The Precompute Process

Checked with version: 5.1

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Difficulty: Beginner

In Unity, precomputed lighting is calculated in the background - either as an automatic process, or it is initiated manually. In either case, it is possible to continue working in the editor while these processes run behind-the-scenes.

When the precompute process is running, a blue progress bar will appear in the bottom right of the Editor. There are different stages which need to be completed depending on whether Baked GI or Precomputed Realtime GI is enabled. Information on the current process is shown on-top of the progress bar.

Progress bar showing the current state of Unity’s precompute.

In the example above, we can see that we are at task 5 of 11 which is, ‘Clustering’ and there are 108 jobs remaining before that task is complete and the precompute moves on to task 6. The various stages are listed below: