575     SDLGLcontext:=SDL_GL_CreateContext(SDLwindow);

   575     SDLGLcontext:=SDL_GL_CreateContext(SDLwindow);

   576     SDLTry(SDLGLcontext <> nil, true);

   576     SDLTry(SDLGLcontext <> nil, true);

   577     SDL_GL_SetSwapInterval(1);

   577     SDL_GL_SetSwapInterval(1);

   578 {$ENDIF}

   578 {$ENDIF}

   579 

   579 

   581     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 0);

   581     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 0);

   582     SDL_GL_SetAttribute(SDL_GL_RETAINED_BACKING, 1);

   582     SDL_GL_SetAttribute(SDL_GL_RETAINED_BACKING, 1);

   583     vendor:= vendor; // avoid hint

   583     vendor:= vendor; // avoid hint

   584     one:= one; // avoid hint

   584     one:= one; // avoid hint

   585 {$ELSE}

   585 {$ELSE}