Mysterious Light...?

[jophus14]

I have attached 3 images. The first is the WIP of the room with an ottoman in it. The second is the same scene but with a chair and ottoman in it. For some reason there is a huge light explosion behind the chair. The third image is a top view wireframe of the scene. Any idea what is going on here? The only light that is in the scene is a VraySun. I am using a VrayPhysicalCamera as well.

 

 

EDIT: If I exclude the chair from the VraySun, I don't get the light explosion. Why would the VraySun affect the chair in this manner if the chair is contained within the room and there is a solid wall separating the two? It doesn't make any sense.

[CRD]

what's your GI method? Sometimes Lightcache can do that with materials with a 255 diffuse color. Try IR+QMC to test.

 

Also, are all your room surfaces (walls, floors, ceilings) boxes not planes?

[jophus14]

I am using Light Cache. My walls are boxes and my floor & ceiling are planes. I deleted my Vray Sun and decided to use a VrayLightPlane instead because everything that I added into the room had to be excluded from the VraySun in order for it to work.

[CRD]

Sometimes the light leak thru a single faced surface, especially if you have the feet of the chair penetrating that single face floor. Add a "shell" to the floor and ceiling and try again with your original sun.

 

Your lighting is great, so I'd hate to see you change it for technical reasons.

[jophus14]

I plan on rendering out the image tonight a posting the update in the morning. Thanks for the tip.

[dagor]

yeah CRD is right! there is single face problem!

make you room from one mesh with welded point and without holes, you floor and ceiling must have thikness and it will be good if you weld it with walls.

[jophus14]

I have applied a Shell modifier to my floor and ceiling with a thickness of .5" and that still didn't get rid of the blinding light that effected everything except the ottoman and books. I attached the latest image that is lit using a VrayPlaneLight in the window. I still have work to do on it such as a floor lamp, maybe apples in the bowl, etc. Any suggestions?

[maxmarty]

I had the same Problem with a thin wall.

 

One solution i figured out was to shell-modify the wall.

 

The second solution was to select all objects of my scene and scale them about 400% (Geometry, lights etc.). Don´t ask me, but the light leaks went away.

I use vray-sun for Shadows and one vray light in addition.

 

But this seems to be a very unconvincing solution.