Messages

1

[C4D] General Discussion / Re: Why does Corona Sky horizon look so bad?

« on: Today at 19:13:48 »

yes, here's another phenomena, sort of reversed micro-roughness - as you can observe IRL and photographs, fresnel on horizon isn't present, while in shorter distance reflection from water surface is stronger (appears normal), my thinking is, because farther from coast surface gets rougher, more dispersed, w/ higher waves culminate to matte/diffuse appearance  overrides smooth surface fresnel ...     

2

[C4D] I need help! / Re: Corona + Scene Nodes

« on: Yesterday at 00:09:27 »

I'm out of context here so, if you care, a ready made scene should be of most help...
But fundamentally, what is your goal?

3

[C4D] I need help! / Re: Burnt Metal Material

« on: 2022-05-14, 00:32:50 »

Heating from welding causes metals to oxidize, which consequently creates a layer of thin film.

Make Legacy Metal and apply it as texture.

Note: Different coloration means different thickness, some variation and specific IOR...
eg.


PS
Use Distance map & Curvature to your advantage.

4

[Max] Bug Reporting / Re: amount of lights and viewport/max performance

« on: 2022-05-12, 16:44:46 »

More segments lights have, more noise is produced, more energy it takes to simulate physically correct light transport and less rays are sampled in same amount of time.
(see attached example w/ Corona For C4D v9daily)

Any improvement is always welcome :)
In this regard, have you done any experimenting or research with physics-based differentiable rendering?

5

[Max] I need help! / Re: Stain glass Window effect

« on: 2022-05-12, 14:46:25 »

Also, you can make Volume box just where rays travel.
But note that caustic rays don't show behind glass. Which is what you're trying to achieve. (use thin glass or better, none at all, only textured spot/area light).
reference: How to make caustics produce volume light

6

[C4D] Bug Reporting / Re: Shading issue

« on: 2022-05-12, 12:40:59 »

You can render with Physical or AR to get "correct" reference...
It'll also make it clear for others to reproduce what is expected.

7

[C4D] I need help! / Re: Noise in image

« on: 2022-05-12, 12:30:49 »

Remove glass...

8

[C4D] I need help! / Re: Alpha Image Quality Problem

« on: 2022-05-08, 11:14:53 »

few things:
- needs higher sample level/count
- DOF used, but object is out of focus
- in Opacity channel check & see, if Clip helps
- bad alpha map...


if nothing helps, it's best to provide a testscene

9

[C4D] I need help! / Re: Corona pop-out Error

« on: 2022-05-08, 11:08:31 »

Again, now non-stop for ~5min Corona & C4D are rendered unusable.

10

[C4D] I need help! / Re: Corona pop-out Error

« on: 2022-05-07, 19:15:48 »

It has happened to me too yesterday, but just once when i was experimenting w/ lights & volumes...(W10, C4D 26, CRN v9 daily)

11

[Max] I need help! / Re: Stain glass Window effect

« on: 2022-05-06, 22:44:52 »

Have you checked Volumetric Fog?

12

[C4D] Bug Reporting / Re: shift in displacement and texture map

« on: 2022-05-05, 16:20:58 »

And behind the second wall? ha ha ;) Is your test with or without Corona?

Yeah, something complex happened :D "I or..."
-------------------

@frv
As noted above, give more segments to your geo... it's also what you observed w/ fillet, which basically gave you "supporting edges". It's quite common...

13

[C4D] Bug Reporting / Re: shift in displacement and texture map

« on: 2022-05-05, 14:28:00 »

Well, here's my go:  UVW (in front) vs Cubic (behind)

14

[C4D] Daily Builds / Re: Why we can't add some texture or gradient to Corona light in C4D?

« on: 2022-05-05, 12:32:20 »

Maybe something alike, since it doesn't need to be RT... :)

15

[C4D] Bug Reporting / Re: shift in displacement and texture map

« on: 2022-05-05, 11:38:03 »

More segments you add to geo, more precise and visually better displacement gets.