GLES2: Fix the use of B8G8R8 textures.
GLES2: Fix the use of B8G8R8 textures.

--HG--
extra : rebase_source : 07466d814dcefdb57503fae0a83660127087572e

ruleless/ogre,ehsan/ogre,ruleless/ogre,bhlzlx/ogre,ruleless/ogre,bhlzlx/ogre,ruleless/ogre,ehsan/ogre,ruleless/ogre,ehsan/ogre,bhlzlx/ogre,ehsan/ogre,bhlzlx/ogre,bhlzlx/ogre,bhlzlx/ogre,ehsan/ogre,ruleless/ogre