Bright environment	Dark environment

This shader reflects the diffuse light of the environment, captured by the external cameras of Apple Vision Pro, onto the surface.

The above images were captured using the visionOS Simulator, where we prepared a bright room and a dark room. The same material is applied to the central objects, but you can see that the surface brightness changes depending on the brightness of the room.

Internally, this shader uses the PolySpatial EnvironmentRadiance node of Shader Graph.

• Unity 2022.3.18 or later
• visionOS Build Support
• Universal Render Pipeline URP
• PolySpatial 1.1.6 or later

# Install openupm-cli
npm install -g openupm-cli

# Go to your unity project directory
cd YOUR_UNITY_PROJECT_DIR

# Install package:
openupm add com.segur.poly-spatial-environment-diffuse-shader

• Create or Select a material.
• In the Shader field, choose Segur/PolySpatial/EnvironmentDiffuse.
• Set the base color in BaseColor.
• Assign a texture to BaseMap.
• Set the EmissionColor and EmissionMap as needed.

This shader is compatible with VRM 1.0. By specifying EnvironmentDiffuseMaterialDescriptorGenerator as the MaterialDescriptorGenerator when loading a VRM file, this shader will be applied. For more details, please refer to the sample scene.

Here are some sample scenes.

This is a sample scene where this shader is simply applied to a sphere, a cube, and a cylinder.

This is a sample scene that loads a VRM file.

• Install following packages:
  • com.vrmc.gltf
  • com.vrmc.vrm
  • com.vrmc.vrmshaders
• Specify the URL of your preferred VRM file in the Url field of the VrmLoader within the scene.
• Run the scene, then the VRM will be displayed with this shader applied.