OTOY Forums

Hi.

I just ran into a problem in v1.55 that may or may not have already been fixed in v2. But if you look at the attached image, it shows how Octane apparently allows light to venture way out past where it really would go. The scene has a seamless background, and one spotlight shining down on the floor of the seamless. The spotlight itself is a hollow flat-black box, with an aperture hole in the front, and an emitter circle inside it, way in the back. The ellipse I have drawn shows the maximum that light can travel before being cut off by the aperture at the front of the spotlight box. That ellipse shows where total darkness should start.

I have double/triple/crazy-multi checked my math and built test models in my modeler and in Illustrator, and the math checks out fine. But beyond that, if you look at the lines I have drawn coming out of the spotlight, they clearly show that light cannot possibly go beyond the ellipse...The aperture hole would simply block any light that could have gone outside the ellipse.

Has anyone run into this? Attached is an orbx of the scene.

Try reducing the ray epsilon. I'm not sure of the specifics but it seems to be effecting the ray collisions such that this happens...

JEEEEEZ! That solves it alright. But I already had tried that, and in the end had the slider hard right in a last ditch attempt. In fact, working with RR was the first thing I did because of odd rendering problems with it in the past.

Am I going crazy, or can Octane get "stuck" on certain conditions and not be able to recover until it is relaunched? If not, I need to reserve a room at the local asylum.

I have never seen this happen in octane with something like the ray epsilon

Ok...Time to make my reservation. )

Oh! Thanks for the reply!