On 22/02/2018 21:58, Alain wrote:
> Le 18-02-22 à 07:45, Stephen a écrit :
>> I know it is a bit late in the day to ask. But I never got round to it.
>>
>> I understand Max Level: but not the relevance of Smpls/Pxl:
>>
>> Ray—>Shape Intersection and Shadow Ray Tests:
>>
>> What if anything, are they telling me?
>>
>> I have a mesh that when rendered using Blender's Pov exporter. Renders 
>> so much slower than when rendered using PoseRay. I cut it down a bit 
>> and the Max Level: was 1/5. So that shot down one theory. :-(
>>
> 
> Max level 1/5 mean that no ray got reflected not refracted.
> 
> Smpls/Pxl is a ratio that inform you about how much over-sampling was 
> done during the render.
> If it's close to 1, then, most pixel needed only a single sample to get 
> the final result. If it's somehing like 10 or more, that mean that, on 
> average, at least 10 subsamples where needed to compute every pixel of 
> the image. This don't take into acount partial reflection or chromatic 
> dispersion associated with refraction.
> A large value may indicate that your antialiasing is to agressive, 
> probably from a threshold that is to low or set to zero. If you use 
> focal blur, then, that value can only be somewhere between the minimum 
> blur samples and the maximum, and can get pushed higher if also using 
> antialiasing or blured reflection, that you set in the camera.

Thanks. I have a troublesome mesh that is taking ages to render and I am 
looking for reasons.
What would a Smpls/Pxl = 0.04 signify?

-- 

Regards
     Stephen

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