Keith Treason

I posted the question in the Maxon support page and got a response.  I'm reposting the answer to this question here for anyone else that runs into this issue.


The issue you're running is with Redshift's Global Illumination. To Team Render properly with GI, it must be cached or the computer doing the render will calculate it on its own, which leads to different results depending on the machine's hardware configuration and OS.

• To do that, go to the Advanced tab in your Redshift render settings and under Global Illumination,
• change the Primary Method to Irradiance Cache.
• In the Irradiance Caching section, change the Mode to Rebuild (Prepass Only) and run the render on the main machine only (do not use your Team Render nodes for this). This will render ONLY the GI prepass.
• When that's done, go back and switch the Mode to Load and then do the Team Render; this should force Redshift to load the cached GI prepass for each Team Render node as well, and thus use only the GI calculation from your host machine to render the GI.

Who knew.  I never had GI issues with standard or physical render on stills using the render farm 
 

I wasn't sure if it was a licensing issue but based on this, it looks like you get 5 team render redshift clients to use with your subscription.  That takes that off the list of possible issues.
https://support.maxon.net/hc/en-us/articles/4716238929308?input_string=team+render+issues+with+redshift
 

Could you possibly separate out/split off the 2 sections, reduce the polygons on the section you want, and then stitch it back together with the unaltered portion?

I've been trying to look up why I'm getting this checkerboard render while using Team Render with Redshift but I don't think I'm using the correct terminology because nothing seems to be coming up.  With things like physics and mograph, I know you're supposed to bake everything beforehand to avoid flickering but this is just a still of a motionless object using a couple of lights and emissive/incandescent materials. 

I'm still very new to Redshift so I apologize if this is a dumb question but as the buckets are rendering, things seem way brighter and blown out.  Only when everything's finished does the render instantly darken and change to look like it does in the IPR view.  To me it almost looks like a some of the buckets didn't do this final step.

Our render farm is made up of 3 Mac pros and 4 Mac minis all running the same version of Redshift.

I'm really interested to see how everyone else tackles it without an external renderer.

I toyed with it a little today but it's all faked.  Just a prism using the built in glass node material and a 4 spotlight light setup all using area shadows. The white one is has visible light enabled.  The R+G+B have inverse volumetric enabled and are offset on the y position otherwise they just blend into white.
probably could have rotated the white light to make it look like it was refracting at an angle but oh well.



I thought it was interesting the having a 2nd one inside the first intensified the light

Pink Floyd came up today in conversation and it got me wondering if 3D software can render that rainbow prism effect.  Would that be more of a render setting? Light setting? or does it take more than the standard glass material to pull off. 

On 12/23/2021 at 4:15 AM, HappyPolygon said:

Do you have any medical references or any references that you'd like to replicate ? maybe we could help you more having a direction

I'm going more for the softer look of the photos I originally posted above (organs, fat, and other internal tissues).  Mine was a bit too grotesque but I was just seeing if I could get a fleshy tone. It seems like medical animations in general take quite a bit of creative liberties to avoid that while also trying to stay relatively accurate. 

On 12/21/2021 at 2:58 PM, Cerbera said:

Yes. All these types of surfaces can be made, mostly procedurally using Cinema's excellent noises and layer sets. Even if you only have Physical Render that will still produce decent results, though it will take a while doing it...

 

The key textural elements to make sure you fully understand are Subsurface Scattering, Reflectance, transparency, alpha and Bump / Normal displacement. If you can use those channels effectively, together with colour and luminance of course, that should be all you need. Oh, and of course some lighting experience, because of course half of a look comes from that too, and how it interacts with materials...

 

CBR

 

 

Here is a test I did after watching a handful of tutorial videos. It's all based on noises
Still not quite what I wanted but it's in the direction I was going for.

 

 Yup, their support team is usually pretty quick to respond.
 

These might help

 

Does anyone have any tips and tricks for doing wet subcutaneous tissues like muscles, bone, nerves, fats, etc. ? 

I've been digging around the web and the closest keyword that seems to bring up anything is "gore".   I couldn't really find any seamless texture packs on the major free material libraries.  Is it not something you can procedurally do inside of C4D?  Beyond a basic understanding of subsurface scattering for skin, I'm a little clueless.  All of the tutorials I've found on it are usually utilizing external texturing software like Substance Painter or plugin renderers like Octane or Redshift.  For now, all I've got is C4D and Blender to work with.

