a few questions about opencl

General questions about Indigo, the scene format, rendering etc...
Post Reply
8 posts • Page 1 of 1
mousea
Posts: 2
Joined: Sun Mar 18, 2018 4:26 am

a few questions about opencl

Post by mousea » Sun Mar 18, 2018 4:28 am

Hello everyone,
I'm a newbie and I just came into contact with this renderer.

I have a few questions I would like to ask. If I enable opencl in the render settings, the renderer will choose to use opencl instead of cuda for calculations - because the manual does not describe this option, I do not quite understand its effect.
Is opencl a faster calculation in indigo render?

In addition, I would like to know if indigo will add NVIDIA's ai denoise feature.

Thank you very much.

User avatar
OnoSendai
Developer
Posts: 6182
Joined: Sat May 20, 2006 6:16 pm
Location: Newcastle upon Tyne, UK
Contact:

Re: a few questions about opencl

Post by OnoSendai » Tue Mar 20, 2018 12:45 pm

OpenCL is used for GPU rendering. Cuda isn't used in Indigo 4 because it is unnecessary - OpenCL provides a cross platform API to access the GPU.

If you have a decent GPU, OpenCL rendering should be a lot faster (in samples-per-second at least), than normal CPU rendering (without OpenCL).

We don't have immediate plans to use an AI denoiser, but it's something we will look at if there's enough demand.

mousea
Posts: 2
Joined: Sun Mar 18, 2018 4:26 am

Re: a few questions about opencl

Post by mousea » Tue Mar 27, 2018 3:04 am

Thank you very much for your reply.

User avatar
Phoenix
Indigo 100
Posts: 157
Joined: Tue Jul 04, 2006 2:15 am
Contact:

Re: a few questions about opencl

Post by Phoenix » Tue Oct 09, 2018 10:29 am

OnoSendai wrote:
Tue Mar 20, 2018 12:45 pm
We don't have immediate plans to use an AI denoiser, but it's something we will look at if there's enough demand.
Oh, you should definitely take a look at it and absolutely consider implementing the NVIDIA OptiX Denoiser in Indigo.

In my eyes this technologie is really a huge benefit for every PBR and practically a game changer.

And here a few examples from other render engines that still implemented it:
Thearender: Optix denoiser test
Thea for SketchUp V2 Render In Just 1 Minutes
Denoise final renders using OptiX Denoiser
New finalRender AI-Denoiser incorporating NVIDIA OptiX 5.0
Arnold 5.1 Denoiser from Nvidia optix
Corona Render 3 Nvidia AI Optix Denoiser Test Render 19/08/2018
Redshift 2.5 Feature Preview: NVIDIA AI Denoising

fourzeronine
Posts: 90
Joined: Fri Nov 15, 2013 5:16 pm
Location: Los Angeles, CA
Contact:

Re: a few questions about opencl

Post by fourzeronine » Tue Oct 09, 2018 9:25 pm

I'm sure a similar feature can be implemented that uses OpenCL.

burnin
Posts: 121
Joined: Tue May 04, 2010 2:53 pm

Re: a few questions about opencl

Post by burnin » Tue Oct 09, 2018 11:27 pm

Yes, it can be done via OCL.

IMO, denoising is worthless and expensive hack considering spent resources VS return value. Especially, when a feature is locked to specific platform. Also, an argument "beneficial for previews" doesn't hold any substance - previews are previews & PT renders can simply stay noisy (let your brain learn) or use any of the many standalone solutions out there to fix it fast and satisfy the client (if willing to pay for extra unusable work/time, denoised differences are minimal).

Worth of being aware:

User avatar
pixie
Indigo 100
Posts: 2222
Joined: Sat Dec 29, 2007 4:54 am
Location: Away from paradise
Contact:

Re: a few questions about opencl

Post by pixie » Mon Apr 29, 2019 3:32 am

Well, truth be told @burnin, it surely looks sweet at luxrender. Compromises can be made and still have somehow a good looking image.

burnin
Posts: 121
Joined: Tue May 04, 2010 2:53 pm

Re: a few questions about opencl

Post by burnin » Wed May 01, 2019 9:29 am

My previous statement was just about NVidia's tech which i still don't like that much.

But OIDN & BCD are computed using CPU (HW agnostic) and both are simply Great (1st for previews, 2nd for final 5%) :) Yup, even in RT viewport. I learned, grown... evolved in different way.
Collective resources well spent & now I enjoy it.
Can you forgive me? :D

Post Reply
8 posts • Page 1 of 1

Who is online

Users browsing this forum: No registered users and 4 guests