Jan Dvorak nous apporta ses lumieres en ce 2008/02/24 06:34:
> Severi Salminen napsal(a):

>> And I love the results so far: it is so easy to make more realistic
>> looking images with a path tracer than with "conventional" ray tracer
>> IMO. Even the last sphere image I posted looks so natural to me. I
>> wonder how easy it would be to reproduce it with POV.
> using high radiosity settings with no conventional light source will do 
> the same. I'm thinking of:
> radiosity{
>   error_bound 0        //to prevent any reuse
>   count 1              //to prevent getting damn slow
>   pretrace_start 1     //
>   pretrace_end 1       //these won't be used either.
>   minimun_reuse 0      //necessary
>   normal on           //this won't hurt the performance
>   #declare s=seed(Parse_String(date("%Y%y%j%H%M%S")))
>   #declare d=VRand_On_Sphere(s);
>   #if(d.y<0)
>     d=-d;
>   #end
>   samples{1,d}
>   randomize on         //a (lame) attempt to randomize the sample space.
>                        //adapt adc_bailout and max_recursion as you like
> }
> The problem is that the light ray always reaches the surface at the same 
> angle (different from ray to ray). This might (and will) produce 
> artifacts (honestly, I'm interested in these artifacts), it might even 
> go all wrong (the first bunce will be OK).
> 
Sory, but there is no samples nor randomize in the radiosity settings.
samples is a media quality setting.
There is no "randomize" keyword.

-- 
Alain
-------------------------------------------------
You know you've been raytracing too long when you keep a blacklist of people who 
ask questions about 3DFX products.
Alex McLeod a.k.a. Giant Robot Messiah

Post a reply to this message