interface block references. */
+class VariableResolver: private TraversingVisitor
 {
 private:
-	std::vector<Block *> blocks;
-	StructDeclaration *type;
-	bool anonymous;
-	std::string block_interface;
+	Stage *stage;
+	RefPtr<Expression> r_replacement_expr;
+	bool r_any_resolved;
 	bool record_target;
-	VariableDeclaration *assignment_target;
-	bool self_referencing;
+	bool r_self_referencing;
+	Assignment::Target r_assignment_target;
+	std::vector<VariableDeclaration *> redeclared_builtins;
+	std::set<Node *> nodes_to_remove;
 
 public:
 	VariableResolver();
 
-	void apply(Stage &);
+	bool apply(Stage &);
 
-	using TraversingVisitor::visit;
-	virtual void visit(Block &);
+private:
+	virtual void enter(Block &);
+	virtual void visit(RefPtr<Expression> &);
+	void check_assignment_target(Statement *);
 	virtual void visit(VariableReference &);
+	virtual void visit(InterfaceBlockReference &);
+	void add_to_chain(Assignment::Target::ChainType, unsigned);
 	virtual void visit(MemberAccess &);
+	virtual void visit(Swizzle &);
 	virtual void visit(BinaryExpression &);
 	virtual void visit(Assignment &);
-	virtual void visit(StructDeclaration &);
+	void merge_layouts(Layout &, const Layout &);
 	virtual void visit(VariableDeclaration &);
 	virtual void visit(InterfaceBlock &);
 };
 
-class FunctionResolver: public TraversingVisitor
+/** Resolves types and lvalueness of expressions. */
+class ExpressionResolver: private TraversingVisitor
 {
 private:
-	std::map<std::string, std::vector<FunctionDeclaration *> > functions;
+	enum Compatibility
+	{
+		NOT_COMPATIBLE,
+		LEFT_CONVERTIBLE,
+		RIGHT_CONVERTIBLE,
+		SAME_TYPE
+	};
+
+	struct ArgumentInfo
+	{
+		BasicTypeDeclaration *type;
+		unsigned component_count;
+	};
+
+	Stage *stage;
+	std::vector<BasicTypeDeclaration *> basic_types;
+	NodeList<Statement>::iterator insert_point;
+	bool r_any_resolved;
 
 public:
-	void apply(Stage &s) { visit(s.content); }
+	ExpressionResolver();
+
+	bool apply(Stage &);
+
+private:
+	static bool is_scalar(BasicTypeDeclaration &);
+	static bool is_vector_or_matrix(BasicTypeDeclaration &);
+	static BasicTypeDeclaration *get_element_type(BasicTypeDeclaration &);
+	static bool can_convert(BasicTypeDeclaration &, BasicTypeDeclaration &);
+	static Compatibility get_compatibility(BasicTypeDeclaration &, BasicTypeDeclaration &);
+	BasicTypeDeclaration *find_type(BasicTypeDeclaration::Kind, unsigned);
+	BasicTypeDeclaration *find_type(BasicTypeDeclaration &, BasicTypeDeclaration::Kind, unsigned);
+	void convert_to(RefPtr<Expression> &, BasicTypeDeclaration &);
+	bool convert_to_element(RefPtr<Expression> &, BasicTypeDeclaration &);
+	bool truncate_vector(RefPtr<Expression> &, unsigned);
+	void resolve(Expression &, TypeDeclaration *, bool);
 
-	using TraversingVisitor::visit;
+	virtual void visit(Block &);
+	virtual void visit(Literal &);
+	virtual void visit(VariableReference &);
+	virtual void visit(InterfaceBlockReference &);
+	virtual void visit(MemberAccess &);
+	virtual void visit(Swizzle &);
+	virtual void visit(UnaryExpression &);
+	void visit(BinaryExpression &, bool);
+	virtual void visit(BinaryExpression &);
+	virtual void visit(Assignment &);
+	virtual void visit(TernaryExpression &);
+	void visit_constructor(FunctionCall &);
+	virtual void visit(FunctionCall &);
+	virtual void visit(BasicTypeDeclaration &);
+	virtual void visit(VariableDeclaration &);
+};
+
+/** Resolves function declarations and calls. */
+class FunctionResolver: private TraversingVisitor
+{
+private:
+	Stage *stage;
+	std::map<std::string, std::vector<FunctionDeclaration *> > declarations;
+	bool r_any_resolved;
+
+public:
+	bool apply(Stage &);
+
+private:
 	virtual void visit(FunctionCall &);
 	virtual void visit(FunctionDeclaration &);
 };
 
-class InterfaceGenerator: public BlockModifier
+/** Materializes implicitly declared interfaces.
+
+Out variable declarations inside functions are moved to the global scope.
+
+Passthrough statements are processed, generating out variables to match in
+variables and copying values.
+
+Unresolved variables are looked up in the previous stage's out variables. */
+class InterfaceGenerator: private TraversingVisitor
 {
 private:
 	Stage *stage;
 	std::string in_prefix;
 	std::string out_prefix;
-	unsigned scope_level;
-	std::map<std::string, RefPtr<VariableDeclaration> > iface_declarations;
+	bool function_scope;
+	bool copy_block;
+	std::vector<VariableDeclaration *> declared_inputs;
+	Block *iface_target_block;
+	NodeList<Statement>::iterator iface_insert_point;
+	NodeList<Statement>::iterator assignment_insert_point;
+	std::set<Node *> nodes_to_remove;
 
 public:
 	InterfaceGenerator();
 
 	void apply(Stage &);
 
+private:
 	static std::string get_out_prefix(Stage::Type);
-	using BlockModifier::visit;
-	virtual void visit(Block &);
 	std::string change_prefix(const std::string &, const std::string &) const;
-	bool generate_interface(VariableDeclaration &, const std::string &, const std::string &);
+	virtual void visit(Block &);
+	VariableDeclaration *generate_interface(VariableDeclaration &, const std::string &, const std::string &);
+	InterfaceBlock *generate_interface(InterfaceBlock &);
 	ExpressionStatement &insert_assignment(const std::string &, Expression *);
 	virtual void visit(VariableReference &);
 	virtual void visit(VariableDeclaration &);
-	virtual void visit(Passthrough &);
-};
-
-class DeclarationReorderer: public TraversingVisitor
-{
-private:
-	enum DeclarationKind
-	{
-		NO_DECLARATION,
-		LAYOUT,
-		STRUCT,
-		VARIABLE,
-		FUNCTION
-	};
-
-	unsigned scope_level;
-	DeclarationKind kind;
-	std::set<Node *> ordered_funcs;
-	std::set<Node *> needed_funcs;
-
-public:
-	DeclarationReorderer();
-
-	void apply(Stage &s) { visit(s.content); }
-
-	using TraversingVisitor::visit;
-	virtual void visit(Block &);
-	virtual void visit(FunctionCall &);
-	virtual void visit(InterfaceLayout &) { kind = LAYOUT; }
-	virtual void visit(StructDeclaration &) { kind = STRUCT; }
-	virtual void visit(VariableDeclaration &);
-	virtual void visit(InterfaceBlock &) { kind = VARIABLE; }
+	virtual void visit(InterfaceBlock &);
 	virtual void visit(FunctionDeclaration &);
+	virtual void visit(Passthrough &);
 };
 
 } // namespace SL