Forum: Poser - OFFICIAL


Subject: Indirect lighting - comparison

TrekkieGrrrl opened this issue on Aug 04, 2009 · 97 posts


bagginsbill posted Wed, 05 August 2009 at 8:44 AM

Hi folks. Guess what everybody is doing wrong?

What is your Diffuse_Value on these props? Is it 1? Hmmm? A white color with DV = 1 means what?

Anybody ... anybody?

It means that 100% of the light that hits the surface is reflected in each IDL calculation.

This is impossible in real life, and will cause over lighting and artifacts.

In real life, each time light bounces from an object, less is sent than arrived. With shaders that tell Poser to model an EQUAL amount of light is sent as arrived, that means each bounce is just as bright as the last. After six of these bounces, you have an impossibly over-lit scene.

I, of course, have been using shaders with DV = .8 for a long time, even before GI. My shaders don't blow up with Poser 8. All the shader you have gotten elsewhere likely do blow up.


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