area lights

April 16th, 2006 by Bramz

Today, I’ve been playing a bit with area lights … They are implemented as a scene object scenery.LightArea that takes another scene object as light surface. I’m not entirely happy with it, but here’s some tests …

The first one is the good ol’ red sphere with a spherical area light. The entire scene is also illuminated by a blueish sky. 9 samples per pixel, 16 light samples for the sphere and 36 for the sky.

area light ...

Happy Buddha under a bright white sky … 9 samples per pixel, 64 light samples

happy buddha under a white sky

The sky surface is a bit troublesome because it LiAR isn’t exactly designed to cope with points at infinity. Currently, it’s just a giant normal sphere, but it should be examined how we can improve that.

We also need to be able to texture map the area lights so that we can use a nice HDR image as sky =)

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