Cesium primitive outline extension

Hi @Marco13 ,
My apologies for not being clear enough. Thanks for elaborating on it.
My goal is to show the edges and the triangle surface.
Therefore, if my understanding is correct, wireframe only shows the edges excluding the surfaces, which is not my case.

However, if we can visualize the surface at the same time showing with the edges that is being visualized by the wireframe, my goal is achieved.

Based on my research, the debugWireframe property of the Model.fromGltfAsync function seems to be one that can make the wireframe enable for debug purpose.
https://cesium.com/learn/ion-sdk/ref-doc/Model.html#.fromGltfAsync

Furthermore, the debugWireframe is also unstable referred to the post in 2018.

How do you the “wireframe” rendering while showing the solid surface as well?