Add existing to tracked

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

@@ -0,0 +1,170 @@
+import Check from "../../Core/Check.js";
+import clone from "../../Core/clone.js";
+
+/**
+ * A model is made up of one or more nodes in the scene graph. Some details
+ * such as instancing are computed on a per-node basis. This class provides
+ * a place to store such details. It also inherits some properties from
+ * the model render resources.
+ *
+ * @constructor
+ *
+ * @param {ModelRenderResources} modelRenderResources The model resources to inherit
+ * @param {ModelRuntimeNode} runtimeNode The in-memory representation of the scene graph node.
+ *
+ * @private
+ */
+function NodeRenderResources(modelRenderResources, runtimeNode) {
+  //>>includeStart('debug', pragmas.debug);
+  Check.typeOf.object("modelRenderResources", modelRenderResources);
+  Check.typeOf.object("runtimeNode", runtimeNode);
+  //>>includeEnd('debug');
+
+  // Properties inherited from the ModelRenderResources.
+  /**
+   * A reference to the model. Inherited from the model render resources.
+   *
+   * @type {Model}
+   * @readonly
+   *
+   * @private
+   */
+  this.model = modelRenderResources.model;
+  /**
+   * An object used to build a shader incrementally. This is cloned from the
+   * model render resources because each node can compute a different shader.
+   *
+   * @type {ShaderBuilder}
+   * @readonly
+   *
+   * @private
+   */
+  this.shaderBuilder = modelRenderResources.shaderBuilder.clone();
+
+  /**
+   * A dictionary mapping uniform name to functions that return the uniform
+   * values. Inherited from the model render resources.
+   *
+   * @type {Object<string, Function>}
+   * @readonly
+   *
+   * @private
+   */
+  this.uniformMap = clone(modelRenderResources.uniformMap);
+
+  /**
+   * Options for configuring the alpha stage such as pass and alpha cutoff.
+   * Inherited from the model render resources.
+   *
+   * @type {ModelAlphaOptions}
+   * @readonly
+   *
+   * @private
+   */
+  this.alphaOptions = clone(modelRenderResources.alphaOptions);
+
+  /**
+   * An object storing options for creating a {@link RenderState}.
+   * The pipeline stages simply set the options, the render state is created
+   * when the {@link DrawCommand} is constructed. Inherited from the model
+   * render resources.
+   *
+   * @type {object}
+   * @readonly
+   *
+   * @private
+   */
+  this.renderStateOptions = clone(
+    modelRenderResources.renderStateOptions,
+    true,
+  );
+
+  /**
+   * Whether the model has a silhouette. This value indicates what draw commands
+   * are needed. Inherited from the model render resources.
+   *
+   * @type {boolean}
+   * @readonly
+   *
+   * @private
+   */
+  this.hasSilhouette = modelRenderResources.hasSilhouette;
+
+  /**
+   * Whether the model is part of a tileset that uses the skipLevelOfDetail
+   * optimization. This value indicates what draw commands are needed.
+   * Inherited from the model render resources.
+   *
+   * @type {boolean}
+   * @readonly
+   *
+   * @private
+   */
+  this.hasSkipLevelOfDetail = modelRenderResources.hasSkipLevelOfDetail;
+
+  // Other properties.
+  /**
+   * A reference to the runtime node
+   *
+   * @type {ModelRuntimeNode}
+   * @readonly
+   *
+   * @private
+   */
+  this.runtimeNode = runtimeNode;
+
+  /**
+   * An array of objects describing vertex attributes that will eventually
+   * be used to create a {@link VertexArray} for the draw command. Attributes
+   * at the node level may be needed for extensions such as EXT_mesh_gpu_instancing.
+   *
+   * @type {object[]}
+   * @readonly
+   *
+   * @private
+   */
+  this.attributes = [];
+
+  /**
+   * The index to give to the next vertex attribute added to the attributes array.
+   * POSITION takes index 0.
+   *
+   * @type {number}
+   *
+   * @private
+   */
+  this.attributeIndex = 1;
+
+  /**
+   * The set index to assign to feature ID vertex attribute(s) created from the
+   * offset/repeat in the feature ID attribute.
+   *
+   * @type {number}
+   * @default 0
+   *
+   * @private
+   */
+  this.featureIdVertexAttributeSetIndex = 0;
+
+  /**
+   * The number of instances. This value is set by InstancingPipelineStage.
+   *
+   * @type {number}
+   * @default 0
+   *
+   * @private
+   */
+  this.instanceCount = 0;
+
+  /**
+   * The PrimitiveRenderResources for the primitives of the node.
+   *
+   * @type {PrimitiveRenderResources[]}
+   * @default []
+   *
+   * @private
+   */
+  this.primitiveRenderResources = [];
+}
+
+export default NodeRenderResources;