I am curious to know the likelihood of a GI cache collision occurring from scene to scene. Let’s say I have allowed the max GI cache (100 GB) and I light bake a scene and store the GI cache in a folder. Then I open up the next scene, and light bake that scene using the same folder. Do cache collisions occur? Or is the scene factored into the cache lookup value?
Because I am wondering if it is worth creating separate folders for each scene for light baking, because disk space is so cheap. But if no cache collisions would occur, then it is not worth creating separate folders.
Hash collisions should not be a problem. If two different scenes result in the same hash it is because all the inputs to GI calculations are the same and therefore the same cached output can be used without problems.
Are you hitting the 100Gb max size and find that it is too low?
OK, thanks for the explanation. It sounds like it isn’t worth creating separate cache locations per scene. With compressed cache I am only using up about 2 GB per scene, so the 100GB limit is not an issue for me.
