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I have been following Blender Guru's doughnut tutorial up to Part 7, and i am unable to identify why my doughnut icing surface doesn`t reflect even the slightest of light. Here's doughnut in my rendered view mode looks like this enter image description here

And this is how Blender guru's looks like thisenter image description here

(Note: i have already applied roughness like what he explains in the video but that doesn't work on it, and Fyi, i am using Blender 2.79 version)

Is there a way to fix this?

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    $\begingroup$ Is there a reason why you're not using the latest Blender version? $\endgroup$
    – Geri
    Commented Mar 4, 2022 at 8:44
  • $\begingroup$ Well,it is because my windows 8.1 only support 32 bit while the requirement needs to be 64 bit ( only blender 2.79 acceptable to my system) $\endgroup$ Commented Mar 4, 2022 at 8:59
  • $\begingroup$ What do you mean with "applied roughness"? Would you mind sharing a screenshot of your material setup? That's more explanatory then just the render result. The render looks like the surface is fully rough and not reflective (of course this also depends on the viewing angles between camera, surface and light source). $\endgroup$ Commented Mar 4, 2022 at 9:33
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    $\begingroup$ hello please pack the images (File > External Data > Pack All Into .blend) and share your file: pasteall.org/blend $\endgroup$
    – moonboots
    Commented Mar 4, 2022 at 9:34
  • $\begingroup$ are u using rendered view? $\endgroup$
    – Chris
    Commented Mar 4, 2022 at 9:36

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It's probably because you are using 2.79 while he's using 2.8 or above in his tutorial. The recent versions of Blender will use the Principled BSDF node by default instead of a simple Diffuse, and the Principled BSDF will create a bit of glossiness on the surface (and also a bit of Fresnel from what I remember). The simplest way to recreate a bit of glossiness it to mix your Diffuse with a Glossy node (open the Shader Editor window and press ShiftA > Shader > ... to create these nodes). As you see with my setup there is not a big difference.

Here is the default material setup since 2.8 (since Principled BSDF):

enter image description here

If I replace it with a mix between Diffuse and Glossy nodes it almost the same as you can see. Note that you need to set a good lighting if you want to come close to what Blender Guru shows:

enter image description here

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  • $\begingroup$ well it worked, even though the glossiness is little bit not bright as i wanted in Blender Guru`s one .. Thanks $\endgroup$ Commented Mar 4, 2022 at 13:33
  • $\begingroup$ I've just tested and my setup for 2.79 is about the same as Guru's result, you just need to move your light a bit $\endgroup$
    – moonboots
    Commented Mar 4, 2022 at 13:36
  • $\begingroup$ yeah i just need to test which direction my lighting suits me the most... Thanks for your help $\endgroup$ Commented Mar 4, 2022 at 13:44

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