Can texture achieve “flowing” effect with build-in properties? Rewriting shader was not easy for me 
Let me try to do a quick sample…but it will be with nme. no other choice 
Okay, thanks for your help 
And the graph for that:
The idea is simple: make a wave animation with a cosinus and time. Multiply that value with the mask. And add the result to the original picture.
I suggest you to look at carefully at the graph to understand it. To do so, you can plug the output of every node to the fragment output.
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