Hi,
I recently read about a novel material approach in the V-Ray renderer called stochastic flakes (https://www.fxguide.com/quicktakes/v-rays-practical-stochastic-rendering-of-spec-y-things/). The technique simulates small shiny flakes that are scattered across a surface. It works great for car paints, snow and similar glossy materials.
Looking at the impressive results the stochastic flakes go beyond some trickery with a specular texture. At the bottom of the V-Ray manual page about it (https://docs.chaosgroup.com/display/VRAY3MAX/Stochastic+Flakes+Material+%7C++VRayStochasticFlakesMtl) there's a link to the paper they used as a reference.
Would be great to see this in Keyshot as well, for even more sparkling product shots than before.
Hello Metin.
Did you ever played with the metallic paint material? https://luxion.atlassian.net/wiki/display/K6M/Metallic+Paint (https://luxion.atlassian.net/wiki/display/K6M/Metallic+Paint)
Just look @ my attached .bip-file. I used this material and added some procedural textures in the different color channels.
(For car paints check the Axalta materials. You'll find more in the KeyShot cloud or https://www.keyshot.com/resources/downloads/materials/ (https://www.keyshot.com/resources/downloads/materials/))
And my question is: What do "stochastic flakes" in V-Ray more and what should be the result look like?
hope that helps
Hi MWo,
Many thanks for your feedback and examples, much appreciated.
Your material looks great. I don't know technical details about V-Ray's stochastic flakes material, but it's a new BRDF type that is friendly on resources such as memory consumption and computing time.
You can read more about it in this article. (https://www.fxguide.com/quicktakes/v-rays-practical-stochastic-rendering-of-spec-y-things/)
Looking at the results there is some complex light scattering going on that exceeds a textured car paint material. Usually, textured car paint materials still have a clearly layered build-up with a sheen across the top. The stochastic flakes material adds an extra finish, with the reflective flakes being an active part of the surface calculation, creating advanced multi-angular blurry reflections and sparkling in the surface.
Best regards,
Metin
That is very interesting. I've tweaked the material from my example and added a light source for glowing and caustics. If the animation is ready in a while, I'll upload the file as well.
Just check this material.
hope that helps a bit.
Wow, that looks great, MWo, thanks a lot for sharing!
Quote from: Metin Seven on October 10, 2016, 12:08:06 AM
Wow, that looks great, MWo, thanks a lot for sharing!
Thank you!
I've attached a zip file with a short animation (1 second) and the frame files.
Cool, thanks again!