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Messages - John_Do

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1
Hi,

There is no focal length parameter on the Corona Camera tag, the setting is only driven by the C4D camera.

2
It will be downloaded and installed the first time you try to open it through the Corona menu in Cinema.


3
I've just stumbled upon this weird "bug", I don't know how I didn't notice it sooner.

The 3d model of the wall is from Quixel, no displacement, just a normal map.

IR - Instance : correct result


IR - Render Instance : weird shading


Prod - Render Instance : weird shading, like a blend between both results.


Another example



Corona 12.2 hotfix
Cinema 4d 2025.2.1

5
Hi,

You have to use the Mapping Randomizer in each material's channel. Just duplicate the first Mapping Randomizer node in the Node Editor to get the same settings on the other channels ( Roughness, Bump etc. )

If you want to modify the settings of all the Mapping Randomizer shaders, either select all the shaders and change the values, or copy-paste values after the fact, like this :


Check the correct order when using other Corona shaders here : How to correctly combine Corona Mapping Randomizer, Triplanar, and Normal maps?

You can use Corona Bitmap shader for more control over the mapping of specific textures. But the UVW channel input (still) doesn't work despite the fact that it's been around for a few versions.

6
The setup works with a native Cloner but only if it is set in Instance mode. I guess the Render Spline tag doesn't support instancing ? It would be dumb.

7
[C4D] General Discussion / Re: Falloff alternate in C4D
« on: 2025-06-20, 11:19:26 »
You can use Mixture (Corona shader) or Fusion (C4D shader).
Fusion is simpler, Mixture a bit more complex but gives more control.

8
Hi,

This setup doesn't work while it should, no ?



Scattering anything other than splines works though.


Corona 12 update 2 hotfix 1
Cinema 4D 2025.2.1

9
Hi Arpit,

Was going to say it seems to be fixed in v13 but no



Scene is attached.

To be clear even with other basic projections mode, Triplanar doesn't seem to fully work. Changing the projection method in the material tag affect the look even if the triplanar is kind of affecting it too. And even in the case of an unwrapped mesh. Here's an example of the effect :



Is this the expected behavior ? Genuinely asking.

10
Just tried the setup with v13, it still doesn't work.

11
Hi,

You need to switch to the Viewport Renderer in the render settings.

12
To be exact, doesn't work with the following setup :

Corona Bitmap + Colorizer + UVW projection

Corona Bitmap + Colorizer works with any other projection method.
C4D Bitmap + Colorizer works with any projection.

Corona 12 update 2 hotfix 1
Cinema 4D 2025.2.1

13
[C4D] I need help! / Re: IR buttons bug
« on: 2025-06-04, 15:32:18 »
This is already logged in our ideas portal - https://chaoscorona.ideas.aha.io/ideas/CMAX-I-71
Cast your votes! :)

Ah thanks maru, added my vote.

14
Hardware / Re: Threadripper & Ryzen builds
« on: 2025-06-04, 14:24:39 »
There will be performance improvements coming from an increase in IPC and architectural changes, probably around 20% at best. This video seems to indicate up to 26% for the non-pro series but that really seems quite high compared to the improvements made on the consumer Ryzen lineup. We'll see, wait for the first reviews but in any case I can't think any of good reason to skip the new version, except for a major price hike.

The 192GB G-Skill kit seems to be the only one available in 4 sticks, I can't find 256GB in 4 sticks. Note that the Zeta R5 Neo is EOL on G-Skill website, it seems that the current generation is the G5 Neo, and from a quick search I can find 192 and 256GB kit available. It's not on the QVL but I'll give it a shot.

Regarding SC performance, I was talking mostly about responsiveness rather than pure performance numbers. I was happy with the 5950X SC performance, the new one is great too in this regard, but I was not expecting any perceivable performance improvement in this departement. As far as I can tell the bottleneck seems to be much more on the software side, using Blender alongside C4D on the same computer I experience it everyday.

And yes I use this one daily as my main workstation. I've considered upgrading to a 9950X and then as soon as possible to it's Zen 6 successor, but even with more cores (24c), architectural improvements and IPC increase, that will probably still be much slower than a 7980X in MT applications. I already have (now) two 5950X render nodes for dailies, and I was really after that massive IR boost. Another scenario I had in mind would have been to upgrade to a 9950X and build another render node based on a 3990X (TR Zen2). It's a bit old but still powerful for final rendering, and CPU and MB can be found at a very good price now.

15
Hello,

I think it's a long standing issue which still is present in the latest version. It only affect the bump channel.

It happens if the object has no UVW Tag or if the mesh components aren't properly unwrapped / have no UV coordinates. Projector shader doesn't work too.
The workaround is to unwrap properly the mesh or to choose another projection.

Corona 12 update 2 hotfix 1
Cinema 4D 2025.2.1

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