1 #ifndef MSP_GL_UNIFORM_H_
2 #define MSP_GL_UNIFORM_H_
15 Uniform(const Uniform &);
16 Uniform &operator=(const Uniform &);
18 virtual ~Uniform() { }
20 virtual void apply(int) const = 0;
21 virtual void store(const Program::UniformInfo &, void *) const = 0;
22 virtual Uniform *clone() const = 0;
27 class UniformScalar: public Uniform
37 UniformScalar(Type v): value(v) { }
39 void set(Type v) { value = v; }
41 Type get() const { return value; }
43 virtual void apply(int index) const
44 { apply(index, 1, &value); }
46 static void apply(int, unsigned, const T *);
48 virtual void store(const Program::UniformInfo &info, void *buffer) const
49 { store(info, buffer, &value); }
51 static void store(const Program::UniformInfo &, void *buffer, const T *value)
52 { *reinterpret_cast<T *>(buffer) = *value; }
54 virtual UniformScalar *clone() const
55 { return new UniformScalar(value); }
58 typedef UniformScalar<int> Uniform1i;
59 typedef UniformScalar<float> Uniform1f;
62 template<typename T, unsigned vecsize>
63 class UniformVector: public Uniform
67 typedef T Type[vecsize];
73 UniformVector(const T *vp) { set(vp); }
76 { std::copy(vp, vp+vecsize, value); }
78 BaseType get(unsigned i) const { return value[i]; }
80 virtual void apply(int index) const
81 { apply(index, 1, value); }
83 static void apply(int index, unsigned size, const T *value);
85 virtual void store(const Program::UniformInfo &info, void *buffer) const
86 { store(info, buffer, value); }
88 static void store(const Program::UniformInfo &, void *buffer, const T *value)
89 { std::copy(value, value+vecsize, reinterpret_cast<T *>(buffer)); }
91 virtual UniformVector *clone() const
92 { return new UniformVector(value); }
95 typedef UniformVector<int, 2> Uniform2i;
96 typedef UniformVector<float, 2> Uniform2f;
97 typedef UniformVector<int, 3> Uniform3i;
98 typedef UniformVector<float, 3> Uniform3f;
99 typedef UniformVector<int, 4> Uniform4i;
100 typedef UniformVector<float, 4> Uniform4f;
103 template<typename T, unsigned rows, unsigned cols>
104 class UniformMatrix: public Uniform
108 typedef T Type[rows*cols];
114 UniformMatrix(const T *vp) { set(vp); }
116 void set(const T *vp)
117 { std::copy(vp, vp+rows*cols, value); }
119 virtual void apply(int index) const
120 { apply(index, 1, value); }
122 static void apply(int index, unsigned size, const T *value);
124 virtual void store(const Program::UniformInfo &info, void *buffer) const
125 { store(info, buffer, value); }
127 static void store(const Program::UniformInfo &info, void *buffer, const T *value)
129 for(unsigned i=0; i<cols; ++i)
130 UniformVector<T, rows>::store(info, reinterpret_cast<char *>(buffer)+i*info.matrix_stride, value+i*rows);
133 virtual UniformMatrix *clone() const
134 { return new UniformMatrix(value); }
137 // The naming of these types follows the OpenGL convention of columns x rows
138 typedef UniformMatrix<float, 2, 2> UniformMatrix2x2f;
139 typedef UniformMatrix<float, 2, 3> UniformMatrix3x2f;
140 typedef UniformMatrix<float, 2, 4> UniformMatrix4x2f;
141 typedef UniformMatrix<float, 3, 2> UniformMatrix2x3f;
142 typedef UniformMatrix<float, 3, 3> UniformMatrix3x3f;
143 typedef UniformMatrix<float, 3, 4> UniformMatrix4x3f;
144 typedef UniformMatrix<float, 4, 2> UniformMatrix2x4f;
145 typedef UniformMatrix<float, 4, 3> UniformMatrix3x4f;
146 typedef UniformMatrix<float, 4, 4> UniformMatrix4x4f;
150 class UniformArray: public Uniform
153 typedef typename T::BaseType BaseType;
154 enum { elemsize = sizeof(typename T::Type)/sizeof(typename T::BaseType) };
160 UniformArray(unsigned n, const BaseType *vp):
162 values(new BaseType[elemsize*size_])
172 unsigned size() const { return size_; }
174 void set(const BaseType *vp)
175 { std::copy(vp, vp+elemsize*size_, values); }
177 virtual void apply(int index) const
178 { T::apply(index, size_, values); }
180 virtual void store(const Program::UniformInfo &info, void *buffer) const
182 for(unsigned i=0; i<size_; ++i)
183 T::store(info, reinterpret_cast<char *>(buffer)+i*info.array_stride, values+i*elemsize);
186 virtual UniformArray *clone() const
187 { return new UniformArray(size_, values); }