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Well, the Isosurfaces surprise me all the time! It's just on hell of a good
object, and IMHO it deserves a good implementation in an official release.
(That's not my business, though.) I often expect strange results, as I find
the Iso somewhat unreliable, but it turns out it renders quickly and good!
Results of comparision (My p2 400 MHz with some sonloading in the
background.) All with 640x480, 0.3 anitaliasing.
Note that the isosurface was quite a bit faster, but it returned different
stats, for example no parse time. A bug?
Simen.
**** stats ****
Poly version:
Pixels: 307840 Samples: 335720 Smpls/Pxl: 1.09
Rays: 335720 Saved: 0 Max Level: 1/5
----------------------------------------------------------------------------
Ray->Shape Intersection Tests Succeeded Percentage
----------------------------------------------------------------------------
Box 554686 471041 84.92
Quartic/Poly 471112 362128 76.87
Bounding Object 554686 471112 84.93
Clipping Object 263395 233111 88.50
----------------------------------------------------------------------------
Roots tested: 471112 eliminated: 218965
Calls to Noise: 0 Calls to DNoise: 10
----------------------------------------------------------------------------
Shadow Ray Tests: 218966 Succeeded: 1477
----------------------------------------------------------------------------
Smallest Alloc: 28 bytes Largest: 17624
Peak memory used: 97452 bytes
----------------------------------------------------------------------------
Time For Parse: 0 hours 0 minutes 1.0 seconds (1 seconds)
Time For Trace: 0 hours 1 minutes 13.0 seconds (73 seconds)
Total Time: 0 hours 1 minutes 14.0 seconds (74 seconds)
Iso version:
Ray->Shape Intersection Tests Succeeded Percentage
----------------------------------------------------------------------------
Isosurface Bound 554567 468511 84.48
Isosurface 463825 223339 48.15
----------------------------------------------------------------------------
Calls to Noise: 0 Calls to DNoise: 10
----------------------------------------------------------------------------
Shadow Ray Tests: 218855 Succeeded: 1517
----------------------------------------------------------------------------
Smallest Alloc: 28 bytes Largest: 17624
Peak memory used: 97133 bytes
----------------------------------------------------------------------------
Time For Trace: 0 hours 0 minutes 48.0 seconds (48 seconds)
Total Time: 0 hours 0 minutes 48.0 seconds (48 seconds)
Simen.
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Simen Kvaal wrote:
>
> Note that the isosurface was quite a bit faster, but it returned different
> stats, for example no parse time. A bug?
>
No, simply a parse time shorter than 1s...
Jerome
--
* Doctor Jekyll had something * mailto:ber### [at] iname com
* to Hyde... * http://www.enst.fr/~jberger
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