From 6234b695128d994dacfece861fef3682b136d9a5 Mon Sep 17 00:00:00 2001
From: Tim Schaub <tim.schaub@gmail.com>
Date: Wed, 14 Nov 2018 15:46:43 +0100
Subject: [PATCH] Handle opacity and rotation in canvas intermediate renderer

---
 src/ol/renderer/canvas/IntermediateCanvas.js | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/ol/renderer/canvas/IntermediateCanvas.js b/src/ol/renderer/canvas/IntermediateCanvas.js
index 5fddae6104..27e325f132 100644
--- a/src/ol/renderer/canvas/IntermediateCanvas.js
+++ b/src/ol/renderer/canvas/IntermediateCanvas.js
@@ -89,7 +89,20 @@ class IntermediateCanvasRenderer extends CanvasLayerRenderer {
     }
 
     this.postRender(this.layerContext, frameState, layerState);
-    return this.layerContext.canvas;
+
+    const canvas = this.layerContext.canvas;
+    const opacity = layerState.opacity;
+    if (opacity !== canvas.style.opacity) {
+      canvas.style.opacity = opacity;
+    }
+
+    const rotation = frameState.viewState.rotation;
+    const transform = 'rotate(' + rotation + 'rad)';
+    if (transform !== canvas.style.transform) {
+      canvas.style.transform = transform;
+    }
+
+    return canvas;
   }
 
   /**