@Dez Hey, I know this is super late but in the heat the project, I totally forgot to respond. Thought I'd hop back on to say thank you for your tips. I wasn't able to get going with a new render engine in time but I took your advice on the lighting setups and have been utilizing them on the past few projects, medical and automotive.  Wish I could share a link but I think my hands are a little tied. 

I'll try and update my drivers once I get the project I'm working on completed.  I'm a little hesitant to update things after Mac had an issue with being able to open up the adobe suite after updating my OS way back around 2012.  I'm really surprised my gpu is dying so quickly.  I'm sure it's not unheard of and I've unboxed a brand new iMac with a couple lines of dead pixel before.

@imashination I'm not sure how to check the temperature on this mac pro.  As far as I knew, it didn't have anything built-in for that. 

 

I have recently been having an issue where C4D will freeze up upon opening or closing the application.  It will also happen while the software is in the middle of running (like if I open AE) but it almost always happens during opening or closing. Sometimes the entire computer will crash as the software freezes up and then it will do the glitch screen as it tries to open itself back up after reopening applications.  We have plugged in different screens and remotely accessed the computer and it is showing the same glitchy interface.  Is there anything I can do to prevent this from occurring? I have noticed it has become increasingly frequent.  

Attached is a screen recording of it acting up.  It was one of the more mild instances of it happening.  Usually, the entire screen is flickering abstract rainbows so it's hard for me to capture it. 

Note: I'm running 6 month old Mac Pro and I use R23 and R24 (both have the same issue).  I wanted to rule out any software issues before resorting to return the computer to apple.

 

 

 

 

@Dez I think they look great!  And I'm always happy to listen to any advice offered. 

@Igor I'm using the physical render.  (still waiting for Maxon to add redshift into their standard package )

@Cerbera I'll try adding some more imperfections and see how it goes  I didn't think to use it on standard stainless steel.
Actually, I recently finished some engine internals and near the end the client gave me some great reference shots.   It was really interesting trying to mimic the machined hatching scratches along the surface. 

 

@clarenceOh I didn't think to do that, I just used a standard bland hospital room HDRI .
https://polyhaven.com/a/hospital_room

Does anyone has any have any tips or tricks to offer when rendering metal objects? 

I usually use C4D's built in materials instead of pbr image setups.  For lighting, I try and use a mixture of HDRI's and point or area lights.   However, I find the renders to be a bit bland especially on the the flat surfaced squared machines I'm trying to make look more interesting.  They are supposed to be stainless steel but I wanted them to be a bit more reflective so I mixed it with one of the chromes settings.  (know these are a bit noisy but I kept the render settings low)

Thanks,

Darn.  I was hoping I was oblivious to some secret underground 3D model hub 

I've been given a lot of tasks recently that involve making custom city scapes and building interiors/floor plans.  As much as I'd like to use purchased stock, I haven't found a whole lot beyond very modern interiors and major metropolitan city scapes. Do you guys know of any sites to purchase libraries/packs of stock models of that nature? Right now I'm on the hunt for more rural scapes (think the midwest instead of California or New York).  

These are the sites I've been looking through:
https://www.turbosquid.com/
https://sketchfab.com/store?ref=header
https://www.cgtrader.com/
https://assetstore.unity.com/

Weird, I wonder why they'd stop supporting it.  They did the same thing with the Pro Render setting.
Thanks for the link!  I'll have to give them a watch.

I have to do an animation that includes depth passes and After Effects built in effects for handling them aren't the greatest.  That's why I was curious if utilizing DaVinci would be the better option. Probably not since I haver very little experience in the software doing compositing and I noticed that it wasn't listed in the target applications in C4D. So after looking around, I still haven't found any tutorial workflows from C4D's standard renders into DaVinci and was wondering if anyone knew of any other sources of info on the topic.

Perhaps it needs baked?

 

You've got that unlimited commercial license so you should be good. 
We had an old perpetual version of R18 we had to get reinstalled on my computer when I joined up.  The Maxon team is pretty fast to respond in the event that you have any issues once that subscription license stops working.

I still can't figure it out.  I opened an older version of the file and it works but when I try and load the same png sequence into a new file/texture, it doesn't work.

I may have been getting my software mixed up on what can and cannot utilize png sequences.   I ended up re-rendering the sequence as an mp4 and made another filled/inverted in AE for the alpha channel.  This was an an old file handed off to me and the previous person must have got it to work somehow.  So I am still curious on how they did it.