Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: fLuppster on 2015-01-09, 17:38:07

Title: SSS Leaves (trees, grass, hedges...)
Post by: fLuppster on 2015-01-09, 17:38:07

Hi there, i am playing around with some tree/hedge/gras models.
But i dont really get a nice sss-effect on the leaves.

(http://abload.de/img/hedgeeeo5k.jpg)

The best result is just a simple fresnel shader, but im not really satisfied...


Can you help me with the settings please?

Title: Re: SSS Leaves (trees, grass, hedges...)
Post by: borisquezadaa on 2015-01-09, 19:31:52

Post a image of your material settings and if possible you illumination and lets see...

Title: Re: SSS Leaves (trees, grass, hedges...)
Post by: maru on 2015-01-09, 19:49:22

If your leaves are thin, use translucency, not sss.

Title: Re: SSS Leaves (trees, grass, hedges...)
Post by: fLuppster on 2015-01-09, 19:54:22

Unforunately i didnt saved the file.  (facepalm)

The leaves were flat polys and i didnt use the SSS shader, just a fresnel at the transparency channel.
Apart from that i just had a diffusemap and a reflectionmap.

Title: Re: SSS Leaves (trees, grass, hedges...)
Post by: borisquezadaa on 2015-01-09, 20:54:57

Flat poly leaves are best rendered using translucency instead.

Title: Re: SSS Leaves (trees, grass, hedges...)
Post by: fLuppster on 2015-01-09, 23:18:53

Yes, as i said: i did. :P
Used it with a fresnelshader. Are you just using simple colormode?

Title: Re: SSS Leaves (trees, grass, hedges...)
Post by: maru on 2015-01-10, 11:44:06

do not touch transparency/opacity/refraction. Use translucency.

Title: Re: SSS Leaves (trees, grass, hedges...)
Post by: konphon on 2015-01-10, 17:01:36

Quote from: maru on 2015-01-10, 11:44:06

do not touch transparency/opacity/refraction. Use translucency.

Can you give advice , how you created that grass?

Title: Re: SSS Leaves (trees, grass, hedges...)
Post by: maru on 2015-01-10, 17:43:25

Very simple. I made 3 or 4 basic grass blades (some of them were more bent, some of them more twisted, shorter/longer) and used Corona Scatter with slightly randomised rotation and scale. That's all.

Title: Re: SSS Leaves (trees, grass, hedges...)
Post by: fLuppster on 2015-01-10, 18:55:39

Thank you maru. Im a C4D-user, so i dont really understand the material setting 100%.

Level 1 means 100% and 0 = 0% %? So you its 100% reflection?

My C4D material looks like this: (http://abload.de/img/c4dc6sof.jpg)

Title: Re: SSS Leaves (trees, grass, hedges...)
Post by: maru on 2015-01-10, 21:14:09

Sorry but I don't know Corona for C4D and I have problems understanding you. From what I see "level" in C4D is the same as "fraction" in Max and that's all you would need. It's best to do lots of test renders and lots of tweaks until you achieve the result you want.

Title: Re: SSS Leaves (trees, grass, hedges...)
Post by: juang3d on 2015-01-15, 11:56:17

@maru I think he means the values in general not the specific value.

@fLuppster yes, in this case in max 1.0 equals to 100% in C4D.

Cheers!