sdfsdfs

node_modules/pixi.js/lib/rendering/renderers/gpu/GpuDeviceSystem.js

@@ -0,0 +1,79 @@
+'use strict';
+
+var adapter = require('../../../environment/adapter.js');
+var Extensions = require('../../../extensions/Extensions.js');
+
+"use strict";
+class GpuDeviceSystem {
+  /**
+   * @param {WebGPURenderer} renderer - The renderer this System works for.
+   */
+  constructor(renderer) {
+    this._renderer = renderer;
+  }
+  async init(options) {
+    if (this._initPromise)
+      return this._initPromise;
+    this._initPromise = this._createDeviceAndAdaptor(options).then((gpu) => {
+      this.gpu = gpu;
+      this._renderer.runners.contextChange.emit(this.gpu);
+    });
+    return this._initPromise;
+  }
+  /**
+   * Handle the context change event
+   * @param gpu
+   */
+  contextChange(gpu) {
+    this._renderer.gpu = gpu;
+  }
+  /**
+   * Helper class to create a WebGL Context
+   * @param {object} options - An options object that gets passed in to the canvas element containing the
+   *    context attributes
+   * @see https://developer.mozilla.org/en/docs/Web/API/HTMLCanvasElement/getContext
+   * @returns {WebGLRenderingContext} the WebGL context
+   */
+  async _createDeviceAndAdaptor(options) {
+    const adapter$1 = await adapter.DOMAdapter.get().getNavigator().gpu.requestAdapter({
+      powerPreference: options.powerPreference,
+      forceFallbackAdapter: options.forceFallbackAdapter
+    });
+    const requiredFeatures = [
+      "texture-compression-bc",
+      "texture-compression-astc",
+      "texture-compression-etc2"
+    ].filter((feature) => adapter$1.features.has(feature));
+    const device = await adapter$1.requestDevice({
+      requiredFeatures
+    });
+    return { adapter: adapter$1, device };
+  }
+  destroy() {
+    this.gpu = null;
+    this._renderer = null;
+  }
+}
+/** @ignore */
+GpuDeviceSystem.extension = {
+  type: [
+    Extensions.ExtensionType.WebGPUSystem
+  ],
+  name: "device"
+};
+/** The default options for the GpuDeviceSystem. */
+GpuDeviceSystem.defaultOptions = {
+  /**
+   * {@link WebGPUOptions.powerPreference}
+   * @default default
+   */
+  powerPreference: void 0,
+  /**
+   * Force the use of the fallback adapter
+   * @default false
+   */
+  forceFallbackAdapter: false
+};
+
+exports.GpuDeviceSystem = GpuDeviceSystem;
+//# sourceMappingURL=GpuDeviceSystem.js.map