Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] I need help! => Topic started by: serious on 2021-09-29, 15:22:43

Title: Alpha image on material Errors
Post by: serious on 2021-09-29, 15:22:43

Hello guys!
I have a problem with Corona. I'm trying to put a logo on polygon, but i have problem with the background.
I read many threads about that and i tried everything, but nothing work.
This is what i have done: i put in a Corona material the .png in diffusion ant the alpha map in opacity. I tried to put color read in linear and then i apply that material in the object. I don't understand why i have still the black rectangle in the background.
I upload the image with the problem and what i have done with materials.

Title: Re: Alpha image on material Errors
Post by: BigAl3D on 2021-09-29, 16:04:54

Is that a render or just the viewport? If it just the viewport, then there are know issues with the previews in the non-rendered windows.

Title: Re: Alpha image on material Errors
Post by: serious on 2021-09-29, 19:55:31

Nope! Same in the render file!

Title: Re: Alpha image on material Errors
Post by: serious on 2021-09-29, 22:15:36

Ok! In render is better, but now i have another problem! Alpha channels work, but the rest of the cilinder become black!

Title: Re: Alpha image on material Errors
Post by: djstevanovic on 2021-10-01, 23:58:49

Add first material of that cilinder than stack logo after and check mix textures on logo material

Title: Re: Alpha image on material Errors
Post by: BigAl3D on 2021-10-02, 17:59:14

It appears you're doing it right, but obviously, you have missed one little item somewhere. Any chance you can post the scene? I did a quick test and everything works as it should. The displacement is rough since this is a low-res alpha.

Forgot to ask what version of Corona are you using? Maybe there was an issue in the old version.