Procedural displacement

Question

I wanted to learn Blender as a hobby so I had downloaded it and was following Blender Guru's Donut tutorial. Since I do not have the system requirements for blender 2.8 I am using 2.79. I will get a better PC later but for now I have no other option. So I reached the procedural displacement part and since there is no displacement node in 2.79 (it was added in 2.8 I think.) I am stuck here. I tried bump mapping but since it just gives a fake effect it does not look realistic. Then I tried displace modifier with clouds texture, adjusted some values and it seems to work but since there are no variations it looks weird, So can anyone tell me how to customize it so there are variations in the bumps, like one small, one big and I get almost the same look as Blender Guru's donut

Here is blender guru's node setup (it is done in 2.8 and I am doing tutorial in 2.79 so there is no displacement node)

Answer 1

If you want to use an image for the Displace modifier you can bake the output of the node setup as seen in the video to an image.

Create a plane. Add a new material for it and create the nodes. Plug the output into the Material's output. This will automatically use a (not visible) Emission node.

Then add an Image Texture node and select it. It's the target for the baking process. In the Cycles settings look for the Bake section and bake the Emit bake type.

Save the image with help of the menu! Images are not saved when the blend file is saved!

The result is something like this:

It looks darker because Non-Color was used for the Color Space.

This image you can use for the Displace modifier. Create a new Texture, set the image, set the Color Space. In the modifier's settings use UV mapping.

If you want to scale the noise image you can create a new UV map and scale the UV island up or down.

Example with a torus: