X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Fgenerate.h;h=f76c2c2d8fba55d7231f95dfd487d20e897b3061;hb=1d02efce746aa8b6e678a3bf56bfbbbe0aea6952;hp=511a460793d4e162fb05c24119c37c8538114322;hpb=99719790df8a1215465a68c7b1d87a495bff87eb;p=libs%2Fgl.git

diff --git a/source/glsl/generate.h b/source/glsl/generate.h
index 511a4607..f76c2c2d 100644
--- a/source/glsl/generate.h
+++ b/source/glsl/generate.h
@@ -11,6 +11,7 @@ namespace Msp {
 namespace GL {
 namespace SL {
 
+/** Combines multiple declarations of the same identifier into one. */
 class DeclarationCombiner: private TraversingVisitor
 {
 private:
@@ -23,31 +24,49 @@ public:
 
 private:
 	virtual void visit(Block &);
-	virtual void visit(FunctionDeclaration &);
 	virtual void visit(VariableDeclaration &);
-	using TraversingVisitor::visit;
+	virtual void visit(FunctionDeclaration &) { }
 };
 
-class BlockResolver: private TraversingVisitor
+/** 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:
+	const std::map<std::string, int> *values;
+
 public:
-	void apply(Stage &s) { visit(s.content); }
+	ConstantSpecializer();
+
+	void apply(Stage &, const std::map<std::string, int> *);
 
 private:
-	virtual void visit(Block &);
-	virtual void visit(InterfaceBlock &);
-	using TraversingVisitor::visit;
+	virtual void visit(VariableDeclaration &);
+};
+
+/** Forms links between nested blocks in the syntax tree. */
+class BlockHierarchyResolver: private TraversingVisitor
+{
+public:
+	void apply(Stage &s) { s.content.visit(*this); }
+
+private:
+	virtual void enter(Block &);
 };
 
+/** Resolves variable references.  Variable references which match the name
+of an interface block are turned into interface block references. */
 class VariableResolver: private TraversingVisitor
 {
 private:
-	Block *builtins;
-	StructDeclaration *type;
+	Stage *stage;
+	std::map<std::string, VariableDeclaration *> *r_members;
+	RefPtr<InterfaceBlockReference> r_iface_ref;
 	std::string block_interface;
 	bool record_target;
-	VariableDeclaration *assignment_target;
-	bool self_referencing;
+	VariableDeclaration *r_assignment_target;
+	bool r_self_referencing;
 
 public:
 	VariableResolver();
@@ -55,41 +74,52 @@ public:
 	void apply(Stage &);
 
 private:
-	Block *next_block(Block &);
-
-	virtual void visit(Block &);
+	virtual void enter(Block &);
 	virtual void visit(VariableReference &);
+	virtual void visit(InterfaceBlockReference &);
 	virtual void visit(MemberAccess &);
+	virtual void visit(UnaryExpression &);
 	virtual void visit(BinaryExpression &);
 	virtual void visit(Assignment &);
+	virtual void visit(FunctionCall &);
 	virtual void visit(StructDeclaration &);
 	virtual void visit(VariableDeclaration &);
 	virtual void visit(InterfaceBlock &);
-	virtual void visit(FunctionDeclaration &);
-	virtual void visit(Iteration &);
-	using TraversingVisitor::visit;
 };
 
+/** Resolves function declarations and calls. */
 class FunctionResolver: private TraversingVisitor
 {
 private:
-	std::map<std::string, std::vector<FunctionDeclaration *> > functions;
+	Stage *stage;
+	std::map<std::string, std::vector<FunctionDeclaration *> > declarations;
 
 public:
-	void apply(Stage &s) { visit(s.content); }
+	void apply(Stage &);
 
 private:
 	virtual void visit(FunctionCall &);
 	virtual void visit(FunctionDeclaration &);
-	using TraversingVisitor::visit;
 };
 
+/** 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;
+	bool function_scope;
+	InterfaceBlock *iface_block;
+	bool copy_block;
+	Block *iface_target_block;
 	NodeList<Statement>::iterator iface_insert_point;
 	NodeList<Statement>::iterator assignment_insert_point;
 	std::set<Node *> nodes_to_remove;
@@ -104,43 +134,13 @@ private:
 	std::string change_prefix(const std::string &, const std::string &) const;
 	virtual void visit(Block &);
 	bool generate_interface(VariableDeclaration &, const std::string &, const std::string &);
+	bool generate_interface(InterfaceBlock &);
 	ExpressionStatement &insert_assignment(const std::string &, Expression *);
 	virtual void visit(VariableReference &);
 	virtual void visit(VariableDeclaration &);
-	virtual void visit(Passthrough &);
-	using TraversingVisitor::visit;
-};
-
-class DeclarationReorderer: private TraversingVisitor
-{
-private:
-	enum DeclarationKind
-	{
-		NO_DECLARATION,
-		LAYOUT,
-		STRUCT,
-		VARIABLE,
-		FUNCTION
-	};
-
-	DeclarationKind kind;
-	std::set<Node *> ordered_funcs;
-	std::set<Node *> needed_funcs;
-
-public:
-	DeclarationReorderer();
-
-	void apply(Stage &s) { visit(s.content); }
-
-private:
-	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 &);
-	using TraversingVisitor::visit;
+	virtual void visit(Passthrough &);
 };
 
 } // namespace SL