Examples: refactor all examples with a MainLoopStep() function, to facilitate use with Emscripten. (#2492, #3699)
Aligned all examples.
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index a79caf4..b4c66ca 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -95,6 +95,10 @@
Latest Emscripten seems to emit correct values.
- Backend: WebGPU: Fix building for latest WebGPU specs (remove implicit layout generation).
(#6117, #4116, #3632) [@tonygrue, @bfierz]
+- Examples: refactord all examples to use a "MainLoopStep()" function. This is in order
+ to be able to trivially make some compile with Emscripten. (#2492, #3699)
+ While not all examples are expected to compile on Emscripten, we try to keep all of them
+ as close as possible to each others.
- Examples: Win32: Fixed examples using RegisterClassW() since 1.89 to also call
DefWindowProcW() instead of DefWindowProc() so that title text are correctly converted
when application is compiled without /DUNICODE. (#5725, #5961, #5975) [@markreidvfx]
diff --git a/examples/example_allegro5/main.cpp b/examples/example_allegro5/main.cpp
index e58f705..9e848dc 100644
--- a/examples/example_allegro5/main.cpp
+++ b/examples/example_allegro5/main.cpp
@@ -16,6 +16,10 @@
#include "imgui.h"
#include "imgui_impl_allegro5.h"
+// Forward declarations of helper functions
+bool MainLoopStep(ALLEGRO_DISPLAY* display, ALLEGRO_EVENT_QUEUE* queue);
+
+// Main code
int main(int, char**)
{
// Setup Allegro
@@ -23,6 +27,8 @@
al_install_keyboard();
al_install_mouse();
al_init_primitives_addon();
+
+ // Create window with graphics context and event queue
al_set_new_display_flags(ALLEGRO_RESIZABLE);
ALLEGRO_DISPLAY* display = al_create_display(1280, 720);
al_set_window_title(display, "Dear ImGui Allegro 5 example");
@@ -60,79 +66,11 @@
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
- bool running = true;
- while (running)
+ while (true)
{
- // Poll and handle events (inputs, window resize, etc.)
- // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
- // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
- // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
- // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
- ALLEGRO_EVENT ev;
- while (al_get_next_event(queue, &ev))
- {
- ImGui_ImplAllegro5_ProcessEvent(&ev);
- if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
- running = false;
- if (ev.type == ALLEGRO_EVENT_DISPLAY_RESIZE)
- {
- ImGui_ImplAllegro5_InvalidateDeviceObjects();
- al_acknowledge_resize(display);
- ImGui_ImplAllegro5_CreateDeviceObjects();
- }
- }
-
- // Start the Dear ImGui frame
- ImGui_ImplAllegro5_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::Render();
- al_clear_to_color(al_map_rgba_f(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w));
- ImGui_ImplAllegro5_RenderDrawData(ImGui::GetDrawData());
- al_flip_display();
+ if (!MainLoopStep(display, queue))
+ break;
}
// Cleanup
@@ -143,3 +81,83 @@
return 0;
}
+
+bool MainLoopStep(ALLEGRO_DISPLAY* display, ALLEGRO_EVENT_QUEUE* queue)
+{
+ // Poll and handle events (inputs, window resize, etc.)
