How to render Cinema 4D Pyro in Arnold Renderer! (Quickstart) 

Thanks Jordan, more Arnold videos to come :) I agree, I think Arnold get's looked over a lot because it's not pure GPU render engine like Octane or Redshift.

Arnold is one of my favorite renderer's.

@@the-astropathHaven't used a lot of them but it is my favorite thus far. Do you find it a bit slow compared to other GPU renderers though?

@@lightning4201 Yes, it's generally slower than redshift or octane, but it has it's benefits.

You're welcome :)

try caching it and import the vdb files in the pyro object and see if you see the fire in ipr

You need to apply to it (to the pyro object) an Arnold volume Cháfer. Then, enter that shader and check the channels it's accessing. You'll see that for the color/temperature field the channel is "heat". There's no heat channel in Pyro. So just remove that and write "temperature" so the shader will access the pyros's temperature channel. It's just a naming convention mismatch, it happens a lot when using .vdb from different sources that use different names for their channels. Hope this fixes your "bug".

It's hard for me to diagnose without more information.

Make sure you're pyro object settings are the same as mine.

u didnt do any changes in your settings on 1:10, but still can render pyro even without volume material. i did the same and theres no fire fire in my ipr, i can see only smoke if my quad light has 10 intensity and exposure

@@misterdoctor9688 same here. I only have smoke no fire. When I started doing the exact same things in the video my smoke was white-grey when his was immediately the colour of fire. I don't understand as I did everything EXACTLY the same as him.

i have the same problem… it appears only smoke…

More on the way!

Did you select the vdb sequence?

@@the-astropath yes

@@the-astropath yes I did that

@@the-astropath at the beginning in the viewport everything works, but as soon as I go to cache it as you did in your video for rendering, nothing is displayed when trying to rendering the frame

@@thewayne9747 It's hard for me to help without seeing the project file. You can always read the Arnold documentation for all the details. That's what I used to learn.

In the volume shader, under "emission", you'll see something called "channel" where it is written "heat". Simply rename this "heat" to "temperature" and the problem should be fixed.

Я тоже так и не понял, только цпу, или он какую-то галочку включил, но нам не показал.

You have to select the .vdb sequence you cached. That way it imports the whole sequence.

@@the-astropath i go in file name and select the first vdb exported in the cache section, and it doesn't work. That's sooo weird, i searched everywhere on the inernet and followed step by step each tutotial but nothing.

@@the-astropath that's the error message: [volume] IoError: could not get size of file C:\Users\Shadow\Desktop\Nouveau dossier\Scène de simulation_0000.vdb

@@theterifique9727 well what's the file size of the vdb it should be decently large. If it's only a couple KB something happened when you cached probably.

@@the-astropath well the biggest one is 250 000ko. I don't think that's the problem. I updated everything too.

I used the CPU for this render. Arnold GPU doesn't have all of the same features as the CPU.

@@the-astropath thanks 🤝

Because I love Arnold too :) more Redshift videos are coming too. There are a few ways to address the noise in Arnold. Increasing Camera AA samples is the easiest but I'm going to go over more details in the next video I put out.

@@the-astropath I also find I get noise more in my animations; I am using the GPU render though so if you have tips that are not going to drastically increase render time, that would be great. Thanks for al you do!

​@@lightning4201у меня вообще на gpu pyro не запускает рендер. Только на cpu