LC #48 Gelato ! GPU vs CPU


Gelato Challenge

Alembic download
Cinema 4D download
FBX download
LXO download

Why is it a challenge?
Hello! So why is this a challenge?
Mainly because of the shaders involved in the scene.

  1. Ice cream: liquid, reflective, displaced milk
  2. The “cornetto” SSS
  3. Glass+SSS+Icecream all together
  4. Optional The small paper napkin on the left and Themetallic spoon.

And finally because it is difficult to trick our senses. Thefinal image should represent a tasty good gelato. No dry, no odd, not too fake.

Quite curious to see it also a benchmark for GPU vs CPU Spreadand share !

If posting your own rendered images or video of this scene anywhere out
of this thread, please credit Giorgio Luciano and Eyadorabi. Use any 3d software and techniques you would like.

Changes to the scene are allowed but not required.
Post your work in progress by replying to this thread so you can receive feedback
Feel free to share any extra information or breakdowns to show your techniques or lighting set-up.
Ask questions and give feedback
Enjoy yourself!


the cornetto was made in houdini using the wonderful assets shared by eyadorabi


oh yeah!!! new challenge.
is it challenge no LC#48?


Hey all! Cool challenge! That’s my first iteration. still working on light and materials but all constructive C&C are very welcome.
renderer: octane


Iteration #2, let me know what you think :slight_smile:


@mindatlarge : That’s really awsome work. Love the ice cream shading. Did you use displacement on them?


Here’s my last versiont (I think). @neonbulbs : thanks, yeah it’s just displacement and a mix of glossy and sss material.



I like the subject, and I wanted to give it a try, so here i’am :slight_smile:

I used Redshift and got a 40min rende at 4096*4096px, one HDR, two areaLight, Dof, SSS, displace. I’m still noob with RS, I will test it more if I have the time.
I Realy like your Ice shader mindatlarge, do you know where i can find some good ref to get this result ? I lost most of my time searching images to build the texture…


Hey FeD, I found plenty of refs just by googling ice cream, ice cream texture and homemade ice cream. In my opinion the key in this shader is to get the displacement right, has to have areas with higher frequency and areas that are more flat so you can see the glossiness of the material and get the melted look. I think that redshift is great for this task, keep it up :slight_smile:


New version with some tweaks :


First of all thanks for sharing such a great entry.
A bit of feedback and a few questions
@mindatlarge I relally love your entry. Shaders looks great, the gelato balls have a fantastic displacement (is that displacement map ?) and also the bases looks great( I will make them a bit darker). The metallic scoop looks perfect (reflections + textures) and also the dirt in the glass.
(feedback for version one written before seing the second entry) If I see correctly the principal light is coming from the right (looking at the direction of the shadow from the glass and scoop) It will be interesting to see a bit more contrast and how the caustics in the glass will look boosting a bit the overall lighting.
(feedback version 2) I really like the improved more contrasted version with more contrast and caustics
What are the spec of your system ? How much does it take to render ? If you send me via pm a bigger render I will be very glad to have it print. Great work !

@Fed. The gelato really look better now, I will make the bases just a bit darker. Also I like a lot the ceramic material. It seem you still have to change shaders for the scoop. A bit more contrast in he light would increase “reading” clarity in the image. Overall it is really a great entry.

I’ve tweeted and reposted on my facebook the thread which has really great entries !! Pls do the same. Sorry for my late feedback !


I thought that I would try this challenge out. I am overall not very happy with the way my shaders turned out in terms of glossiness, especially compared to what others have posted here (nice work!), but I am pretty happy with the displacement. Three different versions. The first is directly out of Octane, the second and third are after I did a little compositing in Nuke to get better AO. Suggestions welcome.


@ jakestephens
it si a great entry indeed even if the shader for the ice cream looks a bit odd (mainly the “foam” of the gelato and the color of the wafers) About the lighting it is a good start indeed even if overall looks a bit flat. Can you post your light setup? thanks for sharing. Giorgio


Thanks for the critique! I was overall not happy with the project. I tried to get the depth I wanted using subsurface scattering on a mix material in Octane and I don’t think it was successful. As you noted, it looks a bit weird. My lighting setup it a simple sky and an environment map in Octane, but I did add one area light to warm things up. I’ll pull this one out of the dust bin and try another version, pushing the light and reworking the shaders!