Custom Layer cube is clipped on large zoom

[korywka]

mapbox-gl-js version: 0.52.0

browser: Chrome OSX

Steps to Trigger Behavior

1. Zoom map
2. Move up

Link to Demonstration

Use example from debug for three.js without buildings layer:

https://github.com/mapbox/mapbox-gl-js/blob/master/debug/threejs.html

https://bravecow.github.io/mapbox-3d/test#16.5/43.65785/-79.390382/20/60

Expected Behavior

Moving map doesn't affect cube clipping.

Actual Behavior

Moving map affects cube clipping.

[ansis]

It looks like this is happening because the cube is large enough that it extends below the surface of the map. Possible changes we can make to fix this:

• move the far depth plane so that this renders as expected
• clip everything below the surface of the map
• leave drawing things below the surface as undefined behavior

@Bravecow which behavior would you expect here?

[korywka]

Can you explain please why it is going below surface on large zoom if we set translate as [0.279471, 0.364935, 0]? It looks like cube not following map pitch.

[shayke]

Is this somehow related to #7573 ?
How can one scale a custom layer object from z0 to z20 so it still looks the same size?

[korywka]

Maybe related to: visgl/luma.gl#1211

[spencerthayer]

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