4.26: Error: illegal indirection; Solution: Remove deference
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Removing * from *whiteNoiseCS solved the issue for me.
4.26 has a signature for FComputeShaderUtils::Dispatch that doesn't require a deference:
static void Dispatch(FRHIComputeCommandList& RHICmdList, const TShaderRef<TShaderClass>& ComputeShader,
Disclaimer: I'm using a custom 4.26 build. Haven't checked the official build.
Bunch of things changed from 4.24 (The version I used for this project) and 4.26, including the signature for that method. They usually comment the changes so you can fix issues when migrating to a newer version of the engine, but sometimes you'll be on your own and have to find the changes by yourself in the engine code.
In 4.24, this is the signature;
static void Dispatch(FRHICommandList& RHICmdList, const TShaderClass* ComputeShader,
Forgot to say thanks for the tutorials. You've cleared a path through the jungle of Unreal with your machete, helping people pursue the golden situation: direct access to their own data, while still benefiting from Unreal's features.
You are most welcome! I'm really glad that you found them helpful.