Multiple Lights...

Announcements, requests and support regarding the Blender Indigo export script
tannerw_2010
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Multiple Lights...

Post by tannerw_2010 » Sun Sep 07, 2008 10:31 am

I was wondering why in indigo, it only renders one light type for me when i have more than 1??? What I mean is that I have the sun, and mesh emmitters, but it will only allow me to do 1 at a time??? Is this normal??? If not, how do I bypass it??? I have tried multiple render settings and enviorment settings and nothing changes. Do i have to have a mesh emmiter for a sun as well if I want emmiters in my photos??? Thanks

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zsouthboy
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Post by zsouthboy » Sun Sep 07, 2008 12:42 pm

The amount of power each light has is realistic - the sun is exponentially more powerful than a typical meshlight.
Increase your meshlight power by quite a bit.

tannerw_2010
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Post by tannerw_2010 » Sun Sep 07, 2008 2:25 pm

thanks got it working great now

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Kram1032
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Post by Kram1032 » Mon Sep 08, 2008 7:31 am

Just think of a lightsource, switched on, during full sunlight
It doesn't change anything at all. The only thing, Indigo doesn't show in that situation, is that the lightsource still looks bright when you directly look into it. Though, that's a dynamic range issue, I guess...

alex22
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Post by alex22 » Mon Sep 08, 2008 9:17 am

It may be also, because of the size of most emmiters. While you would see the glowing wire of a light bulb in sun light, a totally scattering bulb (where you can't see the inside) would appear much darker, because the same energy is spread over a greater area.
Most light bulbs I seen are rather latter.

tannerw_2010
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Post by tannerw_2010 » Mon Sep 08, 2008 12:00 pm

Well... I though I got it working, but i was wrong. In this render, the sun is turned up all the way, and the windows are set as Exit Portals. I have the sun's intensity turned all the way up, but as you can tell its not making its way through the windows. Whats up with this??? Here is the image

Image

MSUdom5
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Post by MSUdom5 » Mon Sep 08, 2008 1:22 pm

Flip the normals on your exit portals.

MSUdom5
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Post by MSUdom5 » Mon Sep 08, 2008 1:33 pm

One more question: Do the windows have thickness? They shouldn't, they should be planes set as exit portals

tannerw_2010
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Post by tannerw_2010 » Mon Sep 08, 2008 3:26 pm

i tried it, made sure it was a plane and even flipped the normals. In fact, i took off the exit portals just to see if sun was coming through at all on a similar render, and both of the renders with and without the actual "window" and they look exactly the same... somethings messed up needless to say :cry:

MSUdom5
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Post by MSUdom5 » Mon Sep 08, 2008 3:38 pm

Turn the power of the mesh emitter back down. Does the sunlight come back? If so, you just need to find the right power value for your meshlight.

tannerw_2010
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Post by tannerw_2010 » Tue Sep 09, 2008 1:32 am

Just tried that as well... I turned it down to 100 from 10000 power, and the only thing that happens is it gets dimmer...

MSUdom5
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Post by MSUdom5 » Tue Sep 09, 2008 2:23 am

I have no idea what's going on here. Could you try zipping and posting your scene?

tannerw_2010
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Post by tannerw_2010 » Tue Sep 09, 2008 3:35 am

yeah i will post the scene. This is what happened when I set my emmiters as a diffuse (completely turned them off) and the sun was all the way up.

Image
Yes this is with the sun ALL the way up.. :?

And here is the scene. Just so you know, in this scene i deleted everything that wasn't in the shot just to reduce rendering times .

http://www.mediafire.com/?azaahaaaaa2

MSUdom5
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Post by MSUdom5 » Tue Sep 09, 2008 3:51 am

I'll look at it this afternoon when I get back home from work and have access to Blender.

Another thing to check would be the position of your sunlamp. I don't use sunlight for lighting very often, so I could be wrong about this, but I believe that the position of the lamp tells Indigo what time of day it is. Based on this image, it seems the sunlamp is low, close to the horizon, telling Indigo that it's either early morning or evening where light levels from the sun are low.

tannerw_2010
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Post by tannerw_2010 » Tue Sep 09, 2008 8:03 am

I also tried rotating the position of the lamp to 12 o'clock and nothing changed...

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