Precomputed Realtime GI / Dynamic APV
The following is intended for informational purposes only, and may not be incorporated into any contract. No purchasing decisions should be made based on the following materials. Unity is not committing to deliver any functionality, features or code. The development, timing and release of all products, functionality and features are at the sole discretion of Unity, and are subject to change.
If you have accepted to use functional cookies and logged in using your Unity ID at the top right of the page, then sharing feedback is as simple as clicking a card below, selecting a topic’s importance, adding your point of view, and submitting. If you prefer not to accept functional cookies or log in, you will be prompted to enter an email address and validate it, so we know how to reach out when the topic evolves. For more information read the Feedback and privacy terms.
Summary
Unity already provides creators with realtime global illumination solutions through HDRP, like ray traced global illumination (RTGI) and screen space global illumination (SSGI). However, while these fulfill some of our creators’ use cases for achieving high quality lighting in their virtual environments, these solutions require high-end devices to run efficiently, so they don’t scale well across platforms.
Use Case / Intended Outcome
With “Precomputed Realtime Global Illumination” we provide creators with a realtime global illumination solution that scales across a wider range of platforms than RTGI or SSGI. This “Precomputed Realtime Global Illumination” solution is based on pre-baked light probe data, which dynamically updates the indirect lighting on probe-lit objects at runtime, and enables creators to author, build and run realtime global illumination from dynamic lights off static contributors, like walls, ceilings, terrain, and static objects.