Trying to create a decay effect but nothing happens when I connect the bump node to the principled bsdf. Why?
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5$\begingroup$ Connect the texture to the Height input of the Bump Node - not the Strength. $\endgroup$– Christopher BennettCommented May 20, 2022 at 18:33
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$\begingroup$ Thank you for your reply, that is the correct answer. I cant however mark it as "correct answer" since you posted it as a comment $\endgroup$– atkaizerCommented May 21, 2022 at 13:07
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$\begingroup$ There - I made it into an answer. $\endgroup$– Christopher BennettCommented May 21, 2022 at 13:15
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1 Answer
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Connect the texture to the Height input of the Bump Node - not the Strength.:
However, given the way Bump nodes work (by default), the difference between black and white is 1M - looks strange when trying to emulate on the surface of something at full strength (especially when bump maps are generally used to convey minor surface ripples/imperfections). The easiest remedy I've found is to mix the Noise Texture output with some greyscale value (I used white in the example, but that may change depending on your use case) quite heavily (my mix is at .998). You can see the difference especially in shiny metallic things (pictured below):
answered May 21, 2022 at 13:14