Hello everybody,
is it posible to integrate a cubemap texture as uniform within a costum shader?
Thanks in advance for any help.
Johannes
Hi @Studio_Fluffy,
Thank you for your question! @ptrgags has a ton of experience with custom shaders and should be able to help you out 
Best,
Sam
Hi @Studio_Fluffy, unfortunately cubemap textures are not currently supported. This is a known issue, please see here: Make it easier to load textures and cubemaps · Issue #9741 · CesiumGS/cesium · GitHub
Thank your for your help
Best Johannes
Does ist make sense to bind the 6 textures of a cubemap as normal textures as a work around?
Best+
Johannes
Or could you tell me, what part of cesium classes i have to look at to implement cube map support by myself?
Best
Johannes
Hello Peter,
we are interested in the same issues, could you give us some tips, should we do the way described in the issue#9741
In which way is this only experimental - does it survive in the next versions ?
Regards
Rüdiger
Hi @Ruediger_Brand,
Indeed issue #9741 is the recommended approach. @Studio_Fluffy expressed interest in implementing this since here at Cesium our priority right now is 3D Tiles 1.1 related changes. You two might want to coordinate if you both need this feature.
In regards to it being experimental, I’ll say this:
- Custom shaders is definitely a feature we want to keep
- The API for the shaders has been a work-in-progress, so we want to leave it open for now in case we need to tweak the callback signature or the parameters to the
CustomShaderobject as we learn more about how it gets used. For example, one part of the design that I’ve been on the fence about is it exposes a lot of internal details. See how to manage what shader builtins are available in CustomShader? · Issue #10182 · CesiumGS/cesium · GitHub for my thoughts on that. - Furthermore, while
ModelExperimentalstill exists (eventually it will replaceModelonce we reach better feature parity, see 3D Tiles Next CesiumJS Roadmap · Issue #9520 · CesiumGS/cesium · GitHub), a lot of things are marked as experimental for now.
Best,
Peter
@ptrgags : Thank you for the tips, we have done some evaluations and think it looks good.
One more question to customShaders - in the moment the customShader is binded to a 3dTileSet.
Can I use a customShader with the shadowMap of the terrain/scene ?
Regards
Rüdiger
Hi @Ruediger_Brand,
Currently, CustomShader can only be attached to a Cesium3DTileset or a ModelExperimental, not terrain.
In the long-term, we actually want to change our terrain system to use 3D Tiles, in which case CustomShader would be usable since it’s the same code. However, we do not currently have a timeline for when this will be addressed.
Best,
Peter