HTrace WSGI in Ray-Traced Reflections

This module extends HTrace World Space Global Illumination (WSGI) with indirect lighting inside Unity HDRP's native ray-traced reflections. It is exclusive to Patreon.

Please keep in mind that this approach comes with trade-offs and may not be suitable for all projects.

Watch the overview on YouTube

Setup

1. Download the HTrace WSGI package containing the Reflection module through Patreon and install it in your project. A new Reflection Indirect Lighting foldout should appear in the HTrace UI.
2. Enable Unity's ray-traced reflections and set them to Performance mode.
3. Set Indirect Evaluation Method in the HTrace UI to either Tracing or Approximation.

None

Indirect Evaluation Method set to None

Tracing

Tracing with DLSS used as a denoiser

Approximation

Indirect Evaluation Method set to Approximation

INFO

Indirect lighting is visible only within the first bounce of ray-traced reflections. Recursive bounces are not currently supported. For multiple bounces, consider reflection fallbacks such as the sky or reflection probes.

Evaluation Modes

• Tracing Mode
• Approximation Mode