R^2mark (Radiosity + Ray-tracing = multi-pass) mark

Effect of radiosity energy convergence value

Environment of the Experiment

Radiosity Stage

viewparam	convergence(%)	elapsed time (sec) (hour)
100 		34.7		1666.77	     (0.46h)
 50		70.9		1798.32	     (0.50h)
 20		79.4		2654.79	     (0.74h)
 10		79.6		2734.84	     (0.76h)
  5		79.7		2789.47	     (0.77h)
  2		80.3		4333.33	     (1.20h)
  1		82.4		15276.89     (4.24h)
  0.5		92.2		94917.02     (26.37h)
  0.2		95.6		154553.59    (42.93h)
  0.1		97.6		226341.13    (62.87h)
  0.05		98.9		327125.55    (90.87h)
Hemi-cube resolution is 80x80 (top plane)

RayTracing

200 sec

Result Images

Difference Images

These images are generated with command `pnmarith -difference'. `pnmarith' calculates absolute value of subtraction of each pixel.

office : difference 98.9% - 97.6% 98.9% - 97.6% office : difference 98.9% - 95.6% 98.9% - 95.6% office : difference 98.9% - 92.2% 98.9% - 92.2% office : difference 98.9% - 82.4% 98.9% - 82.4% office : difference 98.9% - 80.3% 98.9% - 80.3% office : difference 98.9% - 79.7% 98.9% - 79.7% office : difference 98.9% - 79.6% 98.9% - 79.6% office : difference 98.9% - 79.4% 98.9% - 79.4% office : difference 98.9% - 70.9% 98.9% - 70.9% office : difference 98.9% - 34.7% 98.9% - 34.7%

First, light sources illuminate the floor, and then the floor reflects light energy to the ceiling, even if the floor is diffuse reflective object. When the energy convergence value is low, this effect is not calculated. Of course, you can also see the color bleeding effect.

Copyright (C) 2000 YAMAUCHI Hitoshi
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