How to Fix a Visible Line Where Shadowmask Switches from Realtime to Baked Shadows

Distance Shadowmask uses realtime shadows up close and baked ones far away, with a switch at the shadow distance. If the two do not match, a line appears there. Pushing the distance out and matching softness hides it.

How to fix it

1. Push out the shadow distance

Raise the shadow distance in Quality settings so the realtime-to-baked switch happens beyond where the player typically sees the shadow detail.

2. Match realtime and baked softness

Tune cascade resolution and bake settings so realtime and shadowmask shadows have similar softness and density; a sharp-to-soft jump is what reads as a line.

3. Choose the right shadowmask mode

If the boundary is unavoidable, use Shadowmask (not Distance Shadowmask) so static shadows are always baked, trading some quality for no distance switch.

4. Add cascade blending

Enable cascade blending/fade so the realtime portion fades smoothly toward the baked region instead of ending abruptly at the distance limit.

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 Unity 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.