ziggie opened this issue on Aug 05, 2009 · 761 posts
bagginsbill posted Tue, 08 September 2009 at 5:45 PM
vilters,
Hmmm. I'll look at it, but here's the thing. The floor and ceiling are at a very shallow angle with respect to the light source. But with the shader set up the way it is, those horizontal surfaces will give off as much diffuse reflection as the walls, and they shouldn't. Based on the Lambertian model of diffuse reflection, the floor and ceiling should be barely lit by the light source, contrary to how you've got it set up. I think
But I'll do the experiment, and figure it out. You may be right that something isn't behaving correctly.
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