Function of AdditionalCanvasShaderChannels and how to disable it

The unity canvus will issue the following warning
Shader channels Normal and Tangent are most often used with lighting, which an Overlay an Overlay canvas does not support. Its likely these channels are not needed

This warning can be removed in this way.

However, when you play unity, this setting will be restored and this warning will appear again.

The issue of settings being restored may be similar to this issue.
However, it has not been fixed

I don’t know what this setup does in the first place.
To me it is just garbage that gives offensive warnings.

Now, what can we do to avoid this unpleasant and meaningless warning?
The version of unity used is 2021.3.4f1

Canvas is a UGUI feature, they’re not a 2D feature. Please use the UGUI forum when asking questions about it.

I’ll move your post for you.

sorry

help

need help

It’s a benign warning. Ignore it. Yes, they should fix it, but it’s not their priority and low-priority bug fixes work their way through builds over months, not days. It’s not causing any issues.

Hmmm, how can I assure you that this phenomenon is not a problem…