Function AddGraphics

lobster/src/graphics.cpp:142–1127

}

void AddGraphics(NativeRegistry &nfr) {

nfr("gl_window", "title,xs,ys,fullscreen,novsync,samples", "SIII?I?I?", "S?",
    "opens a window for OpenGL rendering. returns error string if any problems, nil"
    " otherwise.",
    [](VM &vm, Value &title, Value &xs, Value &ys, Value &fullscreen, Value &novsync,
                          Value &samples) {
        if (graphics_initialized)
            vm.BuiltinError("cannot call gl_window() twice");
        string err = SDLInit(title.sval()->strv(), int2(intp2(xs.ival(), ys.ival())),
                             fullscreen.ival() != 0, novsync.ival() == 0,
                             max(1, samples.intval()));
        if (err.empty()) {
            err = LoadMaterialFile("data/shaders/default.materials");
        }
        if (!err.empty()) {
            LOG_INFO(err);
            return Value(vm.NewString(err));
        }
        colorshader = LookupShader("color");
        assert(colorshader);
        LOG_INFO("graphics fully initialized...");
        graphics_initialized = true;
        return Value();
    });

nfr("gl_require_version", "major,minor", "II", "",
    "Call this before gl_window to request a certain version of OpenGL context."
            " Currently only works on win/nix, minimum is 3.2.",
    [](VM &, Value &major, Value &minor) {
        SDLRequireGLVersion(major.intval(), minor.intval());
        return Value();
    });

nfr("gl_load_materials", "materialdefs,inline", "SI?", "S?",
    "loads an additional materials file (data/shaders/default.materials is already loaded by default"
    " by gl_window()). if inline is true, materialdefs is not a filename, but the actual"
    " materials. returns error string if any problems, nil otherwise.",
    [](VM &vm, Value &fn, Value &isinline) {
        TestGL(vm);
        auto err = isinline.True() ? ParseMaterialFile(fn.sval()->strv())
                                   : LoadMaterialFile(fn.sval()->strv());
        return err[0] ? Value(vm.NewString(err)) : Value();
    });

nfr("gl_frame", "", "", "B",
    "advances rendering by one frame, swaps buffers, and collects new input events."
    " returns true if the closebutton on the window was pressed",
    [](VM &vm) {
        TestGL(vm);
        EngineSuspendIfNeeded();
        auto cb = GraphicsFrameStart();
        vm.vml.LogFrame();
        return Value(!cb);
    });

nfr("gl_log_frame", "delta", "F", "",
    "call this function instead of gl_frame() to simulate a frame based program from"