Gail Shaw wrote:
> 
> Can anyone explain why crackle is so slow
> when used as a pigment function in isosurfaces.
> The following isosurface renders at 8 pps.
> 
> Any suggestions on speeding this up? I tried rendering a crackle
> pigmented plane and using it as an image_map in an isosurface,
> but it was just as slow
> 
	"crackle solid" has an infinite max_gradient, and the higher the
max_gradient, the slower the render. If you really need it to be
"solid", you might want to specify max_gradient manually, rather than
using eval (but of course, if you lower it too much artifacts may
appear).


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