/usr/share/aqsis/shaders/volume/fog.sl is in aqsis 1.8.2-10.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | /* fog.sl - Standard fog volume shader for RenderMan Interface.
* (c) Copyright 1988, Pixar.
*
* The RenderMan (R) Interface Procedures and RIB Protocol are:
* Copyright 1988, 1989, Pixar. All rights reserved.
* RenderMan (R) is a registered trademark of Pixar.
*/
volume
fog (float distance = 1;
color background = 0;)
{
float d;
d = 1 - exp (-length(I)/distance);
Ci = mix (Ci, background, d);
Oi = mix (Oi, color(1,1,1), d);
}
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