This section is available only if you have chosen Brute force GI as either the primary or the secondary GI engine.

The brute force method for computing global illumination recomputes the GI values for every single shaded point separately and independently from other points. While very slow, this method is very accurate, especially if you have many small details in the scene.

To speed up brute force GI, you can use a faster method (the Photon map or the Light cache) for approximating secondary GI bounces, while using the brute force method for the primary bounces or you can use the Brute force engine as the secondary bounce engine to combine and refine a Irradiance map GI solution.

Parameters