Hello, Could you please tell me how to retrieve the Texture data from asset in c++?

Development Rendering
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1

Hi, Guys,
I know one asset may have multiple textures, I want to retrieve all textures information of the asset and verify their data. I think I need to use the UTexture, but I do not know how to get them from the asset, Could you please teach me about that?

Thanks
Bests
YLi

2

what kind of data, pixel data? or you want to get UTexture (which is asset btw)?

3

Hi, I just wanna retrieve the Texture resolution and whether the texture uses the sRGB channel, some information like that in the C++. Could you please tell me how to get them? I have the texture file in the folder and is used by the asset(blueprint class). So I just wanna get the texture information from these actors or assets in C++.

4

Make UTexture2D* variable in C++ class, and ■■■ EditAnyware or EditDefaultsOnly in to UPROPERTY() like this:

UPROPERTY(EditAnywhere, Category="Some Category")
UTexture2D* MyTexture

Then make blueprint based of that class and in defults you can set the texture which if you se you will be able to access

5

Thank you for your help, but I want to access the texture without using the blueprint and just use the C++ code except iterating all the texture files in the folder, is that possible?

6

Hi ,

If you wish to search a specific folder for all textures inside of it, then you can use the AssetRegistry to do so. Here is a small example:

// Get the asset registry module
FAssetRegistryModule& AssetRegistryModule = FModuleManager::LoadModuleChecked<FAssetRegistryModule>("AssetRegistry");
IAssetRegistry& AssetRegistry = AssetRegistryModule.Get();

// Create the filter
FARFilter AssetRegistryFilter;
AssetRegistryFilter.bRecursiveClasses = true;
AssetRegistryFilter.bRecursivePaths = true;
AssetRegistryFilter.PackagePaths.Add("/Game"); // Change this to the path to the folder
AssetRegistryFilter.ClassNames.Add(UTexture::StaticClass()->GetFName());

// Search the registry
TArray<FAssetData> FilteredAssetData;
if (AssetRegistry.GetAssets(AssetRegistryFilter, FilteredAssetData))
{
	for (const FAssetData &AssetData : FilteredAssetData)
	{
		if (UTexture *Texture = Cast<UTexture>(AssetData.GetAsset()))
		{
			if (Texture->SRGB)
			{
				UE_LOG(LogTemp, Log, TEXT("%s is an sRGB texture!"), *AssetData.ObjectPath.ToString());
			}
		}
	}
}

Note, though, that this will require you to add a dependency (public or private) to AssetRegistry.

7

Hi ,

We haven’t heard from you in a while so I’m going to mark this question as resolved. Based on your comment “I want to access the texture without using the blueprint and just use the C++ code except iterating all the texture files in the folder”, I am going to select this as the answer. If this does not solve your issue or you wish yo re-open the question for another reason, feel free to add a comment.