explicitly nail internal texture compression format down to dxt1, otherwise we may end up with DXT3 internal format that is not supported by libmini
explicitly nail internal texture compression format down to dxt1,
otherwise we may end up with DXT3 internal format that is not supported by libmini

nakijun/vtp,nakijun/vtp,nakijun/vtp,nakijun/vtp,nakijun/vtp