OTOY Forums

Hello , can anyone tell me if in octane is possible to have an landscape image at the background and sunlight at the same time ?
Thanks

If you mean IBL, then no. But you can possibly stick a background to a plane and render it together with the scene, while using sunlight for illumination.

nice idea but i will still going to get some shadows from the plane that i'll use for my background picture. ???

The plane will cast shadows, right, but it all depends from where the light is coming and how big is the plane... it's more of a hack, in some scenes it's possible to do in others not.

I've thought about this too, and came to the conclusion that the best way is to render a scene with daylight settings (real sun) and premultiplied alpha and composite the background sky in photoshop/GIMP or using a nodes compositor.

For animations, render two animations, one with the sky background and the other with geometry and real sun and blend with a compositor (like blender's node compositor).

This way you get the realistic exterior lighting and a properly animated view of the sky image. You can also use colour correction on either image/animation to match them to look natural together. This is particularly important as the various film responses in Octane vary in colour response, and the chances that it will work well with your sky image/texture are slim.

Regards,

Rob O