So, I’ve been trying to make a Realistic Rock and I tried to apply some Bump Map to it and nothing happened. Usually Bump Map provides a huge difference to a texture but this time nothing happened.
Here is a Picture of my Nodes and my Rock with the supposed “Bump Map”:
What did I do wrong?
Can’t spot anything obvious to me. Did you try adjusting the gradient from the noise?
I just tried it now and it still didn’t do anything. Do i need a Black and White image for this?
Okay I was dumb. I thought the limit on the Bump Strength was only 1.0… I gave it a 3.0 and now you can see the bump map.
In order to see what exactly is coming out of the colorramp, plug the colorramp output into an emission shader and do a viewport render. The noise texture is an odd ball giving out a very light and full color texture (the others are grayscale with a wider range of levels) So take a look at just what the emission gives you. My gut feeling is that you need to have a wider grayscale range on the colorramp. Another quick test, replace the noise with musgrave.
Something like this. once you are happy with scale, etc, plug it back into the bump just like you have it.
edit: i meant to plug those into the color, not the strength, but it seems to work anyway.
Yeah, but the Musgrave in some settings can produce a gamut waaaaaay larger than displayable 0-1 emission, and showing the “weird colorings of the normal output” as emission instead can give you a much broader idea of what the Musgrave actually delivers. Musgrave is the king of bumpmaps, and can produce much better and varied results with a single generator. Noise is good for uniform noise, unless you start mixing in many generators at the cost of rendering speed (especially at high detail levels). Musgrave for colors require clipping, scaling (multiply and add), or a combination.
Haven’t found any good tutorials on (Cycles) Musgrave though.
Remember that the effect of the bump map depends on the scale of the object as well as the “strength”
