From Mattias Helsing, "While using the dds plugin (via osgdem) it was able to write 24bit

images with BGR order but not read them. My 2-liner fixed it for me
but it may be that someone with more knowledge of the plugin want to
insert more pixel formats in the reading part of the plugin."

src/osgPlugins/dds/ReaderWriterDDS.cpp

@@ -337,6 +337,9 @@ osg::Image* ReadDDSFile(std::istream& _istream)
             { "R8G8B8",      24,   0xff0000,   0x00ff00,   0x0000ff,   0x000000,
               GL_RGB , GL_BGR , GL_UNSIGNED_BYTE }, 
 
+            { "B8G8R8",      24,   0x0000ff,   0x00ff00,   0xff0000,   0x000000,
+              GL_RGB , GL_RGB , GL_UNSIGNED_BYTE }, 
+
             { "A8R8G8B8",    32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000,
               GL_RGBA, GL_BGRA, GL_UNSIGNED_BYTE }, 
             { "X8R8G8B8",    32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0x00000000,