Webgpu_clipping is getting worse

[WREQI]

Description

Web GPU clipping requires creating a new group and adding objects to it, which introduces new objects and changes the tree like data structure of objects in the scene, making it no longer compatible with the clipping of old projects and reducing usability

Solution

Expectation: No need to create a new group, it will not damage the scene tree structure

Alternatives

use Material prop clippingPlanes?

Additional context

No response

[mrdoob]

making it no longer compatible with the clipping of old projects and reducing usability

Do you mind sharing more details about this?

[Mugen87]

Some context: The API has been changed on purpose since the previous approach in WebGLRenderer made it hard to implement hierarchical clipping which is actually often want in apps. By having ClippingGroup, it's easy to "encode" the clipping into the scene graph.

Defining global clipping on the renderer level was always problematic when doing multi-pass rendering since you have to toggle clipping properties depending on the renderer state which tends to be error prone.

With ClippingGroup, you should not loose any type of functionality. Instead you get more flexibility and an easier setup when using hierarchical clipping.

[WREQI]

As shown in the figure, there is a robot model with skeletal animation. If clipping is added to its body sub model in a new way, it will damage the structure. After moving to the group, various errors may occur in the size scaling of the sub model, and it may also cause the model animation to @mrdoob @Mugen87

Is it possible not to use add?

[Mugen87]

No it isn't.

What you see is the expected behavior since the transformation of the 3D object at that point is taken into account in the clipping group. It seems you have to pick another 3D object in the hierarchy or you just add the instance of ClippingGroup directly into the scene root.

Adding an instance of ClippingGroup to an existing 3D model should not damage its hierarchy or the overall transformation. It also has no affect on animations.