static void video_init_gl(void) {
video.glcontext = SDL_GL_CreateContext(video.window);
load_gl_functions();
check_gl_extensions();
#ifdef DEBUG_GL
if(glext.debug_output) {
video_gl_debug_enable();
} else {
log_warn("OpenGL debugging is not supported by the implementation");
}
#endif
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glEnable(GL_CULL_FACE);
glEnable(GL_BLEND);
init_quadvbo();
glClear(GL_COLOR_BUFFER_BIT);
}
int egl_init_opengl(void *erlCallbacks)
{
#ifdef _WIN32
driver_init((TWinDynDriverCallbacks *) erlCallbacks);
#endif
if(egl_initiated == 0) {
if(load_gl_functions()) {
init_tess();
egl_initiated = 1;
}
}
return 1;
}