-void array_element(int);
-void draw_arrays(PrimitiveType, int, unsigned);
-void draw_elements(PrimitiveType, unsigned, DataType, const void *);
-void draw_range_elements(PrimitiveType, unsigned, unsigned, unsigned, DataType, const void *);
-
-inline void draw_elements(PrimitiveType mode, unsigned count, const unsigned *indices)
-{ draw_elements(mode, count, UNSIGNED_INT, indices); }
+public:
+ unsigned size() const { return data.size()/stride; }
+ const std::vector<float> &get_data() const { return data; }
+ const float *operator[](unsigned i) const { return &data[0]+i*stride; }