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I'd like to create a realistic burger and I don't get how to create a shader for my french fries:

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I tried adding procedural textures and displacements, subsurface scattering but unfortunately the shading doesn't look like realistic fries and too flat. Since I'm running out of ideas: What can I do to improve the shader to achieve a plausible and more realistic result?

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Attached a blend with some fries and proper UV's:

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    $\begingroup$ Please take your time when asking a question. You should know by now, that your question shows no effort, no research and also has some spelling issues. You could at least share a file with the fries using blend-exchange. Please read: blender.stackexchange.com/help/how-to-ask thanks. $\endgroup$
    – brockmann
    Mar 5, 2021 at 8:20

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The method I'd prefer for realism is microdisplacement. Set your Cycles feature set to experimental so that you can use the Adaptive feature of the Subdivision Surface modifier.

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And then set up your material for displacement and bump so that when you connect something to the displacement socket it modifies the mesh.

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I used the same Noise Texture for both the Base Color and Displacement, so that I could make the areas with the most displacement a more golden brown. The Scale values have to be adjusted for the scale you're working at.

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I found that a Midlevel of 0 did some work to kind of puff up the model as though it had actually been deep fried, which was kind of fun.

Subsurface Radius value was 1, 1, 1 for this shot.

If that doesn't suit, or if a bunch of highly subdivided shapes are going to be too heavy for the final scene, I think it looks ok with Bump Only, you'd just have to do some work with the model to avoid it looking flat. It looks like you have some pretty good shape variations to work with so maybe that's a place to start.

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  • $\begingroup$ Something very strange is happening. I have used adaptive subdivision before but any object with another modifier along with the subdivision surface modifier in my scene does not have the adabtive option in the subsurface modifier. I tried both in 2.92 and 2.93 alpha. Why can't I have adaptive subdivision along with other modifiers? $\endgroup$ Mar 5, 2021 at 6:39
  • $\begingroup$ What I did was I made an archive for the fries and then applied the modifiers other than the subdiv. Now I'll try the microdisplacements. $\endgroup$ Mar 5, 2021 at 6:47
  • $\begingroup$ Thanks! It looks much better now $\endgroup$ Mar 5, 2021 at 7:51
  • $\begingroup$ If you drag the subdiv down to the bottom of the modifier stack you can use adaptive $\endgroup$ Mar 5, 2021 at 8:27

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