X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fprogramdata.h;h=3cef2d4c1b5cd921fa75c7f8d6dc449300151909;hb=8f7d5b6460ef68e7316c7f556b7152d9c9f7bfe2;hp=51ecc579a2582fcfedbcc72e86cb04961e909194;hpb=97015ec7bddd26aa746f5227e4109b7d32438cca;p=libs%2Fgl.git

diff --git a/source/programdata.h b/source/programdata.h
index 51ecc579..3cef2d4c 100644
--- a/source/programdata.h
+++ b/source/programdata.h
@@ -1,35 +1,37 @@
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
 #ifndef MSP_GL_PROGRAMDATA_H_
 #define MSP_GL_PROGRAMDATA_H_
 
 #include <map>
 #include <msp/datafile/objectloader.h>
+#include "program.h"
 
 namespace Msp {
 namespace GL {
 
-class Program;
+class Buffer;
+class Color;
+class Matrix;
 class Uniform;
+class UniformBlock;
+class Vector3;
+class Vector4;
 
 /**
-Stores uniform variables for a shader program.
+Stores uniform variables for shader programs.  The uniforms are stored in a
+program-independent way, and UniformBlocks are created to match the uniform
+layouts of different programs.  If multiple programs have the same layout, the
+same block is used for them.
+
+The class is optimized for an access pattern where the set of uniforms and
+programs stays constants, with only the values changing.
 */
 class ProgramData
 {
 public:
 	class Loader: public DataFile::ObjectLoader<ProgramData>
 	{
-	private:
-		Program &prog;
-
 	public:
-		Loader(ProgramData &, Program &);
+		Loader(ProgramData &);
 	private:
 		void uniform1i(const std::string &, int);
 		void uniform1f(const std::string &, float);
@@ -39,7 +41,31 @@ public:
 	};
 
 private:
-	std::map<int, Uniform *> data;
+	enum Changes
+	{
+		NO_CHANGES,
+		VALUES_CHANGED,
+		KEYS_CHANGED
+	};
+
+	struct Block
+	{
+		Changes changes;
+		UniformBlock *block;
+		std::map<unsigned, const Uniform *const *> uniforms;
+
+		Block();
+	};
+
+	typedef std::map<std::string, Uniform *> UniformMap;
+	typedef std::map<unsigned, Block> BlockMap;
+
+	// XXX All these mutables are a bit silly, but I'm out of better ideas
+	UniformMap uniforms;
+	mutable BlockMap blocks;
+	mutable UniformBlock *last_block;
+	mutable Buffer *buffer;
+	mutable Changes changes;
 
 	ProgramData &operator=(const ProgramData &);
 public:
@@ -47,16 +73,42 @@ public:
 	ProgramData(const ProgramData &);
 	~ProgramData();
 
-	void uniform(int, Uniform *);
-	void uniform(int, int);
-	void uniform(int, float);
-	void uniform(int, float, float);
-	void uniform2(int, const float *);
-	void uniform(int, float, float, float);
-	void uniform3(int, const float *);
-	void uniform(int, float, float, float, float);
-	void uniform4(int, const float *);
-	void uniform_matrix4(int, const float *);
+private:
+	void uniform(const std::string &, Uniform *);
+public:
+	void uniform(const std::string &, int);
+	void uniform(const std::string &, float);
+	void uniform(const std::string &, float, float);
+	void uniform2(const std::string &, const float *);
+	void uniform(const std::string &, float, float, float);
+	void uniform(const std::string &, const Vector3 &);
+	void uniform3(const std::string &, const float *);
+	void uniform(const std::string &, float, float, float, float);
+	void uniform(const std::string &, const Vector4 &);
+	void uniform(const std::string &, const Color &);
+	void uniform4(const std::string &, const float *);
+	void uniform_matrix2(const std::string &, const float *);
+	void uniform_matrix3(const std::string &, const float *);
+	void uniform_matrix4(const std::string &, const float *);
+	void uniform_matrix4(const std::string &, const Matrix &);
+	void uniform1_array(const std::string &, unsigned, const float *);
+	void uniform2_array(const std::string &, unsigned, const float *);
+	void uniform3_array(const std::string &, unsigned, const float *);
+	void uniform4_array(const std::string &, unsigned, const float *);
+	void uniform_matrix4_array(const std::string &, unsigned, const float *);
+
+private:
+	void find_uniforms_for_block(Block &, const Program::UniformBlockInfo &) const;
+	UniformBlock *create_block(const Program::UniformBlockInfo &) const;
+	const UniformBlock *get_block(const Program &, const Program::UniformBlockInfo *) const;
+
+public:
+	/** Returns a UniformBlock matching the program's layout.  If name is empty,
+	uniforms for the default uniform block (outside any uniform block
+	declarations) are returned. */
+	const UniformBlock *get_block(const Program &prog, const std::string &name) const;
+
+	/// Creates blocks for the currently bound program and applies them.
 	void apply() const;
 };