diff --git a/examples/js/pmrem/PMREMGenerator.js b/examples/js/pmrem/PMREMGenerator.js
index 3b25335b4c0330c88b241cc22b14bca89200d4c5..03541b1876f13164a4f8b95d343ad1e45e749ee8 100644
--- a/examples/js/pmrem/PMREMGenerator.js
+++ b/examples/js/pmrem/PMREMGenerator.js
@@ -90,6 +90,7 @@ THREE.PMREMGenerator = ( function () {
 			}
 			_applyPMREM( cubeUVRenderTarget );
 			_cleanup();
+			cubeUVRenderTarget.scissorTest = false;
 
 			return cubeUVRenderTarget;
 
@@ -121,6 +122,7 @@ THREE.PMREMGenerator = ( function () {
 			_textureToCubeUV( cubemap, cubeUVRenderTarget );
 			_applyPMREM( cubeUVRenderTarget );
 			_cleanup();
+			cubeUVRenderTarget.scissorTest = false;
 
 			return cubeUVRenderTarget;
 
@@ -363,6 +365,7 @@ THREE.PMREMGenerator = ( function () {
 		new THREE.WebGLRenderTarget( 3 * SIZE_MAX, 3 * SIZE_MAX, params );
 		cubeUVRenderTarget.texture.mapping = THREE.CubeUVReflectionMapping;
 		cubeUVRenderTarget.texture.name = 'PMREM.cubeUv';
+		cubeUVRenderTarget.scissorTest = true;
 		return cubeUVRenderTarget;
 
 	}
diff --git a/examples/jsm/pmrem/PMREMGenerator.js b/examples/jsm/pmrem/PMREMGenerator.js
index 38eb04cfcc8c253b2a5d143fb28e123c88dc780d..d5cc2b32231a5ae0bde60f9be0b368c5d03eb079 100644
--- a/examples/jsm/pmrem/PMREMGenerator.js
+++ b/examples/jsm/pmrem/PMREMGenerator.js
@@ -116,6 +116,7 @@ var PMREMGenerator = ( function () {
 			}
 			_applyPMREM( cubeUVRenderTarget );
 			_cleanup();
+			cubeUVRenderTarget.scissorTest = false;
 
 			return cubeUVRenderTarget;
 
@@ -147,6 +148,7 @@ var PMREMGenerator = ( function () {
 			_textureToCubeUV( cubemap, cubeUVRenderTarget );
 			_applyPMREM( cubeUVRenderTarget );
 			_cleanup();
+			cubeUVRenderTarget.scissorTest = false;
 
 			return cubeUVRenderTarget;
 
@@ -389,6 +391,7 @@ var PMREMGenerator = ( function () {
 		new WebGLRenderTarget( 3 * SIZE_MAX, 3 * SIZE_MAX, params );
 		cubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;
 		cubeUVRenderTarget.texture.name = 'PMREM.cubeUv';
+		cubeUVRenderTarget.scissorTest = true;
 		return cubeUVRenderTarget;
 
 	}
diff --git a/examples/webgl_materials_envmaps_hdr.html b/examples/webgl_materials_envmaps_hdr.html
index 059c44b1dfbb5ef164bbd8b33807c3b07a8c46b9..25813bce996147754a9e5c51f4d1e205ce346d7b 100644
--- a/examples/webgl_materials_envmaps_hdr.html
+++ b/examples/webgl_materials_envmaps_hdr.html
@@ -36,12 +36,44 @@
 			var container, stats;
 			var camera, scene, renderer, controls;
 			var torusMesh, planeMesh;
-			var ldrCubeRenderTarget, hdrCubeRenderTarget, rgbmCubeRenderTarget;
+			var generatedCubeRenderTarget, ldrCubeRenderTarget, hdrCubeRenderTarget, rgbmCubeRenderTarget;
 			var ldrCubeMap, hdrCubeMap, rgbmCubeMap;
 
 			init();
 			animate();
 
+			function getEnvScene() {
+
+				var envScene = new THREE.Scene();
+
+				var geometry = new THREE.BoxBufferGeometry();
+    			geometry.deleteAttribute('uv');
+    			var roomMaterial = new THREE.MeshStandardMaterial({metalness: 0, side: THREE.BackSide});
+				var room = new THREE.Mesh(geometry, roomMaterial);
+				room.scale.setScalar(10);
+				envScene.add(room);
+
+				var mainLight = new THREE.PointLight(0xffffff, 1.0, 0, 2);
+				mainLight.position.set(0, 4.5, 0);
+				envScene.add(mainLight);
+
+				var lightMaterial = new THREE.MeshBasicMaterial();
+				lightMaterial.color.setScalar(20);
+
+				var light1 = new THREE.Mesh(geometry, lightMaterial);
+				light1.position.set(-5, 2, 0);
+				light1.scale.set(0.1, 1, 1);
+				envScene.add(light1);
+
+				var light2 = new THREE.Mesh(geometry, lightMaterial);
+				light2.position.set(0, 5, 0);
+				light2.scale.set(1, 0.1, 1);
+				envScene.add(light2);
+
+				return envScene;
+
+			}
+
 			function init() {
 
 				container = document.createElement( 'div' );
@@ -84,6 +116,9 @@
 
 				}
 
+				var envScene = getEnvScene();
+				generatedCubeRenderTarget = pmremGenerator.fromScene( envScene );
+
 				var hdrUrls = [ 'px.hdr', 'nx.hdr', 'py.hdr', 'ny.hdr', 'pz.hdr', 'nz.hdr' ];
 				hdrCubeMap = new HDRCubeTextureLoader()
 					.setPath( './textures/cube/pisaHDR/' )
@@ -142,7 +177,7 @@
 
 				var gui = new GUI();
 
-				gui.add( params, 'envMap', [ 'LDR', 'HDR', 'RGBM16' ] );
+				gui.add( params, 'envMap', [ 'Generated', 'LDR', 'HDR', 'RGBM16' ] );
 				gui.add( params, 'roughness', 0, 1, 0.01 );
 				gui.add( params, 'metalness', 0, 1, 0.01 );
 				gui.add( params, 'exposure', 0, 2, 0.01 );
@@ -182,6 +217,10 @@
 
 				switch ( params.envMap ) {
 
+					case 'Generated':
+						renderTarget = generatedCubeRenderTarget;
+						cubeMap = generatedCubeRenderTarget;
+						break;
 					case 'LDR':
 						renderTarget = ldrCubeRenderTarget;
 						cubeMap = ldrCubeMap;