Micha Riser <mri### [at] gmxnet> wrote:
> Ignored in respect to texture calculations and shooting new rays. The 
> intersection calculation has to be made anyways (otherwise you could not 
> know that the invisible object is hit at all).

  No. Intersection calculations don't need "to be made anyways". If you
don't want to test intersections for a certain object, then just ignore
that object when making intersection calculations.

> You already have calculated all intersections for this ray so you need no 
> new intersection calculations for the intersection after the transparent 
> object.

  I think that would be pretty similar to what shadow testing rays do.

-- 
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -

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