How to Fix Ambient Occlusion Halos and Artifacts

AO halos and noise are radius, bias, and sampling problems. Tuning them gives clean contact shadows. Here is how.

How to fix it

1. Tune radius and bias

Too large a radius makes AO bleed into halos around objects; wrong bias causes self-occlusion artifacts. Tune both so AO darkens only genuine contact areas, not wide halos.

2. Reduce noise

AO can be noisy with few samples. Increase samples or apply the engine's AO denoise or blur so the result is smooth, without trading it for the over-blur that creates halos.

3. Limit intensity

Strong AO over-darkens and exaggerates artifacts. Keep the intensity subtle so it adds depth at contacts rather than drawing dark outlines around everything.

Catching the ones you can't reproduce

The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.

Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.

This is where a tool like Bugnet earns its place. Its SDK captures every error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.