I do not use any object in my scene. All my Nodes are in the compositor, but when I render compositing by OpenGL I get only an empty screen.
I can use objects as simple trick, but I don't like that. I need output my compositing by opengl directly.
How can I render compositing by OpenGL only in blender? - Using file node will use Blender Engine not Opengl - When I press F12(Internal Blender engine) I see my compositing result. - When I press Camera button(rendering by opengl ), I see nothing...empty viewport