X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Fgenerate.h;h=b82bdca365bc02e7fd856c86f5011eb124517f92;hb=30465dd3b9f55ec42c4b19c3c2077eede7237a26;hp=aae570c4d7ad709e8f77cafc252c31b4cb2440cf;hpb=696a97bd7411d69953c1a9e4b5f3dfb4c1d848f1;p=libs%2Fgl.git

diff --git a/source/glsl/generate.h b/source/glsl/generate.h
index aae570c4..b82bdca3 100644
--- a/source/glsl/generate.h
+++ b/source/glsl/generate.h
@@ -11,28 +11,59 @@ namespace Msp {
 namespace GL {
 namespace SL {
 
-class DeclarationCombiner: public BlockModifier
+/** Combines multiple declarations of the same identifier into one. */
+class DeclarationCombiner: private TraversingVisitor
 {
 private:
-	bool toplevel;
 	std::map<std::string, std::vector<FunctionDeclaration *> > functions;
 	std::map<std::string, VariableDeclaration *> variables;
+	std::set<Node *> nodes_to_remove;
 
 public:
-	DeclarationCombiner();
+	void apply(Stage &);
 
-	using StageVisitor::visit;
+private:
 	virtual void visit(Block &);
 	virtual void visit(FunctionDeclaration &);
 	virtual void visit(VariableDeclaration &);
 };
 
-class VariableResolver: public StageVisitor
+/** 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:
+	ConstantSpecializer();
+
+	void apply(Stage &, const std::map<std::string, int> *);
+
+private:
+	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:
-	std::vector<Block *> blocks;
-	StructDeclaration *type;
-	bool anonymous;
+	Stage *stage;
+	Block *builtins;
+	std::map<std::string, VariableDeclaration *> *members;
+	RefPtr<InterfaceBlockReference> iface_ref;
 	std::string block_interface;
 	bool record_target;
 	VariableDeclaration *assignment_target;
@@ -41,10 +72,14 @@ private:
 public:
 	VariableResolver();
 
-	virtual void apply(Stage &);
-	using StageVisitor::visit;
-	virtual void visit(Block &);
+	void apply(Stage &);
+
+private:
+	Block *next_block(Block &);
+
+	virtual void enter(Block &);
 	virtual void visit(VariableReference &);
+	virtual void visit(InterfaceBlockReference &);
 	virtual void visit(MemberAccess &);
 	virtual void visit(BinaryExpression &);
 	virtual void visit(Assignment &);
@@ -53,41 +88,65 @@ public:
 	virtual void visit(InterfaceBlock &);
 };
 
-class FunctionResolver: public StageVisitor
+/** Resolves function declarations and calls. */
+class FunctionResolver: private TraversingVisitor
 {
 private:
+	Stage *stage;
 	std::map<std::string, std::vector<FunctionDeclaration *> > functions;
 
 public:
-	using StageVisitor::visit;
+	void 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;
+	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;
 
 public:
 	InterfaceGenerator();
 
-	static std::string get_out_prefix(StageType);
-	virtual void apply(Stage &);
-	using StageVisitor::visit;
-	virtual void visit(Block &);
+	void apply(Stage &);
+
+private:
+	static std::string get_out_prefix(Stage::Type);
 	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(InterfaceBlock &);
+	virtual void visit(FunctionDeclaration &);
 	virtual void visit(Passthrough &);
 };
 
-class DeclarationReorderer: public StageVisitor
+/** Reorders declarations to ensure that declarations always appear before
+references. */
+class DeclarationReorderer: private TraversingVisitor
 {
 private:
 	enum DeclarationKind
@@ -99,7 +158,6 @@ private:
 		FUNCTION
 	};
 
-	unsigned scope_level;
 	DeclarationKind kind;
 	std::set<Node *> ordered_funcs;
 	std::set<Node *> needed_funcs;
@@ -107,7 +165,9 @@ private:
 public:
 	DeclarationReorderer();
 
-	using StageVisitor::visit;
+	void apply(Stage &s) { s.content.visit(*this); }
+
+private:
 	virtual void visit(Block &);
 	virtual void visit(FunctionCall &);
 	virtual void visit(InterfaceLayout &) { kind = LAYOUT; }