> Yes I had noticed about the low diffuse value. about the high ambient, I have
> doubts since toon shaders still need to be able to get good dark shadows.
And I forgot about the outlines.
Here, is another place to use an aoi pattern.
aoi{[0 Your_Color][0.48 Your_Color][0.48 rgb 0]}
And a suggested finish:
finish{ambient 0 diffuse 1 brilliance 0}
>
> Thanks a lot for your help.
>
> For the Blinn, after some tests I chose to use just the specular keyword, So I
> had to leave the blender IOR feature out.
> For phong an Cooktorrence, the same phong and phong_size.
> For wardiso I used the specular keyword with an increased specularity when spec
> area is set tighter.
>
>
>
>
> About Oren Nayar:
> The values below 1 for brilliance give terminator problems (blocky limit between
> light and shadow) even if I forget about that, varying the brilliance doesn't
> seem enough to look as good as the oren nayar. which seems to process by
> lightening the edge when increasing its contrast sigma whereas brilliance rather
> seems to darken by extending the shadows towards parts more influenced by light.
> I still left things that way to be able to move on.
The blockyness probably comes from the fact that you are using a mesh. 
The normal of some triangles can point toward the light while the raw 
triangle is facing away from it. The light don't bend around to reatch 
that area.

>
> Other than that I Only have Fresnel and Minnaert left to do, but they're a pain
> to conciliate with the texture system I had set up, which already had to make
> use of the "russian mafia doll "finish map"" to map specular to a texture along
> with alpha to a different texture along with diffuse image map and bump map.
> I gave up all the other blender channels, to keep a little sanity, which I'm
> preparing to waste in my fresnel / minnaert attempt :-)
>
>
>
>
>
>
>

Post a reply to this message