CherryPick f9e455 from master to mr0. do not merge.

Fix software GL renderer.

Change-Id: I7273a8e65c23a0032d155ea6572de2923791e411

Author: Xavier Ducrohet

services/surfaceflinger/Layer.cpp

@@ -284,8 +284,8 @@ void Layer::onDraw(const Region& clip) const
         glMatrixMode(GL_TEXTURE);
         glLoadMatrixf(mTextureMatrix);
         glMatrixMode(GL_MODELVIEW);
-        glEnable(GL_TEXTURE_EXTERNAL_OES);
         glDisable(GL_TEXTURE_2D);
+        glEnable(GL_TEXTURE_EXTERNAL_OES);
     } else {
         glBindTexture(GL_TEXTURE_2D, mFlinger->getProtectedTexName());
         glMatrixMode(GL_TEXTURE);