1 #ifndef MSP_GL_PROGRAMDATA_H_
2 #define MSP_GL_PROGRAMDATA_H_
5 #include <msp/datafile/objectloader.h>
20 Stores uniform variables for shader programs. The uniforms are stored in a
21 program-independent way, and UniformBlocks are created to match the uniform
22 layouts of different programs. If multiple programs have the same layout, the
23 same block is used for them.
25 The class is optimized for an access pattern where the set of uniforms and
26 programs stays constants, with only the values changing.
31 class Loader: public DataFile::ObjectLoader<ProgramData>
34 Loader(ProgramData &);
36 void uniform1i(const std::string &, int);
37 void uniform1f(const std::string &, float);
38 void uniform2f(const std::string &, float, float);
39 void uniform3f(const std::string &, float, float, float);
40 void uniform4f(const std::string &, float, float, float, float);
41 void uniform_array_(const std::string &, DataType, unsigned);
42 void uniform1i_array(const std::string &);
43 void uniform1f_array(const std::string &);
44 void uniform2f_array(const std::string &);
45 void uniform3f_array(const std::string &);
46 void uniform4f_array(const std::string &);
47 void uniform_array(const std::string &);
51 class ArrayLoader: public DataFile::Loader
55 unsigned element_size;
56 std::vector<char> data;
59 ArrayLoader(DataType, unsigned);
61 DataType get_data_type() const { return type; }
62 unsigned get_element_size() const { return element_size; }
63 const void *get_data() const { return &data[0]; }
64 unsigned get_size() const { return data.size()/(4*element_size); }
67 void uniform(DataType, unsigned, const void *);
69 void uniform1f(float);
70 void uniform2f(float, float);
71 void uniform3f(float, float, float);
72 void uniform4f(float, float, float, float);
75 typedef unsigned Mask;
79 MASK_BITS = sizeof(Mask)*8,
80 ALL_ONES = static_cast<Mask>(-1)
90 SharedBlock(unsigned, UniformBlock *);
100 ProgramBlock(int, SharedBlock *);
103 struct ProgramUniforms
105 std::vector<ProgramBlock> blocks;
112 typedef std::map<std::string, unsigned> SlotMap;
113 typedef std::map<Program::LayoutHash, SharedBlock> BlockMap;
114 typedef std::map<Program::LayoutHash, ProgramUniforms> ProgramMap;
116 // XXX All these mutables are a bit silly, but I'm out of better ideas
117 SlotMap uniform_slots;
118 std::vector<Uniform *> uniforms;
119 mutable BlockMap blocks;
120 mutable ProgramMap programs;
121 mutable UniformBlock *last_block;
122 mutable Buffer *buffer;
123 mutable unsigned dirty;
127 ProgramData(const ProgramData &);
128 ProgramData &operator=(const ProgramData &);
132 void uniform(const std::string &, Uniform *);
134 void uniform(const std::string &, int);
135 void uniform(const std::string &, float);
136 void uniform(const std::string &, float, float);
137 void uniform2(const std::string &, const float *);
138 void uniform(const std::string &, float, float, float);
139 void uniform(const std::string &, const Vector3 &);
140 void uniform3(const std::string &, const float *);
141 void uniform(const std::string &, float, float, float, float);
142 void uniform(const std::string &, const Vector4 &);
143 void uniform(const std::string &, const Color &);
144 void uniform4(const std::string &, const float *);
145 void uniform(const std::string &, const LinAl::Matrix<float, 2, 2> &);
146 void uniform_matrix2(const std::string &, const float *);
147 void uniform(const std::string &, const LinAl::Matrix<float, 3, 3> &);
148 void uniform_matrix3(const std::string &, const float *);
149 void uniform(const std::string &, const Matrix &);
150 void uniform_matrix4(const std::string &, const float *);
151 void uniform1_array(const std::string &, unsigned, const int *);
152 void uniform1_array(const std::string &, unsigned, const float *);
153 void uniform2_array(const std::string &, unsigned, const float *);
154 void uniform3_array(const std::string &, unsigned, const float *);
155 void uniform4_array(const std::string &, unsigned, const float *);
156 void uniform_matrix4_array(const std::string &, unsigned, const float *);
159 unsigned compute_slot_mask(const Program::UniformBlockInfo &) const;
160 void update_block(UniformBlock &, const Program::UniformBlockInfo &) const;
161 SharedBlock *get_shared_block(const Program::UniformBlockInfo &) const;
164 /** Applies uniform blocks for the currently bound program, creating them