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So I have some displacement for the top plane of my model. The displacement raised the plane. I figured out the cause. It happened because the edges were somehow split while I was modelling. BUT, when I merge the vertices, the displacement ceases to exist. It looks as if I applied a bump map. I tried modelling again but in vain. I am following a tutorial from youtube.

Here is a link

I'll upload pictures for references

enter image description here

enter image description here

Here is my node setup:

enter image description here

Blend file:

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  • $\begingroup$ Upload blend file for us to look at. $\endgroup$
    – Gunslinger
    Commented May 13, 2020 at 4:51
  • $\begingroup$ how do I upload with textures? $\endgroup$
    – Paritosh
    Commented May 13, 2020 at 5:03
  • $\begingroup$ first in the UV Editor, Image menu > Pack the image. Then upload your blend in blend-exchange.giantcowfilms.com $\endgroup$
    – moonboots
    Commented May 13, 2020 at 5:48
  • $\begingroup$ that option isn't there for me. I can give you the link to the textures tho. $\endgroup$
    – Paritosh
    Commented May 13, 2020 at 7:02
  • $\begingroup$ You can do it via File > External Data > Pack All into blend. Could you try to untick smooth shading (if it's on) in the mesh properties > Normals > Auto smooth $\endgroup$
    – Gorgious
    Commented May 13, 2020 at 7:17

1 Answer 1

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With the Displacement node plugged into the Material Output you're trying to give real displacement to your object. It won't work if you don't give it enough topology, you need to subdivide it.

Also, the Image Texture is supposed to be plugged into the Displacement Height input.

I'm not sure I would use this kind of effect for a hardsurface object though, it works fine for organic object but here it will require a very high-poly mesh, you should try to fake 3D with a Bump node.

Here I've subdivided the mesh to get the Displacement effect:

enter image description here

Here it's a low-poly with 3D faked with a Bump node (plugged into the Normal input of the Diffuse this time):

enter image description here

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  • $\begingroup$ How can a bump node work when I want displacement? $\endgroup$
    – Paritosh
    Commented May 13, 2020 at 10:34
  • $\begingroup$ If I want the same output as the tutorial, what should I do? or is it not possible in blender 2.8? $\endgroup$
    – Paritosh
    Commented May 13, 2020 at 10:36
  • $\begingroup$ Bump fakes displacement right? I want actual displacement, where the geometry is modified. $\endgroup$
    – Paritosh
    Commented May 13, 2020 at 10:39
  • $\begingroup$ I don't think he uses real displacement in this tuto and anyway it was not possible in 2.7, you could do it with the Displace modifier though. If you want real displacement, as I said, you need to increase dramatically your topology (subdivide it) otherwise the mesh doesn't have anything to displace ;) $\endgroup$
    – moonboots
    Commented May 13, 2020 at 10:41
  • $\begingroup$ he connects the colour node directly into the displacement node. Also, if there is a displacement modifier, what's the use of the node? $\endgroup$
    – Paritosh
    Commented May 13, 2020 at 10:42

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