Topics

1

[C4D] I need help! / Setting the maps value/amount

« on: 2020-09-14, 12:34:23 »

Hey there folks!
Recently I've been experimenting with Corona for Cinema 4D. I'm coming from 3Ds Max and everything is pretty much the same except for one thing:

Setting the value/amount/level of contribution a map will have on the slot that it's placed. And I can't find it anywhere.

What do you mean by that? For example: I want to have my glossiness mapped, but at some level, I would like to have the 0.8 regular value contributing to the glossiness to (like a mix of both the regular 0-1 values and the map). Setting things like this it's really helpful sometimes. 

https://farm8.staticflickr.com/7371/10978244716_00a9c4c3b3_o.jpg - this image wasn't made by me, but here you can see a good example. At the "maps" tab, every value is like an opacity if you will, so you can have a mix of the glossiness value (0.98 at this case) + 70% of the map. On the diffuse you can see the same approach with a mix of a color and a map.

Does anyone know if this is available on Corona for C4D or it's something only for 3Ds Max? If so, is there anyway around it?

Thanks!   

2

Learner’s Corner / Interior Render • Critiques and Tips

« on: 2020-05-05, 06:06:14 »

Hello everyone! I am trying to improve in Corona and make a better use of the forum in general.
This is not a critic, I really like it here, but is just what I see nowadays: I feel like art forums in general have lost their purpose, instead of the majority of people helping each other like the "old days", it became just a show off of everyone's work.

Therefore, I am here to share my beginner's work and ask for critiques and tips that would help me improve it. I think that hearing different opinions and tips, makes me think more before getting my hands dirt (thoughts like "how should I approach this now?" or "what is the best way to light my scene and achieve certain look that I am aiming for?")

This is not my first time with corona, but after some time dedicated to studying, I think this is the best result that I got with it so far.

It was just an exercise, so the void/hole on the windows was more me not being able to find a proper window model. By the way, most of the times I feel like grabbing a bunch of different models and just gathering them in the scene in a organized manner, doesn't make the scene actually feel like my own creation. I know that in a production pipeline you can't model everything, but it feels strange anyway. That's why sometimes I use the native windows and doors from 3ds Max and tweaks some stuff in the geometry, but I don't know if this is the best approach.

I've attached the images below and also some issues that I managed to point out myself but I don't know the solution/best way to deal with it.
1) Orientation of the textures on the wall - I've used Corona Triplanar Map on the material and applied to the two objects that generate the walls for the rooms, but as you can see the orientation of the texture is different. This happens due to the geometry of the objects being different right? Would it be better to use a Unrap UVW?

2) Hard edges - I've chamfered all the edges using a chamfer modifier. Even though I did that, you can find some hard edges on the window and a hard transition between the floor and the wall, looks flat and dull. Is there any tip to make this Wall/Floor edge look more realistic?

3) Dark edges - As you can see on the Y shaped form in red, when the walls and ceiling meet each other, there's a lot of ambient occlusion. I've achieved that using a Corona AO Map. The reason why I did that was the fact that without this, the walls would sort of blend each other, or get a very subtle occlusion when they meet. So my problem here is: with AO, too dark, without AO to flat. I guess the answer is obvious (just tweak the settings of AO Ronaldinho you dumb fuck!) but I could use a little help with this as well.

Any tips, comments and critiques are going to be extremely helpful! Cheers!

3

[Max] I need help! / Render time taking to long

« on: 2020-04-07, 18:29:02 »

I know that someone posted this issue a while ago and before posting, I've done a little bit of research to see if I could find the solution, but I couldn't.
So, here I am trying to solve my problem.

I have a simple scene, lit with Corona Sun and Sky (with a color correction just to adjust some things).
Simple materials as well.

The first time that I was trying to render the scene, to test some things, it took about 1 hour and a half (not that high resolution, around 2000x1500)
The only thing that I changed was a material on the wall (it's a interior scene) but the material was really simple (mapping the glossiness and bump only with very little tweaks).

I didn't change that much of the standard settings, but now when I try to render I receive estimated render times as high as 6 to 10 hours.

I don't know exactly what is wrong. Maybe I am running out of RAM, but this is strange because I guess it wouldn't take 1 hour at the first time.
I've attached some screenshots so you guys can maybe figure something out of them.

Free Ronaldinho

4

[Max] I need help! / Lighting interior - uniform/diffuse lighting

« on: 2017-12-28, 17:32:28 »

Hey folks, I have a problem with interior lighting in Corona.
When it comes to exterior lighting, things go well, with HDRi or Corona Sun/Sky. Simple setup.

But when it comes to trying to achieve a realistic look in interior scenes I can't get/understand the settings and concepts to do so.
I always get areas that are burnout (even with exposure and highlight compress) and others that are dark, and I can never achieve an uniform lighting look.

I've been trying to grasp the theory behind this, and not just simply drag and drop corona sun/hdri, and I've tried to understand what is the difference between what I am doing and the lighting setup in these tutorials for example:

https://corona-renderer.com/blog/francesco-legrenzi-interior-making-of/

https://www.viz-people.com/making-of-scandinavian-apartment/

But I cant get a result not even close from these ones. I know that Corona is very powerful, even with the simplest setup, so I know that there might be some gap in what I'm doing. 
I am going to attach simple tests that I did, these are just for training, so you can maybe spot some errors (Path tracing + UHD Cache on both).
Any advice would help.

Thanks in advance!