inline read onlyBYTES_4:Context3DVertexBufferFormat
inline read onlyFLOAT_1:Context3DVertexBufferFormat
inline read onlyFLOAT_2:Context3DVertexBufferFormat
inline read onlyFLOAT_3:Context3DVertexBufferFormat
inline read onlyFLOAT_4:Context3DVertexBufferFormat