Indigo Renderer Forum

Here's a little test i did with rendering the Light-passes in different "Frames".

For that I used the Blendigo Export-Script and the Export animation Feature for automatic rendering.

Multilight is a intresting Feature for Lightsetupping, because if you've rendert your Lightpasses, it's very handy to configure the Lights if you want to and you haven't to render everytime a new test to see if the Lightconfiguration is okay !

Can you explain to all more details...

my first question is how many time to render all aminamtion?
Is the same time for make one frame?

Well done! This looks pretty useful... I guess the only drawback is the extra time waiting for the separate renders.
One question: How did you combine the separate images? Was it some sort of "screen" or "add" or what ..?

You can combine the images with "Sceen", I used Gimp for that.

A good explenation of the method could seen here:

Indigo and Multilights

Cute.. but physically incorrect, as I've written about before.

Any way to make it correct, then?

Ono,
Could you explain again (or link to your previous explanation) of why this is physically incorrect? I've been looking through the forums, trying to find this but couldn't :(
I thought, that, as light properties are additive, and light waves don't interfere (at least, not on the scale we're talking about), doing a simple "add" function would be physically correct. Is the problem mainly re: tonemapping before/after the add?

walter wrote:Ono,
Could you explain again (or link to your previous explanation) of why this is physically incorrect? I've been looking through the forums, trying to find this but couldn't
I thought, that, as light properties are additive, and light waves don't interfere (at least, not on the scale we're talking about), doing a simple "add" function would be physically correct. Is the problem mainly re: tonemapping before/after the add?

Yup.
The correct approach is to form a linear combination of the *un tone-mapped* image buffers, *then* apply the non-linear tonemapping operation.

Applying the non-linear tonemapping operation first (i.e. mixing the PNGs) is incorrect.

But, Indigo can save un-tonemapped images .. so, that's not too hard at all ..!

walter wrote:But, Indigo can save un-tonemapped images .. so, that's not too hard at all ..!

Sure... if your image editor can mix EXRs

Right :D
I might be wrong, because I've never used it before, but it looks like Cinepaint can do this...
[edit] This might also be nice functionality to have in violet.

Yup, would be awesome to have in Violet.
Unfortunately, the required GUI code is non-trivial

Hmmm....
So, a good coder needs to do that

exporting exrs also would make the custom HDRis better

low prior request, that already was made, I think:
A panorama camera (360°, cylindrical or better spherical)

Yup, would be awesome to have in Violet.
Unfortunately, the required GUI code is non-trivial Smile

Yes !!
that would be awesome. Hope one Day Violett support that feature, then we'll catch Maxwell with his "magic" Multilight function.


Here is a Gimp file with several lightsetups to try the IndigoMultilight-Mixing feature.

this was my topic
some long time ago (November 06), read/see it here:
http://www.indigorenderer.com/joomla/fo ... .php?t=739

regards zuegs