Merge branch 'dev_unflip_pmrem_tiles' of https://github.com/sciecode/three.js into dev_unflip_pmrem_tiles

src/extras/PMREMGenerator.js

@@ -257,8 +257,8 @@ PMREMGenerator.prototype = {
 		var fov = 90;
 		var aspect = 1;
 		var cubeCamera = new PerspectiveCamera( fov, aspect, near, far );
-		var upSign = [ 1, 1, 1, 1, - 1, 1 ];
-		var forwardSign = [ 1, 1, - 1, - 1, - 1, 1 ];
+		var upSign = [ 1, - 1, 1, 1, 1, 1 ];
+		var forwardSign = [ 1, 1, 1, - 1, - 1, - 1 ];
 		var renderer = this._renderer;
 
 		var outputEncoding = renderer.outputEncoding;
@@ -270,7 +270,6 @@ PMREMGenerator.prototype = {
 		renderer.toneMapping = LinearToneMapping;
 		renderer.toneMappingExposure = 1.0;
 		renderer.outputEncoding = LinearEncoding;
-		scene.scale.z *= - 1;
 
 		var background = scene.background;
 		if ( background && background.isColor ) {
@@ -317,7 +316,6 @@ PMREMGenerator.prototype = {
 		renderer.toneMappingExposure = toneMappingExposure;
 		renderer.outputEncoding = outputEncoding;
 		renderer.setClearColor( clearColor, clearAlpha );
-		scene.scale.z *= - 1;
 
 	},