Fixed screen mode transitions.

Former-commit-id: fe866ef

Author: slembcke

cocos2d/CCTransition.m

@@ -112,7 +112,7 @@ - (id)initWithDuration:(NSTimeInterval)duration
     _outgoingOverIncoming = NO;
 
     // find out where the outgoing scene will end (if it is a transition with movement)
-    CGSize size = [CCDirector sharedDirector].designSize;
+    CGSize size = [CCDirector sharedDirector].viewportRect.size;
     switch (direction) {
         case CCTransitionDirectionDown: _outgoingDestination = CGPointMake(0, -size.height); break;
         case CCTransitionDirectionLeft: _outgoingDestination = CGPointMake(-size.width, 0); break;
@@ -188,21 +188,25 @@ - (void)startTransition:(CCScene *)scene
 
     // create render textures
     // get viewport size
-    CGSize size = [CCDirector sharedDirector].designSize;
+    CGRect rect = [CCDirector sharedDirector].viewportRect;
+		
+		// Make sure we aren't rounding down.
+		rect.size.width = ceil(rect.size.width);
+		rect.size.height = ceil(rect.size.height);
 
     // create texture for outgoing scene
-    _outgoingTexture = [CCRenderTexture renderTextureWithWidth:size.width / _outgoingDownScale
-                                                        height:size.height / _outgoingDownScale
+    _outgoingTexture = [CCRenderTexture renderTextureWithWidth:rect.size.width / _outgoingDownScale
+                                                        height:rect.size.height / _outgoingDownScale
                                                    pixelFormat:_transitionPixelFormat];
-    _outgoingTexture.position = CGPointMake(size.width * 0.5f, size.height * 0.5f);
+    _outgoingTexture.position = CGPointMake(rect.size.width * 0.5f + rect.origin.x, rect.size.height * 0.5f + rect.origin.y);
     _outgoingTexture.scale = _outgoingDownScale;
     [self addChild:_outgoingTexture z:_outgoingOverIncoming];
 
     // create texture for incoming scene
-    _incomingTexture = [CCRenderTexture renderTextureWithWidth:size.width / _incomingDownScale
-                                                        height:size.height / _incomingDownScale
+    _incomingTexture = [CCRenderTexture renderTextureWithWidth:rect.size.width / _incomingDownScale
+                                                        height:rect.size.height / _incomingDownScale
                                                    pixelFormat:_transitionPixelFormat];
-    _incomingTexture.position = CGPointMake(size.width * 0.5f, size.height * 0.5f);
+    _incomingTexture.position = CGPointMake(rect.size.width * 0.5f + rect.origin.x, rect.size.height * 0.5f + rect.origin.y);
     _incomingTexture.scale = _incomingDownScale;
     [self addChild:_incomingTexture];