Upcoming mesh and texture compression in glTF and 3D Tiles

[Patrick Cozzi]

Hi all,

Through Khronos, we have been working with the Google Draco team on their mesh compression, which will be an extension to glTF and 3D Tiles.  It is particularly well suited to Cesium since it is fast to decode and has varying quality/size options.  The spec is almost ready for ratification.  If you have any input, please chime in:

https://github.com/KhronosGroup/glTF/issues/1114

Through Khronos, we are also collaborating with Basis on universal texture compression, which is important to Cesium to drastically reduce the amount of memory used by imagery, photogrammetry models, and anything with large textures without requiring several platform-specific GPU compressed textures.  Please let me know if you want to be involved in this effort, Khronos membership is required.  For a bit more info, see:

https://twitter.com/sehurlburt/status/915647916672401408

Thanks,

Patrick
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twitter.com/pjcozzi

[Patrick Cozzi]

Hi all,

For more info and to get involved in the upcoming texture compression for glTF, 3D Tiles, and basically everything else, see

https://www.khronos.org/blog/call-for-participation-gltf-creating-a-compressed-texture-extension

This will be huge for Cesium and all of 3D geospatial.

Thanks,

Patrick

[MP]

Hi Patrick,

Any reference for compressing 3D tiles using Draco compression?

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MP

[Omar Shehata]

I believe the Cesium ion (http://cesium.com/ion) tiling pipeline uses Draco compression during tiling. You can also read a bit about the performance of all that here:

https://cesium.com/blog/2018/04/09/draco-compression/