From Ulrich Hertlein, "not sure how severe this is but I believe there's a bug in

Texture.cpp:applyTexImage2D_subload:

<code>
unsigned char* data = = (unsigned char*)image->data();
if (needImageRescale) {
 // allocates rescale buffer
 data = new unsigned char[newTotalSize];

 // calls gluScaleImage into the data buffer
}

const unsigned char* dataPtr = image->data();
// subloads 'dataPtr'

// deletes 'data'
</code>

In effect, the scaled data would never be used.

I've also replaced bits of duplicate code in Texture1D/2D/2DArray/3D/Cubemap/Rectangle
that checks if the texture image can/should be unref'd with common functionality in
Texture.cpp.

"

src/osg/Texture2DArray.cpp

@@ -363,15 +363,15 @@ void Texture2DArray::apply(State& state) const
 
         textureObject->setAllocated(_numMipmapLevels,_internalFormat,_textureWidth,_textureHeight,_textureDepth,0);
         
-        // no idea what this for ;-)
-        if (state.getMaxTexturePoolSize()==0 && _unrefImageDataAfterApply && areAllTextureObjectsLoaded())
+        // unref image data?
+        if (isSafeToUnrefImageData(state))
         {
             Texture2DArray* non_const_this = const_cast<Texture2DArray*>(this);
             for (int n=0; n<_textureDepth; n++)
             {                
                 if (_images[n].valid() && _images[n]->getDataVariance()==STATIC)
                 {
-                    non_const_this->_images[n] = 0;
+                    non_const_this->_images[n] = NULL;
                 }
             }
         }