inline read onlyBGRA:Context3DTextureFormat
inline read onlyBGRA_PACKED:Context3DTextureFormat
inline read onlyBGR_PACKED:Context3DTextureFormat
inline read onlyCOMPRESSED:Context3DTextureFormat
inline read onlyCOMPRESSED_ALPHA:Context3DTextureFormat
inline read onlyRGBA_HALF_FLOAT:Context3DTextureFormat