This page provides information on the Brute Force GI option.
Overview
This rollout controls the settings for Brute Force GI when it is selected as an engine for the secondary diffuse bounces in the GI rollout.
Parameters
Depth – Controls the number of light bounces that are computed when Brute Force is used as the engine.
Adaptivity Prepass – The adaptivity prepass computes necessary data for algorithms like path guiding, adaptive lights, adaptive dome light, and auto exposure, similarly to the Light cache method. These features rely on extra training data obtained during the prepasses. Therefore, this process is necessary for them to function properly when used alongside the Brute force Global Illumination (GI) engine. Note that this option is not supported with V-Ray GPU.
