[Bf-committers] Re: Minnaert shader

joeedh joeeagar at prodigy.net
Sun Apr 10 01:48:24 CEST 2005

Jonathan Merritt wrote:

>Here's an example of the artifacts produced with the "original" Minneart
>implementation that has been referred to online:
>    http://www.warpax.com/temp/minnaert-example-artifacts.png
>The artifacts are the ragged edges of the sphere on the left, caused by
>the intensity of the shader being much greater than 1.0 in these regions.
>This is exactly the same scene as the one I posted earlier:
>    http://www.warpax.com/temp/minnaert-example.png
>The difference between the two is that in the "artifacts" one, I have
>not performed any clamping of the dot product values.
>See how different they are, regardless of the "k"-value?  This is why I
>think that any discussion of exact values of "k" (or whatever we want to
>call this parameter) is almost irrelevant.  To make the shader work, it
>just has to be changed anyway.
I have an idea: call it Minnaert-J ;)

I'm not really sure why this is such an issue. . .just call it Dark, or 
Merritt Shader, or Velvet, or at the very worst Minnaert-C :)


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