---
title: "PxrEnvGround"
canonical: "https://rmanwiki-27.pixar.com/space/REN27/542223428/PxrEnvGround"
format: markdown
---
When creating a turntable for look development, it's useful to render an object with an environment and ground for lighting and reflection.   
  
This pattern is intended to be used with a High Dynamic Range Image or HDRI, typically an OpenEXR file of a photographically captured environment that is also your light source using a [PxrDomeLight](https://renderman.atlassian.net/wiki/spaces/REN27/pages/542226975). It is then connected to your ground geometry material.

The placement controls such as Offset and Rotation are meant to allow you to match this with the final placement of your PxrDomeLight.

> ℹ️ This pattern is intended to be used in a look-development workflow with your asset at the scene origin/center to maintain the correct projection.

###   
Input Parameters

#### Filename

This is where to supply an HDRI texture as the ground. Note that details may become lost as you travel away from the origin.

#### Environment Radius

This changes the distance of the supplied projection, incorrect values will result in visible stretching.

#### Offset X

Shift the result in the X direction. Negative values shift the opposite direction.

#### Offset Z

Shift the result in the Y direction. Negative values shift the opposite direction.

#### Rotation

Rotate the result in degrees around the Y axis.

#### Filter Width

Can be used to blur the texture result.

### Output

#### ResultRGB

This is typically connected to the Diffuse color input of your material.

#### Result Presence

This is connected to the Presence parameter of your material.

#### ResultNG

This connects to a [PxrBumpMixer](https://renderman.atlassian.net/wiki/spaces/REN27/pages/542222881) (required) that is then connected to the Normal/Bump parameter of your material, usually the global bump if one exists.