+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+ bool done = false;
+ ALLEGRO_EVENT ev;
+ while (al_get_next_event(queue, &ev))
+ {
+ ImGui_ImplAllegro5_ProcessEvent(&ev);
+ if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
+ done = true;
+ if (ev.type == ALLEGRO_EVENT_DISPLAY_RESIZE)
+ {
+ ImGui_ImplAllegro5_InvalidateDeviceObjects();
+ al_acknowledge_resize(display);
+ ImGui_ImplAllegro5_CreateDeviceObjects();
+ }
+ }
+ if (done)
+ return false;
+
+ // Start the Dear ImGui frame
+ ImGui_ImplAllegro5_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ al_clear_to_color(al_map_rgba_f(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w));
+ ImGui_ImplAllegro5_RenderDrawData(ImGui::GetDrawData());
+ al_flip_display();
+
+ return true;
+}
diff --git a/examples/example_android_opengl3/main.cpp b/examples/example_android_opengl3/main.cpp
index 0dab5d0..467f484 100644
--- a/examples/example_android_opengl3/main.cpp
+++ b/examples/example_android_opengl3/main.cpp
@@ -21,11 +21,72 @@
static std::string g_IniFilename = "";
// Forward declarations of helper functions
+static void Init(struct android_app* app);
+static void Shutdown();
+static void MainLoopStep();
static int ShowSoftKeyboardInput();
static int PollUnicodeChars();
static int GetAssetData(const char* filename, void** out_data);
-void init(struct android_app* app)
+// Main code
+static void handleAppCmd(struct android_app* app, int32_t appCmd)
+{
+ switch (appCmd)
+ {
+ case APP_CMD_SAVE_STATE:
+ break;
+ case APP_CMD_INIT_WINDOW:
+ Init(app);
+ break;
+ case APP_CMD_TERM_WINDOW:
+ Shutdown();
+ break;
+ case APP_CMD_GAINED_FOCUS:
+ case APP_CMD_LOST_FOCUS:
+ break;
+ }
+}
+
+static int32_t handleInputEvent(struct android_app* app, AInputEvent* inputEvent)
+{
+ return ImGui_ImplAndroid_HandleInputEvent(inputEvent);
+}
+
+void android_main(struct android_app* app)
+{
+ app->onAppCmd = handleAppCmd;
+ app->onInputEvent = handleInputEvent;
+
+ while (true)
+ {
+ int out_events;
+ struct android_poll_source* out_data;
+
+ // Poll all events. If the app is not visible, this loop blocks until g_Initialized == true.
+ while (ALooper_pollAll(g_Initialized ? 0 : -1, NULL, &out_events, (void**)&out_data) >= 0)
+ {
+ // Process one event
+ if (out_data != NULL)
+ out_data->process(app, out_data);
+
+ // Exit the app by returning from within the infinite loop
+ if (app->destroyRequested != 0)
+ {
+ // shutdown() should have been called already while processing the
+ // app command APP_CMD_TERM_WINDOW. But we play save here
+ if (!g_Initialized)
+ Shutdown();
+
+ return;
+ }
+ }
+
+ // Initiate a new frame
+ MainLoopStep();
+ }
+}
+
+void Init(struct android_app* app)
{
if (g_Initialized)
return;
@@ -125,13 +186,14 @@
g_Initialized = true;
}
-void tick()
+void MainLoopStep()
{
ImGuiIO& io = ImGui::GetIO();
if (g_EglDisplay == EGL_NO_DISPLAY)
return;
// Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
static bool show_demo_window = true;
static bool show_another_window = false;
static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
@@ -197,7 +259,7 @@
eglSwapBuffers(g_EglDisplay, g_EglSurface);
}
-void shutdown()
+void Shutdown()
{
if (!g_Initialized)
return;
@@ -228,63 +290,7 @@
g_Initialized = false;
}
-static void handleAppCmd(struct android_app* app, int32_t appCmd)
-{
- switch (appCmd)
- {
- case APP_CMD_SAVE_STATE:
- break;
- case APP_CMD_INIT_WINDOW:
- init(app);
- break;
- case APP_CMD_TERM_WINDOW:
- shutdown();
- break;
- case APP_CMD_GAINED_FOCUS:
- break;
- case APP_CMD_LOST_FOCUS:
- break;
- }
-}
-
-static int32_t handleInputEvent(struct android_app* app, AInputEvent* inputEvent)
-{
- return ImGui_ImplAndroid_HandleInputEvent(inputEvent);
-}
-
-void android_main(struct android_app* app)
-{
- app->onAppCmd = handleAppCmd;
- app->onInputEvent = handleInputEvent;
-
- while (true)
- {
- int out_events;
- struct android_poll_source* out_data;
-
- // Poll all events. If the app is not visible, this loop blocks until g_Initialized == true.
- while (ALooper_pollAll(g_Initialized ? 0 : -1, NULL, &out_events, (void**)&out_data) >= 0)
- {
- // Process one event
- if (out_data != NULL)
- out_data->process(app, out_data);
-
- // Exit the app by returning from within the infinite loop
- if (app->destroyRequested != 0)
- {
- // shutdown() should have been called already while processing the
- // app command APP_CMD_TERM_WINDOW. But we play save here
- if (!g_Initialized)
- shutdown();
-
- return;
- }
- }
-
- // Initiate a new frame
- tick();
- }
-}
+// Helper functions
// Unfortunately, there is no way to show the on-screen input from native code.
