Problem with Windows in a room

Hi,

I built a room (with two surfaces – a “real” rom…no simple cube) and adjuste the normal vectors. Then I cut a “whole” into the room: A window.

I put a area light and an emitter plane behind it in the room together with a cam.

Then I rendered with yafray. Everything comes out as expected – except the window.

If I made the the “world material” completly black…the window comes out as a black whole (though no event horizon…sigh :wink:

As soon as I only put a quantum of a nothing of light and color to the world material the windows swithes polarity and comes out as a white bright area.

What is going on here ?

Thank you very much in advance for any help or hint!

Have a nice weekend!
mcc

PS: Blender 2.37a (CVS) & Yafray 0.8 CVS on a LINUX BOX

If you set your world to White with GI, how does it work?

Hi Masterhoshi!

Thanks for your fast reply ! :slight_smile:

Do you mean “Yafray GI” with GI?

In this case ("Yafray GI set to Full/Best and World colors both to white):

The window comes out as a bright white area…

Sorry…no change so far…so what next ?

Have a nice weekend!
mcc

Ok, I assume your looking for a light through the window effect? Is the room (inside) being lit at all? If you’re looking for a halo effect (light beams) that requires a setting on the lamp itself to produce. Photon lights won’t provide help with the window. Also, just to be sure is the window area an open area or does it have ‘glass’ over it. If it has glass you may have an issue. Last I tried it casts ashadow and blocks GI (Yafray GI.)

Hi,

thanks for your reply!

As described in my first mail, I will first try to switch off
this “digital” effekt of haveing either a complete black
window or a complete white window. I cannot see anything
a had set for the world material through the window.

To describe my setup of the scene again
(from my inital mail):

<cite on>
I built a room (with two surfaces – a “real” rom…no simple cube) and adjuste the normal vectors. Then I cut a “whole” into the room: A window.

I put a area light and an emitter plane behind it in the room together with a cam.
<cite off>

There is no glass. It is a whole.

Any further ideas, what’s happening ?

Kind regards,
mcc

I think your GI is being blocked by an enclosed room. Could you post the blend?

Yes…of course but…
…I have no webspace…
Do you know a solution?
A temporary place for my file ?

Thanks a lot in advance !
mcc