X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fprogramdata.h;h=196abcb1ebe30cf151b855aa27257658fd3c02e1;hb=d147aa8f56e6a60d80f628ffeedf16bc99b588d3;hp=cf642e6141222d3033d80bc6d92e50ff6c99e863;hpb=3cdcc7f689b3868dd275774b9bd9adb5c436f244;p=libs%2Fgl.git

diff --git a/source/programdata.h b/source/programdata.h
index cf642e61..196abcb1 100644
--- a/source/programdata.h
+++ b/source/programdata.h
@@ -3,21 +3,26 @@
 
 #include <map>
 #include <msp/datafile/objectloader.h>
+#include "matrix.h"
 #include "program.h"
+#include "vector.h"
 
 namespace Msp {
 namespace GL {
 
 class Buffer;
-class Color;
-class Matrix;
 class Uniform;
 class UniformBlock;
-class Vector3;
-class Vector4;
+struct Color;
 
 /**
-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
 {
@@ -35,36 +40,60 @@ public:
 	};
 
 private:
-	enum Changes
+	typedef unsigned Mask;
+
+	enum
+	{
+		MASK_BITS = sizeof(Mask)*8,
+		ALL_ONES = static_cast<Mask>(-1)
+	};
+
+	struct SharedBlock
 	{
-		NO_CHANGES,
-		VALUES_CHANGED,
-		KEYS_CHANGED
+		Mask used;
+		Mask dirty;
+		UniformBlock *block;
+
+		SharedBlock();
+		SharedBlock(unsigned, UniformBlock *);
 	};
 
-	struct Block
+	struct ProgramBlock
 	{
-		Changes changes;
+		int bind_point;
 		UniformBlock *block;
-		std::map<unsigned, const Uniform *const *> uniforms;
+		SharedBlock *shared;
 
-		Block();
+		ProgramBlock();
+		ProgramBlock(int, SharedBlock *);
 	};
 
-	typedef std::map<std::string, Uniform *> UniformMap;
-	typedef std::map<unsigned, Block> BlockMap;
+	struct ProgramUniforms
+	{
+		std::vector<ProgramBlock> blocks;
+		Mask used;
+		Mask dirty;
+
+		ProgramUniforms();
+	};
+
+	typedef std::map<std::string, unsigned> SlotMap;
+	typedef std::map<Program::LayoutHash, SharedBlock> BlockMap;
+	typedef std::map<Program::LayoutHash, ProgramUniforms> ProgramMap;
 
 	// XXX All these mutables are a bit silly, but I'm out of better ideas
-	UniformMap uniforms;
+	SlotMap uniform_slots;
+	std::vector<Uniform *> uniforms;
 	mutable BlockMap blocks;
+	mutable ProgramMap programs;
 	mutable UniformBlock *last_block;
 	mutable Buffer *buffer;
-	mutable Changes changes;
+	mutable unsigned dirty;
 
-	ProgramData &operator=(const ProgramData &);
 public:
 	ProgramData();
 	ProgramData(const ProgramData &);
+	ProgramData &operator=(const ProgramData &);
 	~ProgramData();
 
 private:
@@ -81,8 +110,12 @@ public:
 	void uniform(const std::string &, const Vector4 &);
 	void uniform(const std::string &, const Color &);
 	void uniform4(const std::string &, const float *);
+	void uniform(const std::string &, const LinAl::Matrix<float, 2, 2> &);
+	void uniform_matrix2(const std::string &, const float *);
+	void uniform(const std::string &, const LinAl::Matrix<float, 3, 3> &);
+	void uniform_matrix3(const std::string &, const float *);
+	void uniform(const std::string &, const Matrix &);
 	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 *);
@@ -90,12 +123,13 @@ public:
 	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:
-	const UniformBlock *get_block(const Program &, const std::string &) const;
+	unsigned compute_slot_mask(const Program::UniformBlockInfo &) const;
+	void update_block(UniformBlock &, const Program::UniformBlockInfo &) const;
+	SharedBlock *get_shared_block(const Program::UniformBlockInfo &) const;
 
+public:
+	/** Applies uniform blocks for the currently bound program, creating them
+	if needed. */
 	void apply() const;
 };