CompressImageEx ( const FImage* Images, const uint32 NumImages, const FTextureBuildSettings& Build..., const FIntVector3& InMip0Dimension..., int32 InMip0NumSlicesNoDepth, int32 InMipIndex, int32 InMipCount, FStringView DebugTexturePathName, bool bImageHasAlphaChannel, uint32 ExtData, FCompressedImage2D& OutCompressedI... )