2.5 Indirect Lightning feature noob question

Support Compositing and Post Processing
#1

Hi everyone, and sorry for my english. I googled already about that question with no results so here i go:

I´m testing (I think everyone is testing stuff since 2.50 appeared :o ) Indirect Lightning and trying to illuminate a scene only with light-emitter objects and no lamps and the renders look the same as if I´d put an hemi lamp (no “shadows”). The light goes thru the cylinder.
http://i295.photobucket.com/albums/mm126/quelcius/Untitled-1-1.jpg
http://i295.photobucket.com/albums/mm126/quelcius/suz.jpg

I´m using Blender Foundation´s 2.5 Alpha 1 build 27017 from Graphicall, and Blender Internal of course. All World default settings except “Indirect Lightning” switched on.

The question is “is that normal?” I mean, was I wrong if I expected some AO style light/“shadow” balance?

Thanks in advance.:slight_smile:

#2

Uh…ok… I found out: it is about the Falloff option+ strengh.

#3

Can you update this thread with the solution as a screen grab and render so that the values make more sense?

#4

Thanks for replying!

The fact is that I found no solution.

Playing with falloff and strengh just avoids a little that effect of “everything illuminated and no shadows” which looks as if you used an hemi light instead of the “indirect lightning” option. Falloff+strengh “limits” the distance to which the light from the light-emitter objects reaches but doesn´t cast “shadows” (I put shadows under quotes to difference it from the shadows created from Lamps) just as Ambient Occlusion does.

By now I´m playing with Yafaray with good results.

#5

Try to use another type of object (not a 2D one like the circle) and move your illuminating object a bit up. You can also turn up low emit values for your other objects (in reality almost every object bounces the light and becomes a light itself). Repeat: Use low values. Add some colors and play with your settings.

#6

Thanks for the help!
I´ll try tweaking stuff and back to explein my progresses.

#7

I’m having the same problem. When I use indirect lighting in 2.5, I can’t get shadows to display properly. I think this has something to do with the number of render iterations, but I can’t find this option in the render, world, or material options. Any help is greatly appreciated.

#8

Indirect lights do not cast shadows in 2.5.

#9

What he said. And you got to place a lightsource with “shadow only” at your emiter object to cast shadows.
Hacky, but fast, especially if you use a spotlight with buffershadows.

#10

They used to in a few render branch builds a while ago, but that functionality has now disappeared i think.