Visible camera? WTF?

[DarkLight]

Hello testers
My second bug here, because I reported bugs directly to Crubadue on ICQ. But I think this bug is deserving to be posted here, I want to know your skills, tips and opinions. Just read, see picture and pick this scene, and try to render it on your machine.


I found this bug already in beta 7 or 8, I dunno exactly. Look at this picutre - you can see one yellow reflective sphere and one red cone. Then you can see it's reflections of 100% reflective surface (reflecting this two objects, lights and "outside environment" of room... But, on outside is grey sphere - WHAT THE HELL IS THAT?

In scene is not any other object than room, sphere, cone and lights, no next sphere outside of room. When I will move or rotate with camera in viewport and render scene again, this grey sphere will move too, to same place where camera is in viewport. I asked Crubadue on ICQ if is possible to see camera in render. He said it's not.

and, here is the picture:


and scene:

http://www.cgart.cz/tmp/asgvis/camera_bug.3dm

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BTW, do u want joke? For the first time I rendered this bug in beta 8, lets check a picture. The outside sphere (probably camera) is lightly yellow, but in beta 9 (upper) its grey. LOL

[corey]

Visible camera? WTF?

Darklight,

The normals of your plane are facing the wrong direction. You need to either flip your plane or enable the double sided option in the material options.

Well will look into this a little further.

Best regards,

Corey

[DarkLight]

Visible camera? WTF?

Ah, I got it with colors of spheres - GI color is different, In beta8 there was lightly yellow, now its only white...

Anyway, I can't understand why bad direction of normals causes visibility of "camera"?! Or what is that.....

[joe_b]

Visible camera? WTF?

Yeah that is very odd. I'm not really sure what the hell that is....The camera in VRay, as far as I know, has no real geometry whatsoever. I have been walking through my debugger trying to see when/where this phantom mesh is entering the scene. So far I am puzzled by its existance, but I will continue looking for the reason behind it...

[DarkLight]

Visible camera? WTF?

joeb: Crubadue is right, when I switch double-sided on in material of 100% reflective surface, or I switch normals directions, phantom sphere will not be visible anymore. But, bad normals causes (non)visibility of surface(s), not visibility of secondary objects in reflections, refractions etc....

It has got solution, anyway, I think this cant be possible in final vray But, thats work of programmers :P

[flipside]

Visible camera? WTF?

You can already be glad, that wrong normals objects render reflections in vray.

If you model everything correctly (=with thickness) you will avoid lot's of vray problems!

[DarkLight]

Visible camera? WTF?

flipside: Yes, I'm glad, it solved my problems. But anyway I'm curious why its possible because I think things like this you will not meet every day =))))))

[flipside]

Visible camera? WTF?

Yeah, pretty weird stuff going on there! I blaim artificial intelligence, soon rhino will do all the rendering on its own, no need for us anymore

[SaadUrRahman]

Visible camera? WTF?

Only thing that comes to mind is that it could be a camera distortion - which shouldn't cause that. If you look at the object it appears to be smack dead in front of the camera.


/BlueShift