John Beard f7aded00c7 Pcbnew: draw clearance lines on their own GAL layers
This tidies up quite a performance hit on layer change
caused by repainting vias, pads and tracks for their
clearances.

Instead, on a layer change, just disable any old clearance
layer and enable the new one (if any).

Fixes: https://gitlab.com/kicad/code/kicad/-/issues/19404
2024-12-31 00:53:10 +08:00
..
2021-10-03 19:42:29 +01:00
2024-11-21 13:18:36 -08:00