TSoftObjectPtr<> (Texture2D) loads wrong size values.

Development Programming & Scripting C++
, ,
1

I have a weapon class that has a reference to a UI icon in it, and it’s a TSoftObjectPtr<>.

When I need to use this icon, I do Icon.LoadSynchronous() and use it to set a UI image, changing the size of the image to match the Texture size.

The issue is, the first time I load the project and try setting the image, the result is 32x32, although the correct asset is being loaded. All the subsequent times it sets to a correct size, but after relaunching the projects, the first time is always 32x32.

I’ve tried this with TSoftObjectRef<UObject> and TSoftObjectRef<UTexture2D>, the result is the same. If I use a regular pointer, everything works fine.

How do I make the object from the soft pointer load correctly for the first time?

Thank you!

2 Likes
2

I have exactly same problem at unreal 5.1 version

did you find any workaround?

3

It seems this bug only happens at editor build.

at packaged build, It’s ok
but it is still problem.

4

Yes, it seems that it’s editor only problem.

5

I was having the same problem in 5.2.1 but I think I found a fix for it.

In the editor, when calling MyImage->SetBrushFromTexture(newTexture, true); for the first time, the image would always be 32 x 32. If I stopped the game and played it again, the image was the correct size. Image sizes would always be correct in packaged builds.

After tracing through the code, I found that GetSizeX() in Image.cpp was always returning a default checkerboard texture with a size of 32 x 32 in the editor, and that’s where I found this comment:

While compiling the platform data in editor, we will return the placeholders value to ensure rendering works as expected and that there are no thread-unsafe access to the platform data being built. Any process requiring a fully up-to-date platform data is expected to call FTextureCompiler:Get().FinishCompilation on UTexture first.

So, then I tried this line of code before using SetBrushFromTexture and now the size of the image is correct every time:
FTextureCompilingManager::Get().FinishCompilation({newTexture});

The include for the function is:
#include "TextureCompiler.h"

2 Likes
6

FTextureCompilingManager::Get().FinishCompilation({newTexture});

I’d never have guessed that in a million years, thank you! Now my synchronous textures have the right size immediately.

2 Likes
7

One thing I should mention is that this will not compile when you make a build. Be sure to surround it with editor preprocessor directives like this:

#if WITH_EDITOR
	FTextureCompilingManager::Get().FinishCompilation({newTexture});
#endif
1 Like
8

I have exactly same problem. And my project is all blueprint. I wish that there was a solution for this.