On 12/14/2010 7:53 PM, clipka wrote:
> Working on a library of textures for Poser figures.
>
> Here's DAZ's Stephanie 4 up close.
>
> Most textures are more or less tweaked versions of what PoseRay
> generates, except I'm using a homebrewn macro framework; eyes needed
> more work; teeth use subsurface scattering.

Some tips that worked for me:
-no specular for any eye part. 10% reflection on eyesurface with a nice 
room HDRI background.
-remove specular and bump from hair for faster renders. Also no specular 
on the hair or it will look like a silk cover over the head.
-Lip: No specular and 5% reflection. Works best with a nice specular and 
bump map.
-Skin: specular of about 0.078 and roughness about 0.025. No phong.
-Bilinear interpolation works best for most maps. Bicubic just does not 
work well for transparencies.
-No ambient for the skin or eyes.


I have been trying to modify PoseRay to get a more consistent result 
from Poser using the diffuse, specular and bump maps plus some some 
pigment macros. Unfortunately Poser materials using the node system are 
typically so badly implemented that many skin textures are just a mangle 
of useless nodes. Sometimes Poser nodes are used as a hack to get better 
rendering in a particular lighting making them useless for any other 
scene. To the node problem you can also add bad maps with specular, 
reflection and shadow effects baked in. I also think that lack of 
direction from Smith Micro on how to properly define a basic skin 
material using nodes is what creates this mess.

This makes it very difficult to translate a Poser material to POV-Ray 
SDL. I am sure that each of the Poser nodes can be easily duplicated in 
POV-Ray but many times I find that just using the basic components 
(diffuse, specular, bump & transp) plus POV-Ray enhancements yield 
better results.

The image I attached is Stephanie 4 with the Natasha elite maps. POV-Ray 
3.7 windows beta 40 which works much better than 3.6 for image map 
handling.

FlyerX

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