The open source OpenXR runtime
u/debug_gui: Refactor loop
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src/xrt/auxiliary/util/u_debug_gui.c
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src/xrt/auxiliary/util/u_debug_gui.c
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bool sdl_initialized;
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char layout_file[1024];
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#ifdef XRT_BUILD_DRIVER_QWERTY
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bool qwerty_enabled;
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#endif
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};
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struct gui_imgui
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}
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static void
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sdl2_loop_events(struct u_debug_gui *p)
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{
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SDL_Event event;
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while (SDL_PollEvent(&event)) {
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igImGui_ImplSDL2_ProcessEvent(&event);
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#ifdef XRT_BUILD_DRIVER_QWERTY
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// Caution here, qwerty driver is being accessed by the main thread as well
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if (p->qwerty_enabled) {
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qwerty_process_event(p->base.xsysd->xdevs, p->base.xsysd->xdev_count, event);
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}
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#endif
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if (event.type == SDL_QUIT) {
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p->base.stopped = true;
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}
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if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE &&
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event.window.windowID == SDL_GetWindowID(p->win)) {
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p->base.stopped = true;
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}
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}
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}
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static void
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sdl2_loop_new_frame(struct u_debug_gui *p)
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{
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// Start the Dear ImGui frame
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igImGui_ImplOpenGL3_NewFrame();
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igImGui_ImplSDL2_NewFrame(p->win);
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// Start new frame.
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igNewFrame();
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}
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static void
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sdl2_loop_show_scene(struct u_debug_gui *p, struct gui_imgui *gui)
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{
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// Render the scene into it.
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gui_scene_manager_render(&p->base);
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// Handle this here.
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if (gui->show_imgui_demo) {
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igShowDemoWindow(&gui->show_imgui_demo);
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}
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// Handle this here.
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if (gui->show_implot_demo) {
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ImPlot_ShowDemoWindow(&gui->show_implot_demo);
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}
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}
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static void
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sdl2_loop_render(struct u_debug_gui *p, struct gui_imgui *gui, ImGuiIO *io)
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{
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// Build the DrawData (EndFrame).
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igRender();
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// Clear the background.
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glViewport(0, 0, (int)io->DisplaySize.x, (int)io->DisplaySize.y);
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glClearColor(gui->clear.r, gui->clear.g, gui->clear.b, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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igImGui_ImplOpenGL3_RenderDrawData(igGetDrawData());
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}
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static void
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sdl2_loop(struct u_debug_gui *p)
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{
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// Need to call this before any other Imgui call.
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#ifdef XRT_BUILD_DRIVER_QWERTY
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// Setup qwerty driver usage
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bool qwerty_enabled = debug_get_bool_option_qwerty_enable();
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p->qwerty_enabled = debug_get_bool_option_qwerty_enable();
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#endif
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// Main loop
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u_var_add_bool(&gui, &p->base.stopped, "Exit");
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while (!p->base.stopped) {
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SDL_Event event;
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while (SDL_PollEvent(&event)) {
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igImGui_ImplSDL2_ProcessEvent(&event);
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sdl2_loop_events(p);
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#ifdef XRT_BUILD_DRIVER_QWERTY
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// Caution here, qwerty driver is being accessed by the main thread as well
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if (qwerty_enabled) {
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qwerty_process_event(p->base.xsysd->xdevs, p->base.xsysd->xdev_count, event);
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}
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#endif
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sdl2_loop_new_frame(p);
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if (event.type == SDL_QUIT) {
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p->base.stopped = true;
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}
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sdl2_loop_show_scene(p, &gui);
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if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE &&
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event.window.windowID == SDL_GetWindowID(p->win)) {
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p->base.stopped = true;
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}
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}
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// Start the Dear ImGui frame
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igImGui_ImplOpenGL3_NewFrame();
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igImGui_ImplSDL2_NewFrame(p->win);
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// Start new frame.
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igNewFrame();
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// Render the scene into it.
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gui_scene_manager_render(&p->base);
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// Handle this here.
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if (gui.show_imgui_demo) {
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igShowDemoWindow(&gui.show_imgui_demo);
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}
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// Handle this here.
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if (gui.show_implot_demo) {
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ImPlot_ShowDemoWindow(&gui.show_implot_demo);
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}
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// Build the DrawData (EndFrame).
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igRender();
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// Clear the background.
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glViewport(0, 0, (int)io->DisplaySize.x, (int)io->DisplaySize.y);
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glClearColor(gui.clear.r, gui.clear.g, gui.clear.b, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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igImGui_ImplOpenGL3_RenderDrawData(igGetDrawData());
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sdl2_loop_render(p, &gui, io);
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SDL_GL_SwapWindow(p->win);
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// Update prober things.
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gui_prober_update(&p->base);
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}
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