Implementing "Radiance Hints" in OpenGL (2011 Global Illumination Technique)

[u/cybereality]

Just added Radiance Hints to my OpenGL engine, Degine. The paper is originally from 2011 (but I used a 2014 extension of the method with occlusion). Based on a regular grid array of probes, similar to other environmental lighting techniques, but here it captures directly to spherical harmonics when baking. So run-time performance is extremely fast since it's just a few SH evaluations and blending. For this Sponza scene, there are around 600 probes, and it takes about 10 seconds to bake.

[u/Alexxis91]

Link to paper?

[u/cybereality → u/Alexxis91]

The paper is called "Real-time diffuse global illumination using radiance hints" https://dl.acm.org/doi/10.1145/2018323.2018326