Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: MGDesignUK on 2014-09-16, 15:47:33

Title: Help: Hair and Fur Mesh - Corona Renderer
Post by: MGDesignUK on 2014-09-16, 15:47:33

I hope someone can help me out on this. I have created a Moldavian styled roof hut (long dried grasses) using hair and fur in 3DS Max but it doesn't appear to render with Corona; is this right? I have tried converting it to a mesh but the hair turns into cylinders. Is there a way around this problem?

Many Thanks in advance,

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: romullus on 2014-09-16, 16:32:39

Yes, there is. Rendering>Enviroment>Effects>Hair&Fur>Hair rendering options>Hairs - Geometry.  Hair&Fur will be translated to geometry at render time and will render with Corona.

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: MGDesignUK on 2014-09-16, 16:50:25

I've tried doing that but the hair and fur just renders as cylinders rather than 'hair' when it's set to geometry. I've attached some screenshots - the first showing how the hair looks in the viewport and the second how it renders out.

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: maru on 2014-09-16, 19:47:49

Does it render ok in other renderers (scanline)?

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: MGDesignUK on 2014-09-16, 22:17:34

It renders fine with vray so I'm guessing it's something to do with Corona?

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: romullus on 2014-09-16, 23:32:44

Make sure you chose hair as geometry in vray as well, when you do comparison. In my experience, Corona renders Hair&Fur exactly the same as in MR or scanline (as geometry). And your example looks expected.

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: MGDesignUK on 2014-09-17, 10:12:46

So does Corona not support hair and fur in Max when it's not set to geometry?

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: romullus on 2014-09-17, 11:17:46

Unfortunately, not yet.

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: Caue Rodrigues on 2014-09-17, 12:45:17

Hi, works properly here. Only Tip fade feature don´t work with Corona.

Fur_A have default settings.

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: juang3d on 2014-09-17, 13:46:43

crawlewis let me give you a long shot, have you tried apliying a gradient ramp to the opacity channel of the material? Maybe that can give you  tip fade.

It's a long shot, I'm so busy at the momento that I can't try that.

Cheers!

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: Caue Rodrigues on 2014-09-17, 13:59:28

Quote from: juang3d on 2014-09-17, 13:46:43

crawlewis let me give you a long shot, have you tried apliying a gradient ramp to the opacity channel of the material? Maybe that can give you  tip fade.

It's a long shot, I'm so busy at the momento that I can't try that.

Cheers!

I really did not do anything, I only decrease root radius a lot. :)

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: juang3d on 2014-09-17, 15:17:25

I imagined that hehehe, I was trying to give you an idea to achieve that effect :)

Cheers!

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: Caue Rodrigues on 2014-09-17, 15:40:20

Quote from: juang3d on 2014-09-17, 15:17:25

I imagined that hehehe, I was trying to give you an idea to achieve that effect :)

Cheers!

Hehe, thanks juang3d!!

My friend Tiago Medeiros had spoken about this in the corona facebook group, but I gave up because it would greatly increase the rendertime.

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: romullus on 2014-09-17, 15:41:18

Those cutted out tips are caused by random scale in General Parameters. That's the way Hair&Fur geometry works, i'm affraid.

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: MGDesignUK on 2014-09-17, 21:33:51

Quote from: crawlewis on 2014-09-17, 12:45:17

Hi, works properly here. Only Tip fade feature don´t work with Corona.

Fur_A have default settings.

So is this produced by turning it to geometry mode?

Title: Re: Help: Hair and Fur Mesh - Corona Renderer
Post by: Caue Rodrigues on 2014-09-17, 21:58:24

Yes man!