chris1972 opened this issue on Apr 04, 2014 · 11 posts
bagginsbill posted Sun, 06 April 2014 at 6:34 AM
Quote - > Quote - Here's the shader, simple diffuse
That shader does not implement conservation of energy.
Imagine you have light 1 shining at it at 100% intensity.
Now add another light 2, pointed at the same object. Should the specular contribution of light 2 reduce the diffuce contribution of light 1? It should not. That shader, however, does exactly that.
Correct. It is one of hundreds of hacks and goofy compensations motivated by a desire for realism in gamma space before the epiphany of linear workflow was revealed.
Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)