Screen Space Global Illumination (SSGI) provides an enhanced lighting calculation method for the Eevee render engine. The native version is distributed as a custom Blender build that introduces a secondary layer for diffuse reflections within a modified screen space reflections shader. Settings are consolidated under Screen Space Raytracing in the Eevee render properties. A legacy add-on version is also included, which converts Diffuse and Principled BSDF nodes into node groups to approximate the diffuse component for screen space reflections, though this method is deprecated in favor of the custom build implementation.