Patrick Elliott wrote:

> (A) doesn't let you, that easily any way, place the camera where you are 
> looking and it looking at its own result, which is looking at its own 
> result, etc. Yeah, its still possible, but it usually requires feeding 
> the same scene through multiple times. Its not **that** much different 
> than using a reflective surface though, in terms of how it would work. 
> You are just displacing the path of your ray to a new location, then 
> continuing, until you reach your recursion limit. Would be fun to see 
> how practical it was to do that at least, even if it proved too 
> inconvenient to use.

This is precisely what occurred to me as I was writing the stuff above; 
the texture is really a kind of reflection/refraction that displaces the 
eye of the new ray in addition to changing the direction, so it would 
certainly be very simple to implement.

BUT

I'm not so sure that it's a great priority.

Regards,
John

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