Merge pull request #9584 from ahocevar/reuse-render-target

Reuse render target
2019-05-24 10:33:36 +02:00
parent ddb7da3733 d8f41a9d73
commit 96331c5d95
18 changed files with 290 additions and 163 deletions
--- a/src/ol/source/Raster.js
+++ b/src/ol/source/Raster.js
@@ -444,7 +444,11 @@ function getImageData(layer, frameState, layerState) {
  }
  const width = frameState.size[0];
  const height = frameState.size[1];
-  const element = renderer.renderFrame(frameState, layerState);
+  const container = renderer.renderFrame(frameState, layerState, null);
+  let element;
+  if (container) {
+    element = container.firstElementChild;
+  }
  if (!(element instanceof HTMLCanvasElement)) {
    throw new Error('Unsupported rendered element: ' + element);
  }