diff --git a/src/map/Map.js b/src/map/Map.js
index 6f0e2bc33..d85c9c1ef 100644
--- a/src/map/Map.js
+++ b/src/map/Map.js
@@ -1998,6 +1998,7 @@ class Map extends Handlerable(Eventable(Renderable(Class))) {
             this._zoomLevel = minZoom;
         }
         delete this._prjCenter;
+        delete this._glRes;
         const projection = this.getProjection();
         this._prjCenter = projection.project(this._center);
         this._calcMatrices();
@@ -2591,7 +2592,7 @@ Map.include(/** @lends Map.prototype */{
         const DEFAULT_CENTER = new Coordinate(0, 40);
         const POINT = new Point(0, 0);
         return function (altitude = 0, res, originCenter) {
-            if (this._altitudeOriginDirty)  {
+            if (this._altitudeOriginDirty) {
                 DEFAULT_CENTER.x = this._originLng;
                 this._altitudeOriginDirty = false;
             }
diff --git a/test/map/MapSpec.js b/test/map/MapSpec.js
index 1f09d1d15..004cb3635 100644
--- a/test/map/MapSpec.js
+++ b/test/map/MapSpec.js
@@ -899,13 +899,23 @@ describe('Map.Spec', function () {
     it('#centercross when map.layers=0', function () {
         //clear all layers
         map.removeLayer(baseLayer);
-        map.options.centerCross=true;
-        map.once('frameend',function(){
-            expect(map).to.be.painted(0, 0); 
-            map.options.centerCross=false;
-            map.once('frameend',function(){
-                expect(map).not.to.be.painted(0, 0); 
+        map.options.centerCross = true;
+        map.once('frameend', function () {
+            expect(map).to.be.painted(0, 0);
+            map.options.centerCross = false;
+            map.once('frameend', function () {
+                expect(map).not.to.be.painted(0, 0);
             })
         })
     });
+
+    it('#2128 clear glRes cache when SpatialReference change', function (done) {
+        //clear all layers
+        const glRes = map.getGLRes();
+        map.setSpatialReference({ projection:'EPSG:4326' });
+        setTimeout(() => {
+            expect(map.getGLRes()).not.to.be(glRes);
+            done();
+        }, 100);
+    });
 });