How to make background visible by refraction Tweet

[iequezada]

Hello,

Is there any way for refractive (transmissive) materials to refract a background object?

I'm attaching two different images, one with the desired result and another with what I get with octane render (which refracts octane's daylight object)

Desired result with c4d's standard renderer (you can see buildings refracted):

Desired result with c4d's standard renderer

Octane render refracting daylight object instead of background:

Octane render refracting daylight object instead of background

I'm on Octane render 2020.1.2 and C4D R21.
I've tried both using a native material for the background and an octane material.

[bepeg4d]

Hi,
add another Texture Environment node and change the type to Visible, instead or Primary, in this way you can use it for Backplate, Reflections, and/or Refractions:
http://www.aoktar.com/octane/OctaneDaylight.html
ciao Beppe

[iequezada]

Hi,
add another Texture Environment node and change the type to Visible, instead or Primary, in this way you can use it for Backplate, Reflections, and/or Refractions:
http://www.aoktar.com/octane/OctaneDaylight.html
ciao Beppe

Thank you Beppe, I did that and it allowed the material to refract the texture environment node behind it, however using the texture enviroment node, my backplate projects into a sphere, distorting it, What I'm looking for is a solution where my backplate projects to a flat plane, with "frontal" projection and not reacting to camera movement, such as with c4d's background object. Is there anyway to achieve this ?

This is what I'm getting with your advice:

distorted

[bepeg4d]

Try with the following cameraMap_environment.osl projection node:
viewtopic.php?f=21&t=65575&p=357327&hilit=osl+projection#p331877
ciao Beppe