Hey Ron,

you can easily do it with AtomKraft, even with the free version you can use
SH and it is pretty fast :)

- Lay down an AtomEnvironment
- Plug in your HDRI (if not latlong you can use SphericalTransform)
- Set mode to "Accurate" for SH (spherical harmonics). Just FYI the
"Approximate" stands for bent normals.

If you also need real shadowing from the environment you can:

- turn AENV shadows from "off" to "simple" to also have proper shadow from
the HDRI environment (when using shadows you should use a proper sample
count)

If you instead just need plain environment occlusion :

- connect another AENV with no texture plugged (default is white
environment) and
- set shadows to simple, and samples accordingly.


Note that:

* The relative AOVs are properly filled.
* There are many other combinations (plain environment reflections,
raytraced reflection of the environment according to the BRDF, multiple
textures for diffuse & specular...) that you can achieve, we are planning a
simplification of AENV along with presets as it is a bit overcomplicated
for a comp artist.

Beers,

P.





On Wed, May 30, 2012 at 2:04 PM, Ron Ganbar <[email protected]> wrote:

> Hi Guys,
> does anyone do HDRI based Lighting in Nuke? How can one do that, I wonder?
> I remember something from the 2009 Foundry Masterclass, but it wasn't
> straight forward by any stretch of the imagination...
>
> Thanks,
> Ron Ganbar
> email: [email protected]
> tel: +44 (0)7968 007 309 [UK]
>      +972 (0)54 255 9765 [Israel]
> url: http://ronganbar.wordpress.com/
>
>
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> --
> paolo berto durante
> space cowboy
> /*jupiter jazz*/ visual research — hong kong
> <http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users>
> http://jupiter-jazz.com
>
>
>
>
>
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