// Therefore, we call ShowSoftKeyboardInput() of the main activity implemented in MainActivity.kt via JNI.
diff --git a/examples/example_emscripten_wgpu/main.cpp b/examples/example_emscripten_wgpu/main.cpp
index c342459..bc9e321 100644
--- a/examples/example_emscripten_wgpu/main.cpp
+++ b/examples/example_emscripten_wgpu/main.cpp
@@ -21,17 +21,13 @@
static int wgpu_swap_chain_width = 0;
static int wgpu_swap_chain_height = 0;
-// States tracked across render frames
-static bool show_demo_window = true;
-static bool show_another_window = false;
-static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Forward declarations
-static bool init_wgpu();
-static void main_loop(void* window);
+static void MainLoopStep(void* window);
+static bool InitWGPU();
static void print_glfw_error(int error, const char* description);
static void print_wgpu_error(WGPUErrorType error_type, const char* message, void*);
+// Main code
int main(int, char**)
{
glfwSetErrorCallback(print_glfw_error);
@@ -39,9 +35,8 @@
return 1;
// Make sure GLFW does not initialize any graphics context.
- // This needs to be done explicitly later
+ // This needs to be done explicitly later.
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
-
GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+WebGPU example", NULL, NULL);
if (!window)
{
@@ -50,7 +45,7 @@
}
// Initialize the WebGPU environment
- if (!init_wgpu())
+ if (!InitWGPU())
{
if (window)
glfwDestroyWindow(window);
@@ -101,12 +96,12 @@
// This function will directly return and exit the main function.
// Make sure that no required objects get cleaned up.
// This way we can use the browsers 'requestAnimationFrame' to control the rendering.
- emscripten_set_main_loop_arg(main_loop, window, 0, false);
+ emscripten_set_main_loop_arg(MainLoopStep, window, 0, false);
return 0;
}
-static bool init_wgpu()
+static bool InitWGPU()
{
wgpu_device = emscripten_webgpu_get_device();
if (!wgpu_device)
@@ -130,24 +125,21 @@
return true;
}
-static void main_loop(void* window)
+static void MainLoopStep(void* window)
{
glfwPollEvents();
int width, height;
- glfwGetFramebufferSize((GLFWwindow*) window, &width, &height);
+ glfwGetFramebufferSize((GLFWwindow*)window, &width, &height);
// React to changes in screen size
if (width != wgpu_swap_chain_width && height != wgpu_swap_chain_height)
{
ImGui_ImplWGPU_InvalidateDeviceObjects();
-
if (wgpu_swap_chain)
wgpuSwapChainRelease(wgpu_swap_chain);
-
wgpu_swap_chain_width = width;
wgpu_swap_chain_height = height;
-
WGPUSwapChainDescriptor swap_chain_desc = {};
swap_chain_desc.usage = WGPUTextureUsage_RenderAttachment;
swap_chain_desc.format = WGPUTextureFormat_RGBA8Unorm;
@@ -155,7 +147,6 @@
swap_chain_desc.height = height;
swap_chain_desc.presentMode = WGPUPresentMode_Fifo;
wgpu_swap_chain = wgpuDeviceCreateSwapChain(wgpu_device, wgpu_surface, &swap_chain_desc);
-
ImGui_ImplWGPU_CreateDeviceObjects();
}
@@ -164,6 +155,12 @@
ImGui_ImplGlfw_NewFrame();
ImGui::NewFrame();
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
// 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
if (show_demo_window)
ImGui::ShowDemoWindow(&show_demo_window);
@@ -229,7 +226,7 @@
static void print_glfw_error(int error, const char* description)
{
- printf("Glfw Error %d: %s\n", error, description);
+ printf("GLFW Error %d: %s\n", error, description);
}
static void print_wgpu_error(WGPUErrorType error_type, const char* message, void*)
diff --git a/examples/example_glfw_opengl2/main.cpp b/examples/example_glfw_opengl2/main.cpp
index b4d7200..53fa62f 100644
--- a/examples/example_glfw_opengl2/main.cpp
+++ b/examples/example_glfw_opengl2/main.cpp
@@ -23,22 +23,30 @@
#pragma comment(lib, "legacy_stdio_definitions")
#endif
+// Data
+static GLFWwindow* g_AppWindow = NULL;
+
+// Forward declarations of helper functions
+void MainLoopStep();
static void glfw_error_callback(int error, const char* description)
{
- fprintf(stderr, "Glfw Error %d: %s\n", error, description);
+ fprintf(stderr, "GLFW Error %d: %s\n", error, description);
}
+// Main code
int main(int, char**)
{
- // Setup window
glfwSetErrorCallback(glfw_error_callback);
if (!glfwInit())
return 1;
+
+ // Create window with graphics context
GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+OpenGL2 example", NULL, NULL);
if (window == NULL)
return 1;
glfwMakeContextCurrent(window);
glfwSwapInterval(1); // Enable vsync
+ g_AppWindow = window;
// Setup Dear ImGui context
IMGUI_CHECKVERSION();
@@ -71,82 +79,9 @@
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
- // Our state
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
while (!glfwWindowShouldClose(window))
- {
- // Poll and handle events (inputs, window resize, etc.)
- // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
- // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
- // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
- // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
- glfwPollEvents();
-
- // Start the Dear ImGui frame
- ImGui_ImplOpenGL2_NewFrame();
- ImGui_ImplGlfw_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::Render();
- int display_w, display_h;
- glfwGetFramebufferSize(window, &display_w, &display_h);
- glViewport(0, 0, display_w, display_h);
- glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
- glClear(GL_COLOR_BUFFER_BIT);
-
- // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!),
- // you may need to backup/reset/restore other state, e.g. for current shader using the commented lines below.
- //GLint last_program;
- //glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
- //glUseProgram(0);
- ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
- //glUseProgram(last_program);
-
- glfwMakeContextCurrent(window);
- glfwSwapBuffers(window);
- }
+ MainLoopStep();
// Cleanup
ImGui_ImplOpenGL2_Shutdown();
@@ -158,3 +93,81 @@
return 0;
}
+
+void MainLoopStep()
+{
+ // Poll and handle events (inputs, window resize, etc.)
+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+ GLFWwindow* window = g_AppWindow;
+ glfwPollEvents();
+
+ // Start the Dear ImGui frame
+ ImGui_ImplOpenGL2_NewFrame();
+ ImGui_ImplGlfw_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ int display_w, display_h;
+ glfwGetFramebufferSize(window, &display_w, &display_h);
+ glViewport(0, 0, display_w, display_h);
+ glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!),
+ // you may need to backup/reset/restore other state, e.g. for current shader using the commented lines below.
+ //GLint last_program;
+ //glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
+ //glUseProgram(0);
+ ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
+ //glUseProgram(last_program);
+
+ glfwMakeContextCurrent(window);
+ glfwSwapBuffers(window);
+}
diff --git a/examples/example_glfw_opengl3/main.cpp b/examples/example_glfw_opengl3/main.cpp
index 222e27d..1dd1a2f 100644
--- a/examples/example_glfw_opengl3/main.cpp
+++ b/examples/example_glfw_opengl3/main.cpp
@@ -20,14 +20,19 @@
#pragma comment(lib, "legacy_stdio_definitions")
#endif
+// Data
+static GLFWwindow* g_AppWindow = NULL;
+
+// Forward declarations of helper functions
+void MainLoopStep();
static void glfw_error_callback(int error, const char* description)
{
- fprintf(stderr, "Glfw Error %d: %s\n", error, description);
+ fprintf(stderr, "GLFW Error %d: %s\n", error, description);
}
+// Main code
int main(int, char**)
{
- // Setup window
glfwSetErrorCallback(glfw_error_callback);
if (!glfwInit())
return 1;
@@ -61,6 +66,7 @@
return 1;
glfwMakeContextCurrent(window);
glfwSwapInterval(1); // Enable vsync
+ g_AppWindow = window;
// Setup Dear ImGui context
IMGUI_CHECKVERSION();
@@ -93,74 +99,9 @@
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
- // Our state
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
while (!glfwWindowShouldClose(window))
- {
- // Poll and handle events (inputs, window resize, etc.)
- // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
- // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
- // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
- // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
- glfwPollEvents();
-
- // Start the Dear ImGui frame
- ImGui_ImplOpenGL3_NewFrame();
- ImGui_ImplGlfw_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::Render();
- int display_w, display_h;
- glfwGetFramebufferSize(window, &display_w, &display_h);
- glViewport(0, 0, display_w, display_h);
- glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
- glClear(GL_COLOR_BUFFER_BIT);
- ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
-
- glfwSwapBuffers(window);
- }
+ MainLoopStep();
// Cleanup
ImGui_ImplOpenGL3_Shutdown();
@@ -172,3 +113,73 @@
return 0;
}
+
+void MainLoopStep()
+{
+ // Poll and handle events (inputs, window resize, etc.)
