Using MegaPoV radiosity, the test scene (240x180, no AA) was rendered in
265 seconds with :
radiosity{
    pretrace_start 0.08
    pretrace_end 0.02
    count 300
    nearest_count 8
    error_bound 1
    recursion_limit 4
    low_error_factor .5
    gray_threshold 0.0
    minimum_reuse 0.015
    max_sample 2
    adc_bailout 0.01/2
}

Using WinPoV 3.1g patched with my function, the rendering time was 582
seconds with 300 samples

Stephane

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