On 03/11/2016 10:37 AM, Jaime Vives Piqueres wrote:

>> Interesting too is that changing the z directional function to:
>>
>> function { 0.1+cos((select(x,(x+0.5)*2,(x*2)) * 2 * pi) - pi) * cos(pi /
>> 2 - (1-(y+0.5))*pi) }
>>
>> gives a partial image.
>
>    Yes, for me +1 gives one part, and -1 seems to give the rest.
>
> --
> jaime
>

It looks like the difference has something to do with this test in 
<install>/source/core/render/tracepixel.cpp :

//          if (cameraDirection.IsNearNull(EPSILON))
//              return false;

because if commented as shown above, I get the same result seen from the 
posted windows exe result. I'm still playing and I'll post more if I 
learn more.

Bill P.

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