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technical to Azen and Jim VC

Posted: Thu May 26, 2016 10:40 pm
by Norman_Stansfield
Is this possible to render out a vertex color channel on a mesh?
It would make a better fluids solutions, where faster moving fluid gets brighter. It can be done in vray, but not in octane, because there is no vertex color material.

If this is hard problem, I can live with that. But otherwise it would be the last needed feature to be perfect. I will spread a word about you guys in movie industry, since I am finishing feature film with heavy usage of octane and krakatoa (stoke, frost). Soon, you will see volumetrics in action. Great for your reel.

More than this I dont have any needs to be done. Only stability, but octane never crashed here on my hardware while I use it since 2014.

Happy 3.0 customer,
bye

Re: technical to Azen and Jim VC

Posted: Fri May 27, 2016 12:04 am
by JimStar
Good point.
Current versions of Octane core have no vertex color support, so the current versions of a plugin don't have it too...
I could implement it as some workaround in the plugin, generating the implicit image texture for every mesh every time the scene is translated. But this approach will drift Octane towards more and more CPU usage for rendering, while the main goal of Octane is moving as much rendering calculations as possible to GPU... So, from this point of view it would be better to have this feature on the Octane rendering core level, not on the level of translating the scene by the plugin doing some nasty workarounds... Because every frame's rendering process will use a lot of additional CPU calculations to generate all the implicit hi-res vertex-colors textures for every mesh (plus a lot of additional texture memory on GPU).
But thank you for mentioning this, will keep an eye on it for the future versions....