yesss so excited for this!

This is ready for 👁 , @jfirebaugh @mourner @lbud

Is there a defined z-order for circles within a layer? It didn't matter before because there was no way to visually distinguish the order. But now there is.

Is there a defined z-order for circles within a layer? It didn't matter before because there was no way to visually distinguish the order. But now there is.

We render circles, like other non-symbol layers, in the order specified by the source. geojson and vector sources provide an ordered set of features.

Because ordering is more important in symbol layers, we sort them by "y coordinate" then "x coordinate." This would be possible to do for circles layers.

It is possible to visually distinguish the order of patterned fills but I'm not aware of any ordering guarantees for that layer type.

Updated, squashed, and ready to 🚢 on 🍵 .