Early testing of the Cesium 1.33 release

Hi all,

Cesium 1.33 will be released on Monday, April 1, and we welcome early testing!

This release has new depth test settings for billboards, labels, and points, depth-fail polyline materials, upgraded FXAA, and will hopefully also have polyline dash materials (see #5159).

Test it out:

  • zip release
  • npm package
  • or just build the master branch locally

Please submit issues if you find anything.