Expose context lost simulator

src/graphics/rendering/settings/default-startup-settings.ts

@@ -11,4 +11,5 @@ export const defaultStartupSettings: StartupSettings = {
   backgroundColor: vec4.fromValues(1, 1, 1, 1),
   lightPenetrationRatio: 0.75,
   enableStopwatch: false,
+  enableContextLostSimulator: false,
 };

src/graphics/rendering/settings/startup-settings.ts

@@ -41,6 +41,13 @@ export interface StartupSettings {
    */
   paletteSize: number;
 
+  /**
+   * Many context lost event will be simulated when enabled.
+   *
+   * Useful for testing.
+   */
+  enableContextLostSimulator: boolean;
+
   /**
    * The default background color of the scene, can have transparency on every platform.
    */