Digital Art Zone

 
     
Dan Whiteside’s fog mat and transparency tree leaves
Posted: 16 October 2012 01:47 AM   [ Ignore ]
New Member
Avatar
Total Posts:  23
Joined  2008-01-02

Bonjour,

Dan’s fog is a great discovery… http://www.daz3d.com/forums/viewthread/5266/P15/#74617

But,  there are artifacts when rendering with tree leaves.

the transparency of the texture of the leaves can see through the fog…

You should use the correct foliage shape and texture without transpence to avoid the problem.

Image Attachments
tree.jpg
Profile
 
 
Posted: 16 October 2012 06:43 PM   [ Ignore ]   [ # 1 ]
Member
Avatar
Rank
Total Posts:  207
Joined  2003-10-09

Hi Gabriel;
Unfortunately, that’s a flaw in the volumetric algorithm - Alpha Transparency doesn’t work “inside” V-Textures. My understanding this is a conceptual problem that is extremely difficult to fix.
-Dan-

Profile
 
 
Posted: 16 October 2012 06:52 PM   [ Ignore ]   [ # 2 ]
Active Member
Avatar
RankRank
Total Posts:  294
Joined  2003-10-10

If I am not mistaken it all comes down to the alpha map…
If I had the product I could delve into it and see…

I had this same problem using a png file as an alpha and when I switched over to a tiff it changed…?

 Signature 

As Always B3D
..........................
My radio Station…
http://www.pandora.com/?sc=qm81447313#/
.........................
http://www.foleypromagic.com
http://www.michaelhershman.com
http://www.artwanted.com/foleypro
http://foleypro.deviantart.com/
http://home.comcast.net/~foleypro

Profile
 
 
Posted: 17 October 2012 02:33 PM   [ Ignore ]   [ # 3 ]
New Member
Avatar
Total Posts:  23
Joined  2008-01-02

Fortunately, you can avoid this flaw ... Do not use the alpha mask texture!!!

Profile
 
 
Posted: 17 October 2012 07:02 PM   [ Ignore ]   [ # 4 ]
Member
Avatar
Rank
Total Posts:  207
Joined  2003-10-09

Cool! Good find.

Profile