From 10cde0a4b28ef13fe9504d3f518a48b62e930921 Mon Sep 17 00:00:00 2001
From: Kirill Vainer <shadowislord@gmail.com>
Date: Sat, 25 Apr 2015 22:42:20 -0400
Subject: [PATCH] DXTFlipper: fix incorrect flipping of DXT5 images of size 2x2
 For DXT1/3 images, the format for color and alpha blocks is the same, so the
 bug would not appear. For DXT5 images, the alpha block is formatted
 differently. The issue is that it flips the color block and then the alpha
 block for 2x2 images, but the correct order is alpha block then color block.

---
 .../com/jme3/texture/plugins/DXTFlipper.java  | 23 ++++++++++---------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/jme3-core/src/plugins/java/com/jme3/texture/plugins/DXTFlipper.java b/jme3-core/src/plugins/java/com/jme3/texture/plugins/DXTFlipper.java
index 9c71aa132..726cf3e19 100644
--- a/jme3-core/src/plugins/java/com/jme3/texture/plugins/DXTFlipper.java
+++ b/jme3-core/src/plugins/java/com/jme3/texture/plugins/DXTFlipper.java
@@ -242,21 +242,12 @@ public class DXTFlipper {
                 img.position(blockByteOffset);
                 img.limit(blockByteOffset + bpb);
 
-                img.get(colorBlock);
-                if (type == 4 || type == 5)
-                    flipDXT5Block(colorBlock, h);
-                else
-                    flipDXT1orDXTA3Block(colorBlock, h);
-
-                // write block (no need to flip block indexes, only pixels
-                // inside block
-                retImg.put(colorBlock);
-
                 if (alphaBlock != null){
                     img.get(alphaBlock);
                     switch (type){
                         case 2:
-                            flipDXT3Block(alphaBlock, h); break;
+                            flipDXT3Block(alphaBlock, h); 
+                            break;
                         case 3:
                         case 4: 
                             flipDXT5Block(alphaBlock, h);
@@ -264,6 +255,16 @@ public class DXTFlipper {
                     }
                     retImg.put(alphaBlock);
                 }
+                
+                img.get(colorBlock);
+                if (type == 4 || type == 5)
+                    flipDXT5Block(colorBlock, h);
+                else
+                    flipDXT1orDXTA3Block(colorBlock, h);
+
+                // write block (no need to flip block indexes, only pixels
+                // inside block
+                retImg.put(colorBlock);
             }
             retImg.rewind();
         }else if (h >= 4){