Removed some obsolete references to OpenGL.

git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@2885 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba

src/common/FrameBufferSDL2.hxx

@@ -21,7 +21,6 @@
 #define FRAMEBUFFER_SDL2_HXX
 
 #include <SDL.h>
-#include <SDL_opengl.h>
 
 class OSystem;
 class FBSurfaceSDL2;
@@ -45,7 +44,7 @@ class FrameBufferSDL2 : public FrameBuffer
 
   public:
     /**
-      Creates a new OpenGL framebuffer
+      Creates a new SDL2 framebuffer
     */
     FrameBufferSDL2(OSystem* osystem);
 

src/emucore/OSystem.hxx

@@ -541,14 +541,10 @@ class OSystem
 
   private:
     /**
-      Creates the various framebuffers/renderers available in this system
-      (for now, that means either 'software' or 'opengl').  Note that
-      it will only create one type per run of Stella.
+      Creates the various framebuffers/renderers available in this system.
+      Note that it will only create one type per run of Stella.
 
       @return  Success or failure of the framebuffer creation
-               Note that if OpenGL mode fails because OpenGL is not
-               available, rendering will attempt to fall back to
-               software mode
     */
     FBInitStatus createFrameBuffer();