Bug report #20691

3D without elevation layer renders badly

Added by Klas Karlsson almost 2 years ago.

Status:Open
Priority:Normal
Assignee:-
Category:3D
Affected QGIS version:3.4.2 Regression?:No
Operating System:Ubuntu 18.04 Easy fix?:No
Pull Request or Patch supplied:No Resolution:
Crashes QGIS or corrupts data:No Copied to github as #:28511

Description

If I don't have an elevation layer to generate the terrain QGIS should apply a flat terrain model so I can render 3D objects from vector layers.
It does render, but pan, zoom and orbit is "jumpy" and unpredictable. Even the simplest models renders poorly (attached file).

As soon as a terrain layer is applied as elevation source, all issues are resolved.

Skärmbild från 2018-12-01 14-24-41.png (278 KB) Klas Karlsson, 2018-12-01 02:24 PM

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