X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Freflect.h;h=56ead82ceface5a35fc72af0a2f2b60ae874efc0;hb=ea489c40680f9e8e90eeb163d17c8dddd53981d4;hp=72a50c3eb6368b303ba5bd6e2fad8f7095e0189b;hpb=42903b905cd3924ecc45d3cb08222bc3548cab91;p=libs%2Fgl.git

diff --git a/source/glsl/reflect.h b/source/glsl/reflect.h
index 72a50c3e..56ead82c 100644
--- a/source/glsl/reflect.h
+++ b/source/glsl/reflect.h
@@ -7,6 +7,34 @@ namespace Msp {
 namespace GL {
 namespace SL {
 
+/** Compares two types for equality.  Struct types are compared recursively. */
+class TypeComparer: private NodeVisitor
+{
+private:
+	Node *first;
+	Node *second;
+	unsigned first_tag;
+	bool r_result;
+
+	static unsigned next_tag;
+
+public:
+	TypeComparer();
+
+	bool apply(TypeDeclaration &t1, TypeDeclaration &t2) { compare(t1, t2); return r_result; }
+
+private:
+	void compare(Node &, Node &);
+	template<typename T>
+	T *multi_visit(T &);
+	virtual void visit(Literal &);
+	virtual void visit(VariableReference &);
+	virtual void visit(BasicTypeDeclaration &);
+	virtual void visit(ImageTypeDeclaration &);
+	virtual void visit(StructDeclaration &);
+	virtual void visit(VariableDeclaration &);
+};
+
 /** Determines the number of interface locations required by a variable. */
 class LocationCounter: private NodeVisitor
 {
@@ -25,6 +53,31 @@ private:
 	virtual void visit(VariableDeclaration &);
 };
 
+/** Determines the size and alignment of a variable, in bytes. */
+class MemoryRequirementsCalculator: private NodeVisitor
+{
+public:
+	struct Result
+	{
+		unsigned size;
+		unsigned alignment;
+
+		Result(unsigned s, unsigned a): size(s), alignment(a) { }
+	};
+private:
+	unsigned r_size;
+	unsigned r_alignment;
+	int r_offset;
+
+public:
+	Result apply(VariableDeclaration &v) { v.visit(*this); return Result(r_size, r_alignment); }
+
+private:
+	virtual void visit(BasicTypeDeclaration &);
+	virtual void visit(StructDeclaration &);
+	virtual void visit(VariableDeclaration &);
+};
+
 /** Collects dependencies of a function.  This includes global variables,
 interface blocks, other functions and types. */
 class DependencyCollector: private TraversingVisitor