Black screen after Capture on some devices

[memcpy1337]

I have several phones, on one works fine, but on an older tablet huawei mediapad t3 instead of blur screen displays solid black. I am using URP in my project. I also use shaders created in Shader Graph, they work without any problems on the problematic tablet. What could be the problem?
Can you help please?

And thank you so much for your asset

[mob-sakai]

Thank you for your reporting!

Tell me about your develop/build environment.

• UIEffectSnapshot version [e.g. 1.0.0]
• Platform: [e.g. Editor(Windows/Mac), Standalone(Windows/Mac), iOS, Android, WebGL]
• Unity version: [e.g. 2022.2.0f1]
• Build options: [e.g. IL2CPP, .Net 4.x, URP/HDRP]

Could you please attach a minimal project (included Assets, Packages and ProjectSettings directories) that reproduces the issue?

[memcpy1337]

UIEffectSnapshot version : 1.0.1
Platform: Android
Unity version: 2019.4.31f1
Build options: NET Standart 2.0, URP, Mono

Here (tested right now - black screen):
Project.zip

[mob-sakai]

This issue is not reproduced on my Android (Xperia ZX: Snapdragon 820).

So, I will create a test project with ScreenCapture.CaptureScreenshotIntoRenderTexture API for you. 👍
https://docs.unity3d.com/ScriptReference/ScreenCapture.CaptureScreenshotIntoRenderTexture.html

[mob-sakai]

Project_fixtest.zip

@memcpy1337
Please test this project on your Android.

[memcpy1337]

@mob-sakai
Unfortunately, the problem is also observed in your project

[memcpy1337]

The problem is in the script UIEffectSnapshotUpdater function SetupCommandBuffer
Lines:

// [3] Iterate blurring operation.
            if (request.blurMode != UIEffectSnapshotRequest.BlurMode.None)
            {
                for (var i = 0; i < request.blurIterations; i++)
                {
                    // [3.1] Apply blurring (horizontal).
                    cb.SetGlobalVector(s_EffectFactorId, new Vector4(request.blurFactor, 0));
                    Blit(cb, ref src, ref dst, mat, 1);
            
                    // [3.2] Apply blurring (vertical).
                    cb.SetGlobalVector(s_EffectFactorId, new Vector4(0, request.blurFactor));
                    Blit(cb, ref src, ref dst, mat, 1);
                }
            }

If i comment this lines all works fine (except blurring :)). I debugging this on problematic tablet (huawei mediapad t3), and did not see any visible (to me) errors