This page gives information on the Background Render Element. 


Page Contents


Overview

The Background Render Element  includes just the background as set in the scene, with the rest of the image rendered as black. It stores an image of the texture used in the background behind geometry in a scene as seen from the camera. Geometry that blocks the background image renders as black.

This render element interprets a background texture as the background; other types of manually created backgrounds, such as a plane mapped with a texture set outside a window, are not interpreted to be the "background" for this render element.

 

 

 

UI Path: ||Shading viewport|| > Shader Tree > Add Layer button > V-Ray Render Elements > V-Ray Additional Outputs > Background

 

Parameters

This render element is enabled and controlled through the V-Ray Additional Outputs properties.

 

Enable Background – Enables the Render Element.

Name – Sets a custom name for the Background Render Element.

Apply Color Mapping – Applies the color mapping options specified in the Color mapping rollout of the V-Ray Main Render Settings.


Common Uses 

The Background Render Element is primarily used for layering the Beauty element (or combined render elements) on top of the background image. The Alpha Render Element can be used to create a matte for such a composite. 

 

 


Beauty Render Element without Background Render Element

 


Background Render Element

 


Alpha Render Element

 

 

 

 

 

 

 

Beauty element with Background Render Element

 


Beauty element with Background Render Element
and background colors tinted in composite

 

 


Notes

  • When the background is behind a transparent or semi-transparent material such as glass or clear plastic, make sure the Alpha channel is enabled for the material for all render elements; otherwise, the background will not be visible in the render element. For example, when using V-Ray Material for a glass material, set the Affect channels  parameter for both Reflection and Refraction to All channels to cause the background to appear in the Background Render Element behind the glass.