RTGI Shader Adds Image Based Lighting, Extended Ray Length Multiplier Dec 30, 2020 04:11 EST Pascal Gilcher, the creator of the RTGI shader we've often covered here on Wccftech, has released a new version (0.19) that adds image-based lighting and an extended ray length multiplier. The two features combined should provide quite the image quality boost, as demonstrated in the image below. Gilcher also explained in his Discord channel how these new RTGI shader features work exactly. The first one is the Extended Ray Length Multiplier, controlled via a new UI slider. The way things worked before, you'd have to choose between small details or global illumination. If your radius is low, you have lighting around small details in the foreground, but in the background, you end up with shading that's just outlines of object edges, or you opt for real, global illumination and all the tiny details of the 3D models are gone. No more! The new setting allows you to increase the ray length with distance, so farther away areas now can have larger rays. The first 3 example pictures were taken with only 3 steps per ray.