+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+ GLFWwindow* window = g_AppWindow;
+ glfwPollEvents();
+
+ // Start the Dear ImGui frame
+ ImGui_ImplOpenGL3_NewFrame();
+ ImGui_ImplGlfw_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ int display_w, display_h;
+ glfwGetFramebufferSize(window, &display_w, &display_h);
+ glViewport(0, 0, display_w, display_h);
+ glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
+ glClear(GL_COLOR_BUFFER_BIT);
+ ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+
+ glfwSwapBuffers(window);
+}
diff --git a/examples/example_glfw_vulkan/main.cpp b/examples/example_glfw_vulkan/main.cpp
index 0d685f7..668d907 100644
--- a/examples/example_glfw_vulkan/main.cpp
+++ b/examples/example_glfw_vulkan/main.cpp
@@ -31,6 +31,7 @@
#define IMGUI_VULKAN_DEBUG_REPORT
#endif
+// Data
static VkAllocationCallbacks* g_Allocator = NULL;
static VkInstance g_Instance = VK_NULL_HANDLE;
static VkPhysicalDevice g_PhysicalDevice = VK_NULL_HANDLE;
@@ -41,10 +42,17 @@
static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE;
+static GLFWwindow* g_AppWindow = NULL;
static ImGui_ImplVulkanH_Window g_MainWindowData;
static int g_MinImageCount = 2;
static bool g_SwapChainRebuild = false;
+// Forward declarations of helper functions
+void MainLoopStep();
+static void glfw_error_callback(int error, const char* description)
+{
+ fprintf(stderr, "GLFW Error %d: %s\n", error, description);
+}
static void check_vk_result(VkResult err)
{
if (err == 0)
@@ -347,22 +355,16 @@
wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores
}
-static void glfw_error_callback(int error, const char* description)
-{
- fprintf(stderr, "Glfw Error %d: %s\n", error, description);
-}
-
+// Main code
int main(int, char**)
{
- // Setup GLFW window
glfwSetErrorCallback(glfw_error_callback);
if (!glfwInit())
return 1;
+ // Create window with Vulkan context
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+Vulkan example", NULL, NULL);
-
- // Setup Vulkan
if (!glfwVulkanSupported())
{
printf("GLFW: Vulkan Not Supported\n");
@@ -371,6 +373,7 @@
uint32_t extensions_count = 0;
const char** extensions = glfwGetRequiredInstanceExtensions(&extensions_count);
SetupVulkan(extensions, extensions_count);
+ g_AppWindow = window;
// Create Window Surface
VkSurfaceKHR surface;
@@ -458,91 +461,9 @@
ImGui_ImplVulkan_DestroyFontUploadObjects();
}
- // Our state
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
while (!glfwWindowShouldClose(window))
- {
- // Poll and handle events (inputs, window resize, etc.)
- // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
- // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
- // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
- // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
- glfwPollEvents();
-
- // Resize swap chain?
- if (g_SwapChainRebuild)
- {
- int width, height;
- glfwGetFramebufferSize(window, &width, &height);
- if (width > 0 && height > 0)
- {
- ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
- ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
- g_MainWindowData.FrameIndex = 0;
- g_SwapChainRebuild = false;
- }
- }
-
- // Start the Dear ImGui frame
- ImGui_ImplVulkan_NewFrame();
- ImGui_ImplGlfw_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::Render();
- ImDrawData* draw_data = ImGui::GetDrawData();
- const bool is_minimized = (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f);
- if (!is_minimized)
- {
- wd->ClearValue.color.float32[0] = clear_color.x * clear_color.w;
- wd->ClearValue.color.float32[1] = clear_color.y * clear_color.w;
- wd->ClearValue.color.float32[2] = clear_color.z * clear_color.w;
- wd->ClearValue.color.float32[3] = clear_color.w;
- FrameRender(wd, draw_data);
- FramePresent(wd);
- }
- }
+ MainLoopStep();
// Cleanup
err = vkDeviceWaitIdle(g_Device);
@@ -559,3 +480,91 @@
return 0;
}
+
+void MainLoopStep()
+{
+ // Poll and handle events (inputs, window resize, etc.)
+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+ GLFWwindow* window = g_AppWindow;
+ glfwPollEvents();
+
+ // Resize swap chain?
