No composeFrame if prepareFrame returns false

src/ol/renderer/canvas/canvasimagelayerrenderer.js

@@ -143,4 +143,5 @@ ol.renderer.canvas.ImageLayer.prototype.prepareFrame =
     this.updateLogos(frameState, imageSource);
   }
 
+  return true;
 };

src/ol/renderer/canvas/canvasmaprenderer.js

@@ -188,9 +188,10 @@ ol.renderer.canvas.Map.prototype.renderFrame = function(frameState) {
         layerState.sourceState != ol.source.State.READY) {
       continue;
     }
-    layerRenderer.prepareFrame(frameState, layerState);
+    if (layerRenderer.prepareFrame(frameState, layerState)) {
       layerRenderer.composeFrame(frameState, layerState, context);
     }
+  }
 
   this.dispatchComposeEvent_(ol.render.EventType.POSTCOMPOSE, frameState);
 

src/ol/renderer/canvas/canvastilelayerrenderer.js

@@ -415,4 +415,5 @@ ol.renderer.canvas.TileLayer.prototype.prepareFrame =
       (origin[0] - center[0]) / tilePixelResolution,
       (center[1] - origin[1]) / tilePixelResolution);
 
+  return true;
 };

src/ol/renderer/canvas/canvasvectorlayerrenderer.js

@@ -176,7 +176,7 @@ ol.renderer.canvas.VectorLayer.prototype.prepareFrame =
 
   if (!this.dirty_ && (frameState.viewHints[ol.ViewHint.ANIMATING] ||
       frameState.viewHints[ol.ViewHint.INTERACTING])) {
-    return;
+    return true;
   }
 
   var frameStateExtent = frameState.extent;
@@ -195,7 +195,7 @@ ol.renderer.canvas.VectorLayer.prototype.prepareFrame =
       this.renderedRevision_ == vectorLayerRevision &&
       this.renderedRenderOrder_ == vectorLayerRenderOrder &&
       ol.extent.containsExtent(this.renderedExtent_, frameStateExtent)) {
-    return;
+    return true;
   }
 
   var extent = this.renderedExtent_;
@@ -258,6 +258,7 @@ ol.renderer.canvas.VectorLayer.prototype.prepareFrame =
   this.renderedRenderOrder_ = vectorLayerRenderOrder;
   this.replayGroup_ = replayGroup;
 
+  return true;
 };
 
 

src/ol/renderer/dom/domimagelayerrenderer.js

@@ -138,6 +138,7 @@ ol.renderer.dom.ImageLayer.prototype.prepareFrame =
     this.updateLogos(frameState, imageSource);
   }
 
+  return true;
 };
 
 

src/ol/renderer/dom/domtilelayerrenderer.js

@@ -86,7 +86,7 @@ ol.renderer.dom.TileLayer.prototype.prepareFrame =
       goog.style.setElementShown(this.target, false);
       this.renderedVisible_ = false;
     }
-    return;
+    return true;
   }
 
   var pixelRatio = frameState.pixelRatio;
@@ -263,6 +263,7 @@ ol.renderer.dom.TileLayer.prototype.prepareFrame =
   this.scheduleExpireCache(frameState, tileSource);
   this.updateLogos(frameState, tileSource);
 
+  return true;
 };
 
 

src/ol/renderer/layerrenderer.js

@@ -98,6 +98,7 @@ ol.renderer.Layer.prototype.handleImageChange = function(event) {
 /**
  * @param {olx.FrameState} frameState Frame state.
  * @param {ol.layer.LayerState} layerState Layer state.
+ * @return {boolean} whether composeFrame should be called.
  */
 ol.renderer.Layer.prototype.prepareFrame = goog.abstractMethod;
 

src/ol/renderer/webgl/webglimagelayerrenderer.js

@@ -175,6 +175,8 @@ ol.renderer.webgl.ImageLayer.prototype.prepareFrame =
     this.updateAttributions(frameState.attributions, image.getAttributions());
     this.updateLogos(frameState, imageSource);
   }
+
+  return true;
 };
 
 

src/ol/renderer/webgl/webglmaprenderer.js

@@ -2,6 +2,7 @@
 
 goog.provide('ol.renderer.webgl.Map');
 
+goog.require('goog.array');
 goog.require('goog.asserts');
 goog.require('goog.dom');
 goog.require('goog.dom.TagName');
@@ -448,21 +449,17 @@ ol.renderer.webgl.Map.prototype.renderFrame = function(frameState) {
   var layerStatesToDraw = [];
   var layerStatesArray = frameState.layerStatesArray;
   var viewResolution = frameState.viewState.resolution;
-  var i, ii, layerState;
+  var i, ii, layerRenderer, layerState;
   for (i = 0, ii = layerStatesArray.length; i < ii; ++i) {
     layerState = layerStatesArray[i];
     if (ol.layer.Layer.visibleAtResolution(layerState, viewResolution) &&
         layerState.sourceState == ol.source.State.READY) {
+      layerRenderer = this.getLayerRenderer(layerState.layer);
+      goog.asserts.assertInstanceof(layerRenderer, ol.renderer.webgl.Layer);
+      if (layerRenderer.prepareFrame(frameState, layerState)) {
         layerStatesToDraw.push(layerState);
       }
     }
-
-  var layerRenderer;
-  for (i = 0, ii = layerStatesToDraw.length; i < ii; ++i) {
-    layerState = layerStatesToDraw[i];
-    layerRenderer = this.getLayerRenderer(layerState.layer);
-    goog.asserts.assertInstanceof(layerRenderer, ol.renderer.webgl.Layer);
-    layerRenderer.prepareFrame(frameState, layerState);
   }
 
   var width = frameState.size[0] * frameState.pixelRatio;

src/ol/renderer/webgl/webgltilelayerrenderer.js

@@ -331,4 +331,5 @@ ol.renderer.webgl.TileLayer.prototype.prepareFrame =
       -0.5,
       0);
 
+  return true;
 };