Another important tech art trick. Debugging is useful! RenderDoc, Nsight, Pix, etc. are all very intimidating for how much data they give you and can be confusing. But dig through it and they can be very helpful!
But also discount debugging via logging. It's useful too.😜
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This is using a conversion of 's Smaller Numbers to a custom function expression, using screen space UVs to display a number on the object directly. I abuse this function all of the time to debug shaders and validate my expectations.
shadertoy.com/view/4sBSWW
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Unreal has a built-in material function that does a similar thing that i use constantly, Debug Scalar Value and one for each vector size.
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