"Bald Eagle" <cre### [at] netscapenet> wrote:
> "rodv92" <nomail@nomail> wrote:
>
> > So i will render the scene with ambient light only and media and nothing else
> > and the rest without media but with everything else, including light sources.
> > and then composite all the frames.
>
> I wonder if you could render that first part with a transparent background, and
> then use something like screen.inc and light groups to have that rendered media
> image visible, but not interacting much with the rest of the scene (use a
> separate light group with shadowless light source to illuminate it)
>
> Then you could eliminate a separate compositing process from your workflow.
>
> Haven't ever tried it, don't know if it will work or give you the image quality
> that you want - just thinking out loud.
>
> If the media needs to "shift" due to parallax, I think Rune had some sort of
> trick that might do what you need...
> The "illusion" include file.
> http://runevision.com/3d/include/
>
> I've never used it, so I may very well be mistaken about what it actually does.
> Or I'm thinking about someone else's 3d-faking technique entirely.

Hi, i managed to "damage control" the project by using no media interaction and
no media attenuation on lights.
Since my media is already so luminous, it wont be really obvious.
I will compensate the variations of lightsources induced on media (imagine a
lamp with a  light regulator) with an artefact : avariation of the emission
and/or extinction of the media (for scattering) along the change of lightsource
luminosity or something along these lines.

However, compositing may help in case of an unexpected slowdown situation.

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