Implement ray tracing with Shader Graph

To use ray-traced effects with Shader Graph, use the Raytracing Quality Keyword node. This node exchanges accuracy for speed for ray-traced effects. It's also useful to prevent compilation error due to unsupported nodes when using Path Tracing.

Add the Raytracing Quality Keyword node

The Raytracing Quality Keyword node is a Built-in Keyword node .

To add the Raytracing Quality Keyword node to the graph:

1. In the Blackboard, click plus (+).
2. Go to Keyword > Raytracing Quality. This creates the keyword and makes it visible on the Blackboard.

Use the Raytracing Quality keyword node

To use this keyword in the graph, you need to create a Keyword Node. To do this, drag the Raytracing Quality Keyword node from the Blackboard to the graph or open the Create Node Menu and search for Raytracing Quality .

Available Ports

Name	Direction	Type	Description
default	Input	Vector4	The value to use for the normal Shader Graph. This is the default path Unity uses to render this Shader Graph.
raytraced	Input	Vector4	The value to use for the fast Shader Graph to use with the ray-traced effects.
pathtraced	Input	Vector4	The value to use for the Shader Graph when the path tracer is enabled. This is useful to prevent compilation error due to unsupported nodes in path tracing.
output	Output	Vector4	Outputs is the value which will be selected based on the context this shader graph is used.