Indigo MultilightTest

[Sebastian]

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 !

[tizxx]

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?

[walter]

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 ..?

[Sebastian]

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

A good explenation of the method could seen here:

Indigo and Multilights

[OnoSendai]

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

[Kram1032]

Any way to make it correct, then?

[walter]

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?

[OnoSendai]

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.

[walter]

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

[OnoSendai]

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

Sure... if your image editor can mix EXRs

[walter]

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.

[OnoSendai]

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

[Kram1032]

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)

[Sebastian]

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.

[zuegs]

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