Messages

1

[C4D] Daily Builds / Re: IPR refresh often at change of tonemappng paramaters

« on: 2025-07-10, 14:03:47 »

Don't know if it's a "bug" or by design but it happens only when the render camera has a Corona Camera Tag.
It's the syncing of the tonemapping parameters / stack from the VFB to the Corona Camera Tag that triggers the IPR refresh. Delete the tag and no more IPR refresh.

2

[C4D] General Discussion / Re: Texture with UDIM

« on: 2025-07-08, 16:39:31 »

I guess it's a bit too soon, the update was released after v13's release.

Even without talking about the new features, the Corona Bitmap shader has already some bugs waiting to be fixed for a long time ;)

3

[C4D] Bug Reporting / Re: BUMP issues with Render instances

« on: 2025-07-07, 20:17:37 »

The issue is still present in v13

4

[C4D] Bug Reporting / Corona Bitmap + Filter + Bump

« on: 2025-07-07, 18:30:59 »

This setup still doesn't work as it should in v13 + C4D 2025.2.1 :



And Corona Color Correct is not a viable replacement since the settings don't affect the output when the shader is connected to bump.

5

[C4D] Bug Reporting / Re: Gamma issue with viewport rendering

« on: 2025-07-03, 09:24:43 »

Hi maru,

I hope my answer will be enough to justify fixing this issue but here are few reasons :

- first it's not interactive, it's a final rendering in the viewport
- it's fast : great to quickly check some details in native res and full quality
- it's unobstrusive : there is no additional window to move (VFB IR) nor any settings to change to get the full quality from the get-go (viewport IR : the detail setting locked at 50% in any new C4D session, this thing is annoying)
- it's reliable : there is no risk of crash (VFB IR) and no lag (viewport IR)

In short it just worked as expected and it fitted nicely in my workflow. Would be nice to get it back.

6

[C4D] Bug Reporting / Re: Triplanar doesn't work in bump channel if the mesh has no UVW coordinates

« on: 2025-07-02, 11:16:21 »

Thanks Maru

7

[C4D] I need help! / Re: Is there no focal length in the corona V13 camera?

« on: 2025-06-29, 09:06:46 »

Hi,

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

8

[C4D] General Discussion / Re: Chaos Corona 13 does not have material installation options

« on: 2025-06-27, 08:57:38 »

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

9

[C4D] Bug Reporting / Normal shading bug with Render Instances

« on: 2025-06-25, 16:18:08 »

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

10

[C4D] Bug Reporting / Re: Triplanar doesn't work in bump channel if the mesh has no UVW coordinates

« on: 2025-06-24, 09:35:13 »

Does someone care ?

11

[C4D] I need help! / Re: How to use Corona Mapping Randomizer on multiple textures in C4D?

« on: 2025-06-23, 09:05:33 »

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.

12

[Scatter] Cinema 4D - Bug Reporting / Re: Scatter C4D splines + Render Spline Tag

« on: 2025-06-20, 11:29:17 »

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.

13

[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.

14

[Scatter] Cinema 4D - Bug Reporting / Scatter C4D splines + Render Spline Tag

« on: 2025-06-20, 11:07:46 »

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

15

[C4D] Bug Reporting / Re: Triplanar doesn't work in bump channel if the mesh has no UVW coordinates

« on: 2025-06-16, 12:40:28 »

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.