X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Foptimize.h;h=a714a97a1b45ce49cf78a5c0fd4c69d2a4b6a661;hb=188b3b2bf686aada8772475aabf899a0420cbd0f;hp=5091b008634b3d887df606844b326ccc3b353237;hpb=499c0515cde44b304d131ac7ac3b2030c9dbe11c;p=libs%2Fgl.git

diff --git a/source/glsl/optimize.h b/source/glsl/optimize.h
index 5091b008..a714a97a 100644
--- a/source/glsl/optimize.h
+++ b/source/glsl/optimize.h
@@ -9,9 +9,25 @@ namespace Msp {
 namespace GL {
 namespace SL {
 
+/** Assigns values to specialization constants, turning them into normal
+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 &);
+};
+
 /** Finds functions which are candidates for inlining.  Currently this means
-functions which have no parameters, contain no more than one return statement,
-and are only called once. */
+functions which have no flow control statements, no more than one return
+statement, and are either builtins or only called once. */
 class InlineableFunctionLocator: private TraversingVisitor
 {
 private:
@@ -23,7 +39,7 @@ private:
 public:
 	InlineableFunctionLocator();
 
-	const std::set<FunctionDeclaration *> &apply(Stage &s) { s.content.visit(*this); return inlineable; }
+	std::set<FunctionDeclaration *> apply(Stage &s) { s.content.visit(*this); return inlineable; }
 
 private:
 	virtual void visit(FunctionCall &);
@@ -39,12 +55,16 @@ dependencies of the inlined statements to appear before the target function. */
 class InlineContentInjector: private TraversingVisitor
 {
 private:
+	enum Pass
+	{
+		REFERENCED,
+		INLINE,
+		RENAME
+	};
+
 	FunctionDeclaration *source_func;
-	Block *target_block;
-	std::map<std::string, VariableDeclaration *> variable_map;
-	std::string remap_prefix;
-	unsigned remap_names;
-	bool deps_only;
+	Block staging_block;
+	Pass pass;
 	RefPtr<Statement> r_inlined_statement;
 	std::set<Node *> dependencies;
 	std::set<std::string> referenced_names;
@@ -53,7 +73,7 @@ private:
 public:
 	InlineContentInjector();
 
-	const std::string &apply(Stage &, FunctionDeclaration &, Block &, const NodeList<Statement>::iterator &, FunctionDeclaration &);
+	std::string apply(Stage &, FunctionDeclaration &, Block &, const NodeList<Statement>::iterator &, FunctionCall &);
 
 private:
 	virtual void visit(VariableReference &);
@@ -104,7 +124,7 @@ private:
 		bool trivial;
 		bool available;
 
-		ExpressionInfo();
+		ExpressionInfo(): expression(0), assign_scope(0), inline_point(0), trivial(false), available(true) { }
 	};
 
 	std::map<Assignment::Target, ExpressionInfo> expressions;
@@ -155,7 +175,6 @@ public:
 	bool apply(Stage &s) { s.content.visit(*this); return r_any_folded; }
 
 private:
-	static BasicTypeDeclaration::Kind get_value_kind(const Variant &);
 	template<typename T>
 	static T evaluate_logical(char, T, T);
 	template<typename T>
@@ -207,6 +226,26 @@ private:
 	virtual void visit(Iteration &);
 };
 
+class UnreachableCodeRemover: private TraversingVisitor
+{
+private:
+	bool reachable;
+	std::set<Node *> unreachable_nodes;
+
+public:
+	UnreachableCodeRemover();
+
+	virtual bool apply(Stage &);
+
+private:
+	virtual void visit(Block &);
+	virtual void visit(FunctionDeclaration &);
+	virtual void visit(Conditional &);
+	virtual void visit(Iteration &);
+	virtual void visit(Return &) { reachable = false; }
+	virtual void visit(Jump &) { reachable = false; }
+};
+
 /** Removes types which are not used anywhere. */
 class UnusedTypeRemover: private TraversingVisitor
 {
@@ -217,11 +256,7 @@ public:
 	bool apply(Stage &);
 
 private:
-	virtual void visit(Literal &);
-	virtual void visit(UnaryExpression &);
-	virtual void visit(BinaryExpression &);
-	virtual void visit(TernaryExpression &);
-	virtual void visit(FunctionCall &);
+	virtual void visit(RefPtr<Expression> &);
 	virtual void visit(BasicTypeDeclaration &);
 	virtual void visit(ImageTypeDeclaration &);
 	virtual void visit(StructDeclaration &);
@@ -264,6 +299,9 @@ private:
 	Assignment *r_assignment;
 	bool assignment_target;
 	bool r_side_effects;
+	bool in_struct;
+	bool composite_reference;
+	Assignment::Target r_reference;
 	std::set<Node *> unused_nodes;
 
 public:
@@ -275,14 +313,17 @@ private:
 	void referenced(const Assignment::Target &, Node &);
 	virtual void visit(VariableReference &);
 	virtual void visit(InterfaceBlockReference &);
+	void visit_composite(Expression &);
+	virtual void visit(MemberAccess &);
+	virtual void visit(Swizzle &);
 	virtual void visit(UnaryExpression &);
 	virtual void visit(BinaryExpression &);
 	virtual void visit(Assignment &);
+	virtual void visit(TernaryExpression &);
 	virtual void visit(FunctionCall &);
 	void record_assignment(const Assignment::Target &, Node &);
 	virtual void visit(ExpressionStatement &);
-	// Ignore structs because their members can't be accessed directly.
-	virtual void visit(StructDeclaration &) { }
+	virtual void visit(StructDeclaration &);
 	virtual void visit(VariableDeclaration &);
 	virtual void visit(InterfaceBlock &);
 	void merge_variables(const BlockVariableMap &);