+ if (g_SwapChainRebuild)
+ {
+ int width, height;
+ glfwGetFramebufferSize(window, &width, &height);
+ if (width > 0 && height > 0)
+ {
+ ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
+ ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
+ g_MainWindowData.FrameIndex = 0;
+ g_SwapChainRebuild = false;
+ }
+ }
+
+ // Start the Dear ImGui frame
+ ImGui_ImplVulkan_NewFrame();
+ ImGui_ImplGlfw_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ ImDrawData* draw_data = ImGui::GetDrawData();
+ const bool is_minimized = (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f);
+ if (!is_minimized)
+ {
+ ImGui_ImplVulkanH_Window* wd = &g_MainWindowData;
+ wd->ClearValue.color.float32[0] = clear_color.x * clear_color.w;
+ wd->ClearValue.color.float32[1] = clear_color.y * clear_color.w;
+ wd->ClearValue.color.float32[2] = clear_color.z * clear_color.w;
+ wd->ClearValue.color.float32[3] = clear_color.w;
+ FrameRender(wd, draw_data);
+ FramePresent(wd);
+ }
+}
diff --git a/examples/example_glut_opengl2/main.cpp b/examples/example_glut_opengl2/main.cpp
index 81239cd..bd46970 100644
--- a/examples/example_glut_opengl2/main.cpp
+++ b/examples/example_glut_opengl2/main.cpp
@@ -19,22 +19,95 @@
#include "imgui_impl_opengl2.h"
#define GL_SILENCE_DEPRECATION
#ifdef __APPLE__
- #include <GLUT/glut.h>
+#include <GLUT/glut.h>
#else
- #include <GL/freeglut.h>
+#include <GL/freeglut.h>
#endif
#ifdef _MSC_VER
#pragma warning (disable: 4505) // unreferenced local function has been removed
#endif
+// Forward declarations of helper functions
+void MainLoopStep();
+
// Our state
static bool show_demo_window = true;
static bool show_another_window = false;
static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-void my_display_code()
+int main(int argc, char** argv)
{
+ // Create GLUT window
+ glutInit(&argc, argv);
+#ifdef __FREEGLUT_EXT_H__
+ glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_GLUTMAINLOOP_RETURNS);
+#endif
+ glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_MULTISAMPLE);
+ glutInitWindowSize(1280, 720);
+ glutCreateWindow("Dear ImGui GLUT+OpenGL2 Example");
+
+ // Setup GLUT display function
+ // We will also call ImGui_ImplGLUT_InstallFuncs() to get all the other functions installed for us,
+ // otherwise it is possible to install our own functions and call the imgui_impl_glut.h functions ourselves.
+ glutDisplayFunc(MainLoopStep);
+
+ // Setup Dear ImGui context
+ IMGUI_CHECKVERSION();
+ ImGui::CreateContext();
+ ImGuiIO& io = ImGui::GetIO(); (void)io;
+ //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
+
+ // Setup Dear ImGui style
+ ImGui::StyleColorsDark();
+ //ImGui::StyleColorsLight();
+
+ // Setup Platform/Renderer backends
+ // FIXME: Consider reworking this example to install our own GLUT funcs + forward calls ImGui_ImplGLUT_XXX ones, instead of using ImGui_ImplGLUT_InstallFuncs().
+ ImGui_ImplGLUT_Init();
+ ImGui_ImplOpenGL2_Init();
+
+ // Install GLUT handlers (glutReshapeFunc(), glutMotionFunc(), glutPassiveMotionFunc(), glutMouseFunc(), glutKeyboardFunc() etc.)
+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+ ImGui_ImplGLUT_InstallFuncs();
+
+
+ // Load Fonts
+ // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+ // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+ // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+ // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+ // - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use Freetype for higher quality font rendering.
+ // - Read 'docs/FONTS.md' for more instructions and details.
+ // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+ //io.Fonts->AddFontDefault();
+ //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf", 18.0f);
+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+ //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+ //IM_ASSERT(font != NULL);
+
+ // Main loop
+ glutMainLoop();
+
+ // Cleanup
+ ImGui_ImplOpenGL2_Shutdown();
+ ImGui_ImplGLUT_Shutdown();
+ ImGui::DestroyContext();
+
+ return 0;
+}
+
+void MainLoopStep()
+{
+ // Start the Dear ImGui frame
+ ImGui_ImplOpenGL2_NewFrame();
+ ImGui_ImplGLUT_NewFrame();
+
// 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
if (show_demo_window)
ImGui::ShowDemoWindow(&show_demo_window);
@@ -71,15 +144,6 @@
show_another_window = false;
ImGui::End();
}
-}
-
-void glut_display_func()
-{
- // Start the Dear ImGui frame
- ImGui_ImplOpenGL2_NewFrame();
- ImGui_ImplGLUT_NewFrame();
-
- my_display_code();
// Rendering
ImGui::Render();
@@ -93,66 +157,3 @@
glutSwapBuffers();
glutPostRedisplay();
}
-
-// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
-// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
-// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
-// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
-
-int main(int argc, char** argv)
-{
- // Create GLUT window
- glutInit(&argc, argv);
-#ifdef __FREEGLUT_EXT_H__
- glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_GLUTMAINLOOP_RETURNS);
-#endif
- glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_MULTISAMPLE);
- glutInitWindowSize(1280, 720);
- glutCreateWindow("Dear ImGui GLUT+OpenGL2 Example");
-
- // Setup GLUT display function
- // We will also call ImGui_ImplGLUT_InstallFuncs() to get all the other functions installed for us,
- // otherwise it is possible to install our own functions and call the imgui_impl_glut.h functions ourselves.
- glutDisplayFunc(glut_display_func);
-
- // Setup Dear ImGui context
- IMGUI_CHECKVERSION();
- ImGui::CreateContext();
- ImGuiIO& io = ImGui::GetIO(); (void)io;
- //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
-
- // Setup Dear ImGui style
- ImGui::StyleColorsDark();
- //ImGui::StyleColorsLight();
-
- // Setup Platform/Renderer backends
- // FIXME: Consider reworking this example to install our own GLUT funcs + forward calls ImGui_ImplGLUT_XXX ones, instead of using ImGui_ImplGLUT_InstallFuncs().
- ImGui_ImplGLUT_Init();
- ImGui_ImplGLUT_InstallFuncs();
- ImGui_ImplOpenGL2_Init();
-
- // Load Fonts
- // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
- // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
- // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
- // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
- // - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use Freetype for higher quality font rendering.
- // - Read 'docs/FONTS.md' for more instructions and details.
- // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
- //io.Fonts->AddFontDefault();
- //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf", 18.0f);
- //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
- //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
- //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
- //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
- //IM_ASSERT(font != NULL);
-
- glutMainLoop();
-
- // Cleanup
- ImGui_ImplOpenGL2_Shutdown();
- ImGui_ImplGLUT_Shutdown();
- ImGui::DestroyContext();
-
- return 0;
-}
diff --git a/examples/example_sdl_directx11/main.cpp b/examples/example_sdl_directx11/main.cpp
index 87e7c88..ac9091a 100644
--- a/examples/example_sdl_directx11/main.cpp
+++ b/examples/example_sdl_directx11/main.cpp
@@ -12,12 +12,14 @@
#include <SDL_syswm.h>
// Data
+static SDL_Window* g_AppWindow = NULL;
static ID3D11Device* g_pd3dDevice = NULL;
static ID3D11DeviceContext* g_pd3dDeviceContext = NULL;
static IDXGISwapChain* g_pSwapChain = NULL;
static ID3D11RenderTargetView* g_mainRenderTargetView = NULL;
// Forward declarations of helper functions
+bool MainLoopStep();
bool CreateDeviceD3D(HWND hWnd);
void CleanupDeviceD3D();
void CreateRenderTarget();
@@ -42,6 +44,7 @@
SDL_VERSION(&wmInfo.version);
SDL_GetWindowWMInfo(window, &wmInfo);
HWND hwnd = (HWND)wmInfo.info.win.window;
+ g_AppWindow = window;
// Initialize Direct3D
if (!CreateDeviceD3D(hwnd))
@@ -81,88 +84,11 @@
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
- // Our state
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
- bool done = false;
- while (!done)
+ while (true)
{
- // Poll and handle events (inputs, window resize, etc.)
- // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
- // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
- // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
- // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
- SDL_Event event;
- while (SDL_PollEvent(&event))
- {
- ImGui_ImplSDL2_ProcessEvent(&event);
- if (event.type == SDL_QUIT)
- done = true;
- if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
- done = true;
- if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window))
- {
- // Release all outstanding references to the swap chain's buffers before resizing.
