Add existing to tracked

node_modules/@cesium/engine/Source/Scene/Model/CustomShaderTranslucencyMode.js

@@ -0,0 +1,39 @@
+// @ts-check
+
+/**
+ * An enum for controling how {@link CustomShader} handles translucency compared with the original
+ * primitive.
+ *
+ * @enum {number}
+ *
+ * @experimental This feature is using part of the 3D Tiles spec that is not final and is subject to change without Cesium's standard deprecation policy.
+ */
+const CustomShaderTranslucencyMode = {
+  /**
+   * Inherit translucency settings from the primitive's material. If the primitive used a
+   * translucent material, the custom shader will also be considered translucent. If the primitive
+   * used an opaque material, the custom shader will be considered opaque.
+   *
+   * @type {number}
+   * @constant
+   */
+  INHERIT: 0,
+  /**
+   * Force the primitive to render the primitive as opaque, ignoring any material settings.
+   *
+   * @type {number}
+   * @constant
+   */
+  OPAQUE: 1,
+  /**
+   * Force the primitive to render the primitive as translucent, ignoring any material settings.
+   *
+   * @type {number}
+   * @constant
+   */
+  TRANSLUCENT: 2,
+};
+
+Object.freeze(CustomShaderTranslucencyMode);
+
+export default CustomShaderTranslucencyMode;