diff --git a/examples/style-renderer.html b/examples/style-renderer.html
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+++ b/examples/style-renderer.html
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+---
+layout: example.html
+title: Style renderer
+shortdesc: Example of a style with a custom renderer.
+docs: >
+  A custom style renderer, a prerender event and different global composite operations are used to render the flag of a country as fill for the country shape.
+tags: "vector, geojson, style, custom, renderer"
+---
+<div id="map" class="map"></div>
+<div id="info">&nbsp;</div>
diff --git a/examples/style-renderer.js b/examples/style-renderer.js
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+++ b/examples/style-renderer.js
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+import GeoJSON from '../src/ol/format/GeoJSON.js';
+import Map from '../src/ol/Map.js';
+import VectorLayer from '../src/ol/layer/Vector.js';
+import VectorSource from '../src/ol/source/Vector.js';
+import View from '../src/ol/View.js';
+import {Fill, Style} from '../src/ol/style.js';
+import {getBottomLeft, getHeight, getWidth} from '../src/ol/extent.js';
+import {toContext} from '../src/ol/render.js';
+
+const polygonFill = new Fill();
+const style = new Style({
+  renderer: function (pixelCoordinates, state) {
+    const context = state.context;
+    const geometry = state.geometry.clone();
+    geometry.setCoordinates(pixelCoordinates);
+    const extent = geometry.getExtent();
+    const width = getWidth(extent);
+    const height = getHeight(extent);
+    const flag = state.feature.get('flag');
+    if (!flag || height < 1 || width < 1) {
+      return;
+    }
+    // Stitch out country shape from the blue canvas
+    context.globalCompositeOperation = 'destination-out';
+    const renderContext = toContext(context, {
+      pixelRatio: 1,
+    });
+    renderContext.setFillStrokeStyle(polygonFill);
+    renderContext.drawGeometry(geometry);
+    const bottomLeft = getBottomLeft(extent);
+    // Fill transparent country with the flag image
+    context.globalCompositeOperation = 'destination-over';
+    const left = bottomLeft[0];
+    const bottom = bottomLeft[1];
+    context.drawImage(flag, 2, 12, 60, 40, left, bottom, width, height);
+  },
+});
+
+const vectorLayer = new VectorLayer({
+  source: new VectorSource({
+    url:
+      'https://openlayersbook.github.io/openlayers_book_samples/assets/data/countries.geojson',
+    format: new GeoJSON(),
+  }),
+  style: style,
+});
+
+// Fill the canvas blue as clip mask for flag images
+vectorLayer.on('prerender', function (event) {
+  const context = event.context;
+  context.globalCompositeOperation = 'source-over';
+  context.fillStyle = 'rgb(152,293,253)';
+  context.fillRect(0, 0, context.canvas.width, context.canvas.height);
+});
+
+// Load country flags and set them as `flag` attribute on the country feature
+vectorLayer.getSource().on('addfeature', function (event) {
+  const feature = event.feature;
+  const img = new Image();
+  img.onload = function () {
+    feature.set('flag', img);
+  };
+  img.src =
+    'https://www.countryflags.io/' +
+    feature.get('iso_a2').toLowerCase() +
+    '/flat/64.png';
+});
+
+new Map({
+  layers: [vectorLayer],
+  target: 'map',
+  view: new View({
+    center: [0, 0],
+    zoom: 1,
+  }),
+});