Hi people, for a few days a discussion about using the
Octane GPU render engine had started at Daz3D forums, so I want to post here some of the conclussions about this.
In fact Octane is a GPU render, so dont expect to render faster if you dont have a very good NVidia graphic board. With this new engine you can render very faster in NVidia GFX260 and you will end with image quality like Maxwell or Fryrender, but without the large money investment!
So the idea is a low cost and high quality render engine that can be used with Carrara. Lets see how it will talk with Carrara in the future, since Daz plans a bridge between Carrara and Daz Studio, that already had a Renderman file saver: thats is the best way to integrate scenes into Octane, but not the only one.
Here go some considerations from
Zeller Samuel at Daz3D thread:
Not sure what the difference is between an unbiased renderer and a raytracer...
Unbiased is also based on light bouncing on surfaces, but its using another kind of algorithms. Unbiased has a bounce setting, but if you setup 8 bounces for examples, the 8 bounces gonna be unbiased... that mean there's not gonna be interpolations or cheats in all the 8 bounce... all the 8 bounce for example gonna cast caustics... that's why its so long to render with CPU
The closest thing to Unbiased is QMC (in Modo for example)
But QMC is very slow (not slower than Maxwell on CPU, but more slow than raytracing or global illumination that use approximations)
Also GPU are fast because they got a lot more cores than CPU
A 4 core CPU gonna splice the image in buckets, the total number of buckets is a multiple of 4... 8... 16... 32... and so on
But the problem is that the CPU can only render 4 buckets at a time !!
GPU with 240 cores for example, splice the entire image in 240 buckets
And every bucket render at the same time... the result is an image that you can fully see even at 1s rendering, that's why its called "interactive"
Next generation GPU gonna have 512 cores, that's more than two time the actual number of core, that mean next GPU generation gonna be at least 2 time faster than current generation for Octane render I am looking forward to this render engine in the future... need the bucks t get it, and its a very low cost compared to maxwell render
That's true, also Octane gonna have all the Maxwell features (Subsurface, displacement, thin coat, complex IOR, layered materials etc.. even glare, obstacle maps and physical sun)
You gonna be able to make the exact same picture than maxwell but hell faster Very Happy And you gonna be able to do animation trough 100% compliant RIB pipeline (and maybe FBX+Collada but a little later) Can you talk a little more here for Carrara users about the best low cost graphics card and at same time the benefits? What we need to have in mind when choosing a GPU?
To choose GPU for CUDA
You need to check the serie for CUDA compatibility (don't take older than 8800 GT)
You need to check the number of "cores" the more the better
You need to check the ammount of RAM the more the better, its not doing anything to speed, its used to stock the scene data, so if you work with big scenes try to take minimum 1.7gb (2gb) or more
GTX260 is a good choice (240 core)
Its useless to buy lower speed GPU if you want to use Octane
Because older GPU are already outdated for CUDA
But don't trash older GPU, since you can used multi-GPU with Octane
You can keep your slow GPU to display windows and the fast GPU only for rendering.
With that setup the Octane UI gonna be silk smooth and you gonna be able to work when Octane render, for example doing modeling while Octane is rendering.
But don't forget next Nvidia GPU gonna be twice fast than GTX260 Oh, and please make a Carrara plugin for you renderer
Refractive software are not going to make plugins, UNTIL Octane is finished
Also they gonna write documentation about how-to make plugins for Octane
The only thing you can do for now is, register on forum, tell a lot of Carrara users to do it, then create a topic and all ask for Carrara plugin
But I think the best way is to ask Carrara developers to write a plugins, for that they gonna need to wait for official documentation from Octane You can see more about Octane in its web site:
http://www.refractivesoftware.com/You can follow the discussion at Daz3D:
http://forum.daz3d.com/viewtopic.php?t=130655Attached are some images created by the Carrara user Joelegecko
