Inconsistencies in CustomLayerHost render(parameters:mtlCommandBuffer:mtlRenderPassDescriptor) calls

[Cal-um]

Environment

• Xcode version:12.5.1
• iOS version:14.5
• Devices affected: sims + device
• Maps SDK Version: v10.0.0-rc.2

Observed behavior and steps to reproduce

CustomLayerHost Render delegate method is called continuously after double tap zooming.

• Open CustomLayerExample.swift and breakpoint in the render method (e.g. line 105) or print something on this line.
• Run and open custom layer example
• drag map and observe render calls when dragging and stopping when dragging is finished.
• now double tap to zoom and observe render calls never end after animation is finished.

Expected behavior

Im not sure what the expected behavior should be. Render calls 60ps or only when it needs to.

I discovered this trying to make a metal node animate and noticed it only works when after double tap zooming. Is there a way to control the frames to make it render continuously as it does when double tapping as above? e.g. control the render by a displayLink?

[macdrevx]

Possible duplicate of #469. @Cal-um we've just released v10.0.0-rc.3 — could you retest on that version?

[Cal-um]

Checked and all good now.

Do you know of way to control the number of renders when the map is idle? I need to control it to make animation work in the metal custom layer.

[Cal-um]

@macdrevx fwiw I found a solution and added a feature request #514