X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Foptimize.h;h=e21dd98fd0fcbe63e578e3012cd072d108c5437d;hb=55a18f710f07c51f05d0dc55741a7f3cc8e70cdd;hp=b7b39176a06e62490573cee96ec174fbcd276ad4;hpb=305b62cf4f7e2a4ca3cc56109003aed6bde61c25;p=libs%2Fgl.git

diff --git a/source/glsl/optimize.h b/source/glsl/optimize.h
index b7b39176..e21dd98f 100644
--- a/source/glsl/optimize.h
+++ b/source/glsl/optimize.h
@@ -227,6 +227,26 @@ 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
 {