Quote - Going back a few pages a question has just occurred to me, the glowing textures, are they specific textures or are they settings that can be added to any texture?

Any polygon that isn't black lights other polgyons. It doesn't matter why it lights them. It could be because it is lit by a light. It could be that it has a hard-coded ambient color. Either way, it is included in the general lighting.

My environment sphere is self-lit, using a photo to determine the color of every pixel. Therefore, it lights the scene, as long as something doesn't get in the way.

A rectangle with an "Exit" sign in ambient red also lights the scene. Nothing special about it.

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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)