glTF model clippingPlanes removeall error

[changqingom]

Cesium version : 1.68

chrome version : 80.0.3987.149

when excute glTFModel.clippingPlanes.removeAll() i got a rendering error : gltf_clippingPlanes UniformSampler value is undefined

I've tried other models . I think the multi Bounding Volume model has this problem.

model link : https://sketchfab.com/3d-models/white-silver-green-residence-ec516ba32f03403f97954472c5d4b2cf#download

window.viewer = new Cesium.Viewer("cesiumContainer", {
  // terrainProvider: createWorldTerrain()
  imageryProvider: false,
  animation: false, 
  baseLayerPicker: false, 
  geocoder: false, 
  timeline: false, 
  sceneModePicker: false, 
  navigationHelpButton: false,
  infoBox: false, 
  fullscreenButton: false, 
  homeButton: false, 
  selectionIndicator: false, 
  navigationInstructionsInitiallyVisible: false,
  shouldAnimate: true,
});

const options = {
  id: "example-model",
  // url: '/model/Duck.glb',
  // scale:400000,
  /*-------------------------------------------------------- */
  url: "/model/white_silver_green_residence/scene.gltf",
  scale: 400,
  position: [108.947048, 34.259415],
};

window.model = Cesium.Model.fromGltf({
  modelMatrix: Cesium.Transforms.headingPitchRollToFixedFrame(
    Cesium.Cartesian3.fromDegrees.call(null, ...options.position),
    new Cesium.HeadingPitchRoll(
      Cesium.Math.toRadians(0),
      Cesium.Math.toRadians(0),
      Cesium.Math.toRadians(0)
    )
  ),
  ...options,
  url: options.url,
  clippingPlanes: new Cesium.ClippingPlaneCollection({
    edgeWidth: 1,
    planes: [new Cesium.ClippingPlane(new Cesium.Cartesian3(-1, 0, 0), 0)],
  }),
});

viewer.scene.primitives.add(model);

viewer.camera.setView({
  destination: new Cesium.Cartesian3(
    -1953829.2409311095,
    6618724.811636659,
    3227893.906284791
  ),
  orientation: {
    heading: 0.24165191356149585,
    pitch: -0.9933975711287646,
    roll: 6.283006645076183,
  },
});

[OmarShehata]

There does seem to be something about this model that causes the renderer to be in an invalid state when the clipping plane is removed. Running it myself I get a different stack trace sometimes:

TypeError: Cannot read property '6' of undefined
TypeError: Cannot read property '6' of undefined
    at regenerateShaders (http://localhost:8080/Source/Scene/Model.js:4981:49)
    at Model.update (http://localhost:8080/Source/Scene/Model.js:4835:17)
    at PrimitiveCollection.update (http://localhost:8080/Source/Scene/PrimitiveCollection.js:374:27)
    at updateAndRenderPrimitives (http://localhost:8080/Source/Scene/Scene.js:3010:27)
    at executeCommandsInViewport (http://localhost:8080/Source/Scene/Scene.js:2836:13)
    at Scene.updateAndExecuteCommands (http://localhost:8080/Source/Scene/Scene.js:2644:13)
    at render (http://localhost:8080/Source/Scene/Scene.js:3319:15)
    at tryAndCatchError (http://localhost:8080/Source/Scene/Scene.js:3338:13)
    at Scene.render (http://localhost:8080/Source/Scene/Scene.js:3413:13)
    at CesiumWidget.render (http://localhost:8080/Source/Widgets/CesiumWidget/CesiumWidget.js:704:25)

[prasuncct]

I think it is related. There is a list of uniforms out of which there is one UniformSampler named "model_clipping_planes" with value as undefined.

[lilleyse]

@prasuncct or @changqingom could you check if this is fixed for you in the latest release CesiumJS 1.97? We refactored the model loading code and this may have been fixed.

[prasuncct]

@lilleyse I am not loading the gltfmodel but the pointcloud (las). It does not seem to be fixed yet.

[lilleyse]

Point clouds and glTF models now use the same Model class under the hood so the behavior should be similar.

Would you be able to put together a sandcastle that demonstrates the problem?

[jinjun1994]

Point clouds and glTF models now use the same Model class under the hood so the behavior should be similar.

Would you be able to put together a sandcastle that demonstrates the problem?

@lilleyse Can you see this sandcastle? Click the removeAll button twice , all types fail

Hello World - Cesium Sandcastle

[lilleyse]

This could be related to https://github.com/CesiumGS/cesium/issues/10811. CC @j9liu