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Hello, everyone~ I can't load image files successfully when I use Rama's 'Load Texture 2D from File' node...

The code is as follows:

 UTexture2D* UFileOperator::LoadTexture2D_FromFile(const FString& FullFilePath, EJoyImageFormats ImageFormat, bool& IsValid, int32& Width, int32& Height){
     IsValid = false;
     UTexture2D* LoadedT2D = NULL;
     IImageWrapperModule& ImageWrapperModule = FModuleManager::LoadModuleChecked<IImageWrapperModule>(FName("ImageWrapper"));
     IImageWrapperPtr ImageWrapper = ImageWrapperModule.CreateImageWrapper(GetJoyImageFormat(ImageFormat));
     if (FullFilePath.IsEmpty()) return NULL;
     //Load From File
     TArray<uint8> RawFileData;
     if (!FFileHelper::LoadFileToArray(RawFileData, *FullFilePath)) {
         Width = 21;       //Width is 21 if loading fails
         Height = RawFileData.Num();
         return NULL;
     if (ImageWrapper->SetCompressed(RawFileData.GetData(), RawFileData.Num())) {
         Width = 7;
     else {
         Width = RawFileData.Num();
     //Create T2D!
     if (ImageWrapper.IsValid() && ImageWrapper->SetCompressed(RawFileData.GetData(), RawFileData.Num()))
         const TArray<uint8>* UncompressedBGRA = NULL;
         if (ImageWrapper->GetRaw(ERGBFormat::BGRA, 8, UncompressedBGRA))
             LoadedT2D = UTexture2D::CreateTransient(ImageWrapper->GetWidth(), ImageWrapper->GetHeight(), PF_B8G8R8A8);
             if (!LoadedT2D) {
                 Width = 56;
                 return NULL;
             Width = ImageWrapper->GetWidth();
             Height = ImageWrapper->GetHeight();
             void* TextureData = LoadedT2D->PlatformData->Mips[0].BulkData.Lock(LOCK_READ_WRITE);
             FMemory::Memcpy(TextureData, UncompressedBGRA->GetData(), UncompressedBGRA->Num());
     // Success!
     IsValid = true;
     return LoadedT2D;    

And the blueprint node is

alt text

However, it doesnot load files successfully every time. It loads successfully only a few times... I know the problem is loading problem but not others, because when it fails, the Width is 21 just as what I write in my codes...

I know other developers have already implemented this function, so help please. Thanks:)

Product Version: UE 4.13
blueprint.png (23.4 kB)
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asked Nov 17 '16 at 12:53 PM in Using UE4

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Yunze Gu
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1 answer: sort voted first

your blueprint node shows E:\29db.jpg and you have selected the file format of .png so I assume that must be making your attempt to load a file from E:\29db.jpg.png

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answered Apr 16 '17 at 08:08 PM

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