Clear the dirty flag on copied images.

TRAC #18495
Signed-off-by: Daniel Koch
Author: Nicolas Capens

git-svn-id: https://angleproject.googlecode.com/svn/trunk@820 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/Texture.cpp b/src/libGLESv2/Texture.cpp
index 86a9874..5a8632b 100644
--- a/src/libGLESv2/Texture.cpp
+++ b/src/libGLESv2/Texture.cpp
@@ -1713,7 +1713,7 @@
             convertToRenderTarget();
         }
         
-        updateTexture();
+        mImageArray[level].dirty = false;
 
         if (width != 0 && height != 0 && level < levelCount())
         {
@@ -2558,7 +2558,7 @@
             convertToRenderTarget();
         }
         
-        updateTexture();
+        mImageArray[faceindex][level].dirty = false;
 
         ASSERT(width == height);