init method

dynamic init()

Implementation

init() {
  var parameters = this._parameters;

  var adapterOptions = GPURequestAdapterOptions(
      powerPreference: parameters["powerPreference"]);

  var adapter = requestAdapter(adapterOptions);

  if (adapter == null) {
    throw ('WebGPURenderer: Unable to create WebGPU adapter.');
  }

  var deviceDescriptor = GPUDeviceDescriptor(maxBindGroups: 1);
  // "requiredFeatures": parameters["requiredFeatures"],
  // "requiredLimits": parameters["requiredLimits"]

  var device = adapter.requestDevice(deviceDescriptor);

  // var context = ( parameters["context"] != undefined ) ? parameters["context"] : this.domElement.getContext( 'webgpu' );

  // context.configure( {
  // 	"device": device,
  // 	"format": GPUTextureFormat.BGRA8Unorm // this is the only valid context format right now (r121)
  // } );

  this._adapter = adapter;
  this._device = device;
  // this._context = context;

  this._info = new WebGPUInfo();
  this._properties = new WebGPUProperties();
  this._attributes = new WebGPUAttributes(device);
  this._geometries = new WebGPUGeometries(this._attributes, this._info);
  this._textures = new WebGPUTextures(device, this._properties, this._info);
  this._objects = new WebGPUObjects(this._geometries, this._info);
  this._nodes = new WebGPUNodes(this);
  this._computePipelines = new WebGPUComputePipelines(device);
  this._renderPipelines = new WebGPURenderPipelines(
      this, device, parameters["sampleCount"], this._nodes);
  this._renderPipelines.bindings = new WebGPUBindings(
      device,
      this._info,
      this._properties,
      this._textures,
      this._renderPipelines,
      this._computePipelines,
      this._attributes,
      this._nodes);
  this._bindings = this._renderPipelines.bindings;
  this._renderLists = new WebGPURenderLists();
  this._background = new WebGPUBackground(this);

  //
  // TODO 每次都创建新对象 优化？？
  this._renderPassDescriptor = GPURenderPassDescriptor(
      colorAttachments: GPURenderPassColorAttachment(
        clearColor: GPUColor(r: 0.0, g: 0.0, b: 0.0, a: 1.0),
        loadOp: GPULoadOp.Clear,
        storeOp: GPUStoreOp.Store
      ),
      depthStencilAttachment: GPURenderPassDepthStencilAttachment(
        depthStoreOp: GPUStoreOp.Store,
        depthLoadOp: GPULoadOp.Clear,
        stencilStoreOp: GPUStoreOp.Store,
        stencilLoadOp: GPULoadOp.Clear,
      )
    );

  this._setupColorBuffer();
  this._setupDepthBuffer();
}