Initial

resources/app/client-esm/canvas/sources/global-light-source.mjs

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+import BaseLightSource from "./base-light-source.mjs";
+
+/**
+ * A specialized subclass of the BaseLightSource which is used to render global light source linked to the scene.
+ */
+export default class GlobalLightSource extends BaseLightSource {
+
+  /** @inheritDoc */
+  static sourceType = "GlobalLight";
+
+  /** @override */
+  static effectsCollection = "lightSources";
+
+  /** @inheritDoc */
+  static defaultData = {
+    ...super.defaultData,
+    rotation: 0,
+    angle: 360,
+    attenuation: 0,
+    priority: -Infinity,
+    vision: false,
+    walls: false,
+    elevation: Infinity,
+    darkness: {min: 0, max: 0}
+  }
+
+  /**
+   * Name of this global light source.
+   * @type {string}
+   * @defaultValue GlobalLightSource.sourceType
+   */
+  name = this.constructor.sourceType;
+
+  /**
+   * A custom polygon placeholder.
+   * @type {PIXI.Polygon|number[]|null}
+   */
+  customPolygon = null;
+
+  /* -------------------------------------------- */
+  /*  Global Light Source Initialization          */
+  /* -------------------------------------------- */
+
+  /** @override */
+  _createShapes() {
+    this.shape = this.customPolygon ?? canvas.dimensions.sceneRect.toPolygon();
+  }
+
+  /* -------------------------------------------- */
+
+  /** @override */
+  _initializeSoftEdges() {
+    this._flags.renderSoftEdges = false;
+  }
+
+  /* -------------------------------------------- */
+
+  /** @override */
+  _updateGeometry() {
+    const offset = this._flags.renderSoftEdges ? this.constructor.EDGE_OFFSET : 0;
+    const pm = new PolygonMesher(this.shape, {offset});
+    this._geometry = pm.triangulate(this._geometry);
+    const bounds = this.shape instanceof PointSourcePolygon ? this.shape.bounds : this.shape.getBounds();
+    if ( this._geometry.bounds ) this._geometry.bounds.copyFrom(bounds);
+    else this._geometry.bounds = bounds;
+  }
+
+
+  /* -------------------------------------------- */
+
+  /** @override */
+  _updateCommonUniforms(shader) {
+    super._updateCommonUniforms(shader);
+    const {min, max} = this.data.darkness;
+    const u = shader.uniforms;
+    u.globalLight = true;
+    u.globalLightThresholds[0] = min;
+    u.globalLightThresholds[1] = max;
+  }
+}