Free 'link': Rtgi

Screen Space Global Illumination (SSGI) shader included in the qUINT_SSGI suite. It’s not ray traced, but it fakes light bounces incredibly well at zero performance cost.

If you are making renders, not playing games, Blender is completely free, open source, and its Cycles renderer features full, true Ray-Traced Global Illumination. rtgi free

The introduction of RTGI has revolutionized the way lighting is approached in game development. By leveraging advanced algorithms and the increasing power of modern GPUs (Graphics Processing Units), RTGI enables developers to create environments with realistic lighting that adapts in real-time to changes in the game world. Screen Space Global Illumination (SSGI) shader included in