Thorsten Froehlich <tho### [at] trfde> wrote:
> Nope, just trace a few (four perhaps) more pixels one pixel off in each
> direction.  Would be slower, yes, but also simulate film more accurately.

  That would be like a kind of blur which scales the samples taken from
outside the current pixel so that only very bright samples will have a
visible effect in the current pixel?

  However, that would not be enough. The brighter the object, the larger
the color bleed. You can't achieve that with just four extra rays. And
even if you used more rays, you would just get graininess, which is not
a nice artifact.

  A simple 2D processing of the pixels would get a nice result fast and
without artifacts, and will probably not look almost at all different
from a raytraced version where you send a million rays around the current
pixel.

-- 
#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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