>stbenge  on date 13/09/2009 01:29 wrote:
> Hello,
> 
> Here's my attempt at recreating an opal. It's not physically accurate.
> 
> It's a mesh stone shape, with many mesh inclusions. Each inclusion is a 
> disc-shaped chip, colored randomly, and given a specular highlight with 
> a metallic value of one to really bring out the color. They were placed 
> randomly. The ones residing inside the stone were rendered, the rest 
> were not.
> 
> Funny thing, the luminous bloom pass took longer to complete than the 
> initial render itself. For some reason the black parts of the HDR image 
> were the slowest. It could be an error in my code...
> 
> Sam
> 
> ------------------------------------------------------------------------
> 
Fine.
Other inspirations for you:
http://minerals.caltech.edu/Silica_Polymorphs/index.html
;-)
Paolo

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