Hi,
This is caused by a bug in Agar-1.4.0, which incorrectly selected the
"sdlfb" driver in this case. The fix is in SVN and will be included in
the next release.
On Wed, Nov 10, 2010 at 03:24:17PM +1100, Darcu wrote:
> Hi, I've been working to build a SDL+OpenGL game engine for a while now,
> and decided to build the editor GUI using Agar.
>
> Anyway, I want to be able initialize the OpenGL/SDL context
> myself, and then to be able to turn on an editor mode in the
> engine using Agar later. Anyway, I wrote some small test code to see if
> I could launch Agar with a previously defined OpenGL SDL_Surface. The
> program is adapted from the
> C++ demo.
>
> Code:
> #include <agar/core.h>
> #include <agar/gui.h>
> #include <agar/gui/opengl.h>
> #ifdef _APPLE_
> #include <SDL/SDL_opengl.h>
> #include <SDL/SDL.h>
> #else
> #include <SDL_opengl.h>
> #include <SDL.h>
> #endif
> #include <iostream>
>
> using namespace std;
>
> int
> main(int argc, char *argv[])
> {
>
> AG_Window *win;
> SDL_Surface * screen;
> SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER);
> /*Set buffer sizes*/
> SDL_GL_SetAttribute(SDL_GL_RED_SIZE,8);
> SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE,8);
> SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE,8);
> SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE,8);
> SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE,8);
> screen = SDL_SetVideoMode(640,480,32,SDL_OPENGL| SDL_HWSURFACE);
> if (AG_InitCore("cpp-demo", 0) == -1) {
> cerr << AG_GetError() << endl;
> return (1);
> }
>
> if (AG_InitVideoSDL(screen,AG_VIDEO_OPENGL) == -1) {
> cerr << AG_GetError() << endl;
> return (-1);
> }
>
> AG_BindGlobalKey(AG_KEY_ESCAPE, AG_KEYMOD_ANY, AG_Quit);
>
> win = AG_WindowNew(0);
> AG_LabelNew(win, 0, "Hello World!");
> AG_WindowShow(win);
>
> AG_EventLoop();
> AG_Destroy();
>
> return (0);
> }
>
>
> As you can see I'm calling AG_InitVideoSDL. The above code
> segment works correctly if you remove the SDL_OPENGL
> flag from SDL_SetVideoMode, otherwise it causes a
> segmentation fault when AG_EventLoop is called. I did a
> stack trace, and found that the function SDL_FillRect
> was being called, which would indicate that the non-opengl
> sdl driver is being called. So, my question is this, what is the
> correct way of setting Agar up for an OpenGl based
> SDL_Surface which has already been created. I'm keen to
> have a strict control on Agar using a custom event loop,
> but for now I just want to get it accepting my surface.
>
>
>
>
> _______________________________________________
> Agar mailing list
> [email protected]
> http://libagar.org/lists.html
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