【fix】修复openlayers 高效率点图层webgl渲染时点击闪一下的问题

Author: songyumeng

examples/openlayers/07_graphiclayer_webgl2.html

@@ -14,10 +14,12 @@
         #title {
             position: absolute;
             color: white;
-            left: 0;
-            top: 30px;
             text-align: center;
-            width: 100%;
+            width: 600px;
+            left: 0; 
+            top: 0; 
+            right: 0; 
+            margin: auto
         }
 
         #title > h3 {

src/openlayers/overlay/Graphic.js

@@ -83,6 +83,9 @@ export class Graphic extends ImageCanvasSource {
 
         if (options.onClick) {
             me.map.on('click', function (e) {
+                if(me.renderer instanceof GraphicWebGLRenderer){
+                    return;
+                }
                 const features = me.map.getFeaturesAtPixel(e.pixel) || [];
                 for (let index = 0; index < features.length; index++) {
                     const graphic = features[index];