Le 25/06/2012 10:08, Thomas de Groot nous fit lire :
> works correctly until the above scale value. Use a value of >=100*10e4
> and the sphere becomes black.
> 
> Is this normal for version 3.7 RC5? I seem to remember that with lower
> versions of POV-Ray on could go at least to 10e6. Especially with the
> Ringworld scenes back in 2010 the scales used where much larger without
> any black out.
> 
> Working with windows version of POV-Ray and Win7 x64
> 
> Thomas

Confirmed with RC6 (adding #version & assumed_gamma).

Might be related somewhere with flyspray entry #226, or not.
(it seems not)


With 100*10e4 :

Ray->Shape Intersection          Tests       Succeeded  Percentage
----------------------------------------------------------------------------
Sphere                          480000          480000    100.00
----------------------------------------------------------------------------

With 99.9*10e4:

----------------------------------------------------------------------------
Ray->Shape Intersection          Tests       Succeeded  Percentage
----------------------------------------------------------------------------
Sphere                          960000          635272     66.17
----------------------------------------------------------------------------
Transmitted Rays:            480000
----------------------------------------------------------------------------


Playing with configbackend.h (source/backend/) MAX_DISTANCE &
SMALL_TOLERANCE restores the previous situation.

(MAX_DISTANCE in RC6 is 1.0e+7 instead of 1.0e+10, SMALL_TOLERANCE in
RC6 is 0.001 instead of 1.0e-6 )

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