Oh, please, please @hpinkos add support for this soon! I noticed this problem with a kml data source that has a GroundOverlay element and the image would just not clamp to the ground. I thought I was doing something wrong but then I ran across this thread in the forum.

Any estimates on when do you guys plan to support images clamped to ground?

Hi @jimmyangel. Based on the amount of effort that needs to be done to implement this, I don't think it's high enough priority for us to justify the time right now. Our current focus is on finishing 3D tiles. However, if a number of other users are asking for this we will look into it sooner.

@hpinkos oh, bummer. In the mean time, can you suggest any kind of workaround for this issue?

I would say this is pretty critical for people coming from Google Earth to Cesium. Probably a show stopper for them.

I labeled this priority as we do agree it is important and it may get done as part of the vector tile work for 3D Tiles, but it would be hard to break stride at the momentum to focus on just this.

I would love to see groundprimitive walls and polylines!

There's a start to this in the ground-primitive-tex-coords branch.

Requested on the forum: https://groups.google.com/forum/?hl=en#!topic/cesium-dev/Axk7LMMOD8Q

Requested again on the forum: https://groups.google.com/forum/#!topic/cesium-dev/TyFcn8m1Hb0

Request on the forum: https://groups.google.com/forum/#!topic/cesium-dev/BsNCUQzpxCE

We would love to see this one get fixed -- specifically ground overlays in the KML datasource.

@jburr-nc We have some initial work by @likangning93 being done in this branch: https://github.com/likangning93/cesium/tree/worldFromTerrainDepth

We'll ping this issue when we have some more progress.

Coming soon to a Cesium near you:

Congratulations on closing the issue! I found these Cesium forum links in the comments above:

https://groups.google.com/forum/?hl=en#!topic/cesium-dev/x3sYLgIr8Mc
https://groups.google.com/forum/#!topic/cesium-dev/x3sYLgIr8Mc
https://groups.google.com/forum/?hl=en#!topic/cesium-dev/Axk7LMMOD8Q
https://groups.google.com/forum/#!topic/cesium-dev/TyFcn8m1Hb0
https://groups.google.com/forum/#!topic/cesium-dev/BsNCUQzpxCE

If this issue affects any of these threads, please post a comment like the following:

The issue at #5025 has just been closed and may resolve your issue. Look for the change in the next stable release of Cesium or get it now in the master branch on GitHub https://github.com/AnalyticalGraphicsInc/cesium.

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@jimmyangel @jburr-nc We're happy to say this has finally been implemented and will be available in Cesium 1.46 on June 1st!