How to animate material of primitives?

CesiumJS
1

I have a MaterialProperty for entity:

MyMaterialProperty.prototype.getValue = function(time, result) {
    if (!Cesium.defined(result)) {
        result = {};
    }
    result.image = this.url;
    result.time = ((performance.now() - this._time) % this.duration) / this.duration;
    return result;
}
// ...

czm_material czm_getMaterial(czm_materialInput materialInput)\n\
      {\n\
            czm_material material = czm_getDefaultMaterial(materialInput);\n\
            vec2 st = materialInput.st;\n\
            vec4 colorImage = texture2D(image, vec2(fract(st.s - time), st.t));\n\
            material.alpha = colorImage.a;\n\
            material.diffuse = colorImage.rgb * 1.5 ;\n\
            return material;\n\
    }

The key is result.time = ((performance.now() - this._time) % this.duration) / this.duration which make it animation.
But now I have a large GeoJSON dataset that is significantly impacting the performance of the entity. Therefore, I would like to use Primitives to address this issue.

      appearance: new Cesium.PolylineMaterialAppearance({
        material: new Cesium.Material({
          fabric: {
            uniforms: {
              image: imgUrl,
              transparent: true
            },
            source: `czm_material czm_getMaterial(czm_materialInput materialInput)\n\
              {\n\
                czm_material material = czm_getDefaultMaterial(materialInput);\n\
                vec2 st = materialInput.st;\n\
                float time = mod(czm_frameNumber / 60.0, 3000.0) / 3000.0;\n\
                vec4 colorImage = texture2D(image, vec2(fract(st.s - time), st.t));\n\
                material.alpha = colorImage.a;\n\
                material.diffuse = colorImage.rgb * 1.5 ;\n\
                return material;\n\
              }`
          }
        })
      })

Without property, I use float time = mod(czm_frameNumber / 60.0, 3000.0) / 3000.0; to make it animation. But it do not work :smiling_face_with_tear:.