static const Buffer *current(BufferType);
static void unbind_from(BufferType);
private:
static const Buffer *&binding(BufferType);
static bool set_current(BufferType, const Buffer *);
static const Buffer *current(BufferType);
static void unbind_from(BufferType);
private:
static const Buffer *&binding(BufferType);
static bool set_current(BufferType, const Buffer *);