extern void (*gfx_cull_face)(Gfx_cull_face cf);
extern void (*gfx_reshape)(int width, int height);
extern void (*gfx_wireframe)(bool enable);
+extern void (*gfx_swapbuffers)();
+extern void (*gfx_begin_drawing)();
+extern void (*gfx_end_drawing)();
bool gfx_init(Gfx_API api);
void gfx_cleanup();