URP throws errors on Android / Vulkan: RenderTexture.Create failed: format unsupported for random wr

Unity Engine
,
1

I get millions of these errors :

07-31 21:59:00.553 4122 4249 E Unity : RenderTexture.Create failed: format unsupported for random writes - RG8 UNorm (6).
07-31 21:59:00.553 4122 4249 E Unity : UnityEngine.Rendering.ScriptableRenderContext:InitializeSortSettings(Camera, SortingSettings&)
07-31 21:59:00.553 4122 4249 E Unity : UnityEngine.Rendering.ScriptableRenderContext:InvokeOnRenderObjectCallback_Internal_Injected(ScriptableRenderContext&)
07-31 21:59:00.553 4122 4249 E Unity : UnityEngine.Rendering.Universal.UniversalRenderPipeline:RenderSingleCamera(ScriptableRenderContext, CameraData, Boolean, Boolean)
07-31 21:59:00.553 4122 4249 E Unity : UnityEngine.Rendering.Universal.UniversalRenderPipeline:RenderCameraStack(ScriptableRenderContext, Camera)
07-31 21:59:00.553 4122 4249 E Unity : UnityEngine.Rendering.Universal.UniversalRenderPipeline:Render(ScriptableRenderContext, Camera[ ])
07-31 21:59:00.553 4122 4249 E Unity : UnityEngine.Rendering.RenderPipeline:InternalRender(ScriptableRenderContext, Camera[ ])
07-31 21:59:00.553 4122 4249 E Unity : UnityEngine.Rendering.RenderPipelineManager:smile:oRenderLoop_Internal(RenderPipelineAsset, IntPtr)
07-31 21:59:00.553 4122 4249 E Unity :
07-31 21:59:00.553 4122 4249 E Unity : [./Runtime/Graphics/RenderTexture.cpp line 444]
07-31 21:59:00.553 4122 4249 E Unity : (Filename: ./Runtime/Graphics/RenderTexture.cpp Line: 444)

and none of these other textures can be created as well
RG16 SFloat (46).
R8 UNorm (5).
RG8 UNorm (6).

I am using the crest ocean renderer and the developers have no idea, why this is not working.
Crest is using compute shaders. But that error comes from SRP. I did not write the code - I bought the asset.
I am ready to ship and now the whole thing is not working!

2

Afaik URP does not use any RenderTexture with enableRandomWrite internally, so this is probably from Crest Ocean Renderer.

The formats listed are typically not supported for random-write in OpenGL ES and Vulkan by mobile GPU drivers.

3

You can try to check format support for random-write using SystemInfo.IsFormatSupported and then fall back to a different format such as R16G16B16A16_SFloat and/or R8G8B8A8_UNorm

4

that´s what I told them (crest) - it´s working when I turn of crest. I will give it a last try as you suggest.

5

the weird thing is, that I cannot find any code that is creating these textures.
where do I find
UnityEngine.Rendering.ScriptableRenderContext:InitializeSortSettings
?
this is the method, where the texture is created. So that looks like unity code, right?

6

I cannot find R16G16B16A16_SFloat or R8G8B8A8_UNorm. Can you give me a complete list for android that supports random writes, PLEASE!

7

so, it seems Rfloat RGFloat instead of *half seems to work. But doesn´t that use more gpu cycles or is this nothing to worry about?

8

solution is to use SystemInfo.GetCompatibleFormat. this spits out a format for the platform.

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