sdl - How to use Linderdaum Engine with the existing OpenGL context? -

i use sdl initialize opengl context:

sdl_init( sdl_init_video ); sdl_surface* screen = sdl_setvideomode( 1600, 1200, 0, sdl_opengl ); 

and do:

env = new senvironment; env->deploydefaultenvironment( null, "../../commonmedia" ); 

the engine starts , opens new window.

how can use existing window?

you can use deployenvironment instead of deploydefaultenvironment deployenvironment requires handle current window, , 1 of examples shows how can achieved using glut on windows. can current window handle on sdl using following code

sdl_syswminfo sysinfo; //will hold our window information sdl_version(&sysinfo.version); //set sdl version  if(sdl_getwminfo(&sysinfo) <= 0) {     printf("%s : %d\n", sdl_geterror(), sysinfo.window);      return; //or throw exception or whatever        }  #ifdef __win32__ hwnd windowhandle = sysinfo.window; //win32 window handle #else window windowhandle = sysinfo.window; //x11 window handle #endif 

finally definition of deployenvironment looks this:

deployenvironment   (const std::vector< std::string > * commandline, const std::string & logfilename, const std::string & rootdir, const std::string & commonmediadir, const std::string & configfile, const bool          openviewport, const bool          createrenderer, const bool          contexttakeover, void *          externalwndhandle); 

the command line parameter same deploydefaultenvironment, next 4 params paths, can use constants 'default_engine_log_file', 'default_engine_root_dir', 'default_engine_root_pack', 'default_engine_ini_file'. openviewport should false, should createrenderer, , contexttakeover should true. set externalwndhandle window handle stored in variable declared in code above. note example glut on windows, have no idea whether work on other oses.