Screen Space Reflections

Screen Space Reflection (SSR) is a technique for reusing screen space data to calculate reflections. Since it’s a screen space effect, you won’t be able to see objects in reflections if they’re not on the screen.

../_images/no_ssr.png

SSR is disabled

../_images/ssr.png

SSR is enabled

../_images/ssr_cutoff.png

Reflection is cutoff

You can control the quality of SSR by changing Samples per Quad and Max Traversal Iterations. The more, the better, and also slower.

Additionally, you can adjust Roughness Threshold for SSR. If material’s roughness is higher than the threshold, SSR won’t be applied.