Webgl points renderer / terminates worker & dispose helper

src/ol/renderer/webgl/Layer.js

@@ -70,6 +70,7 @@ class WebGLLayerRenderer extends LayerRenderer {
    * @inheritDoc
    */
   disposeInternal() {
+    this.helper.disposeInternal();
     super.disposeInternal();
   }
 

src/ol/renderer/webgl/PointsLayer.js

@@ -574,6 +574,14 @@ class WebGLPointsLayerRenderer extends WebGLLayerRenderer {
     const renderCount = this.indicesBuffer_.getSize();
     this.helper.drawElements(0, renderCount);
   }
+
+  /**
+   * @inheritDoc
+   */
+  disposeInternal() {
+    this.worker_.terminate();
+    super.disposeInternal();
+  }
 }
 
 export default WebGLPointsLayerRenderer;

test/spec/ol/renderer/webgl/pointslayer.test.js

@@ -254,4 +254,20 @@ describe('ol.renderer.webgl.PointsLayer', function() {
     });
   });
 
+  describe('#disposeInternal', function() {
+    it('terminates the worker and calls dispose on the helper', function() {
+      const layer = new VectorLayer({
+        source: new VectorSource()
+      });
+      const renderer = new WebGLPointsLayerRenderer(layer, {
+      });
+
+      const spyHelper = sinon.spy(renderer.helper, 'disposeInternal');
+      const spyWorker = sinon.spy(renderer.worker_, 'terminate');
+      renderer.disposeInternal();
+      expect(spyHelper.called).to.be(true);
+      expect(spyWorker.called).to.be(true);
+    });
+  });
+
 });