1 #ifndef MSP_GL_UNIFORM_H_
2 #define MSP_GL_UNIFORM_H_
5 #include "reflectdata.h"
15 Uniform(const Uniform &);
16 Uniform &operator=(const Uniform &);
18 virtual ~Uniform() { }
20 virtual void store(const ReflectData::UniformInfo &, void *) const = 0;
21 virtual Uniform *clone() const = 0;
26 class UniformScalar: public Uniform
36 UniformScalar(Type v): value(v) { }
38 void set(Type v) { value = v; }
40 Type get() const { return value; }
42 virtual void store(const ReflectData::UniformInfo &info, void *buffer) const
43 { store(info, buffer, &value); }
45 static void store(const ReflectData::UniformInfo &, void *buffer, const T *value)
46 { *reinterpret_cast<T *>(buffer) = *value; }
48 virtual UniformScalar *clone() const
49 { return new UniformScalar(value); }
52 typedef UniformScalar<int> Uniform1i;
53 typedef UniformScalar<float> Uniform1f;
56 template<typename T, unsigned vecsize>
57 class UniformVector: public Uniform
61 typedef T Type[vecsize];
67 UniformVector(const T *vp) { set(vp); }
70 { std::copy(vp, vp+vecsize, value); }
72 BaseType get(unsigned i) const { return value[i]; }
74 virtual void store(const ReflectData::UniformInfo &info, void *buffer) const
75 { store(info, buffer, value); }
77 static void store(const ReflectData::UniformInfo &, void *buffer, const T *value)
78 { std::copy(value, value+vecsize, reinterpret_cast<T *>(buffer)); }
80 virtual UniformVector *clone() const
81 { return new UniformVector(value); }
84 typedef UniformVector<int, 2> Uniform2i;
85 typedef UniformVector<float, 2> Uniform2f;
86 typedef UniformVector<int, 3> Uniform3i;
87 typedef UniformVector<float, 3> Uniform3f;
88 typedef UniformVector<int, 4> Uniform4i;
89 typedef UniformVector<float, 4> Uniform4f;
92 template<typename T, unsigned rows, unsigned cols>
93 class UniformMatrix: public Uniform
97 typedef T Type[rows*cols];
103 UniformMatrix(const T *vp) { set(vp); }
105 void set(const T *vp)
106 { std::copy(vp, vp+rows*cols, value); }
108 virtual void store(const ReflectData::UniformInfo &info, void *buffer) const
109 { store(info, buffer, value); }
111 static void store(const ReflectData::UniformInfo &info, void *buffer, const T *value)
113 for(unsigned i=0; i<cols; ++i)
114 UniformVector<T, rows>::store(info, reinterpret_cast<char *>(buffer)+i*info.matrix_stride, value+i*rows);
117 virtual UniformMatrix *clone() const
118 { return new UniformMatrix(value); }
121 // The naming of these types follows the OpenGL convention of columns x rows
122 typedef UniformMatrix<float, 2, 2> UniformMatrix2x2f;
123 typedef UniformMatrix<float, 2, 3> UniformMatrix3x2f;
124 typedef UniformMatrix<float, 2, 4> UniformMatrix4x2f;
125 typedef UniformMatrix<float, 3, 2> UniformMatrix2x3f;
126 typedef UniformMatrix<float, 3, 3> UniformMatrix3x3f;
127 typedef UniformMatrix<float, 3, 4> UniformMatrix4x3f;
128 typedef UniformMatrix<float, 4, 2> UniformMatrix2x4f;
129 typedef UniformMatrix<float, 4, 3> UniformMatrix3x4f;
130 typedef UniformMatrix<float, 4, 4> UniformMatrix4x4f;
134 class UniformArray: public Uniform
137 typedef typename T::BaseType BaseType;
138 enum { elemsize = sizeof(typename T::Type)/sizeof(typename T::BaseType) };
144 UniformArray(unsigned n, const BaseType *vp):
146 values(new BaseType[elemsize*size_])
156 unsigned size() const { return size_; }
158 void set(const BaseType *vp)
159 { std::copy(vp, vp+elemsize*size_, values); }
161 virtual void store(const ReflectData::UniformInfo &info, void *buffer) const
163 for(unsigned i=0; i<size_; ++i)
164 T::store(info, reinterpret_cast<char *>(buffer)+i*info.array_stride, values+i*elemsize);
167 virtual UniformArray *clone() const
168 { return new UniformArray(size_, values); }