- CleanupRenderTarget();
- g_pSwapChain->ResizeBuffers(0, 0, 0, DXGI_FORMAT_UNKNOWN, 0);
- CreateRenderTarget();
- }
- }
-
- // Start the Dear ImGui frame
- ImGui_ImplDX11_NewFrame();
- ImGui_ImplSDL2_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::Render();
- const float clear_color_with_alpha[4] = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
- g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
- g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, clear_color_with_alpha);
- ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
-
- g_pSwapChain->Present(1, 0); // Present with vsync
- //g_pSwapChain->Present(0, 0); // Present without vsync
+ if (!MainLoopStep())
+ break;
}
// Cleanup
@@ -177,8 +103,92 @@
return 0;
}
-// Helper functions
+bool MainLoopStep()
+{
+ // Poll and handle SDL events (inputs, window resize, etc.)
+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+ SDL_Window* window = g_AppWindow;
+ SDL_Event event;
+ while (SDL_PollEvent(&event))
+ {
+ ImGui_ImplSDL2_ProcessEvent(&event);
+ if (event.type == SDL_QUIT)
+ return false;
+ if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
+ return false;
+ if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window))
+ {
+ // Release all outstanding references to the swap chain's buffers before resizing.
+ CleanupRenderTarget();
+ g_pSwapChain->ResizeBuffers(0, 0, 0, DXGI_FORMAT_UNKNOWN, 0);
+ CreateRenderTarget();
+ }
+ }
+ // Start the Dear ImGui frame
+ ImGui_ImplDX11_NewFrame();
+ ImGui_ImplSDL2_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ const float clear_color_with_alpha[4] = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
+ g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
+ g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, clear_color_with_alpha);
+ ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
+ g_pSwapChain->Present(1, 0); // Present with vsync
+ //g_pSwapChain->Present(0, 0); // Present without vsync
+
+ return true;
+}
+
+// Helper functions to use DirectX11
bool CreateDeviceD3D(HWND hWnd)
{
// Setup swap chain
diff --git a/examples/example_sdl_opengl2/main.cpp b/examples/example_sdl_opengl2/main.cpp
index 3ca4d02..f3304bb 100644
--- a/examples/example_sdl_opengl2/main.cpp
+++ b/examples/example_sdl_opengl2/main.cpp
@@ -14,12 +14,16 @@
#include <SDL.h>
#include <SDL_opengl.h>
+// Data
+static SDL_Window* g_AppWindow = NULL;
+
+// Forward declarations of helper functions
+bool MainLoopStep();
+
// Main code
int main(int, char**)
{
// Setup SDL
- // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
- // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to the latest version of SDL is recommended!)
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
{
printf("Error: %s\n", SDL_GetError());
@@ -37,6 +41,7 @@
SDL_GLContext gl_context = SDL_GL_CreateContext(window);
SDL_GL_MakeCurrent(window, gl_context);
SDL_GL_SetSwapInterval(1); // Enable vsync
+ g_AppWindow = window;
// Setup Dear ImGui context
IMGUI_CHECKVERSION();
@@ -69,80 +74,11 @@
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
- // Our state
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
- bool done = false;
- while (!done)
+ while (true)
{
- // Poll and handle events (inputs, window resize, etc.)
- // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
- // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
- // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
- // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
- SDL_Event event;
- while (SDL_PollEvent(&event))
- {
- ImGui_ImplSDL2_ProcessEvent(&event);
- if (event.type == SDL_QUIT)
- done = true;
- if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
- done = true;
- }
-
- // Start the Dear ImGui frame
- ImGui_ImplOpenGL2_NewFrame();
- ImGui_ImplSDL2_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::Render();
- glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
- glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
- glClear(GL_COLOR_BUFFER_BIT);
- //glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
- ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
- SDL_GL_SwapWindow(window);
+ if (!MainLoopStep())
+ break;
}
// Cleanup
@@ -156,3 +92,82 @@
return 0;
}
+
+bool MainLoopStep()
+{
+ // Poll and handle SDL events (inputs, window resize, etc.)
+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+ SDL_Window* window = g_AppWindow;
+ SDL_Event event;
+ while (SDL_PollEvent(&event))
+ {
+ ImGui_ImplSDL2_ProcessEvent(&event);
+ if (event.type == SDL_QUIT)
+ return false;
+ if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
+ return false;
+ }
+
+ // Start the Dear ImGui frame
+ ImGuiIO& io = ImGui::GetIO();
+ ImGui_ImplOpenGL2_NewFrame();
+ ImGui_ImplSDL2_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
+ glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
+ glClear(GL_COLOR_BUFFER_BIT);
+ //glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
+ ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
+ SDL_GL_SwapWindow(window);
+
+ return true;
+}
diff --git a/examples/example_sdl_opengl3/main.cpp b/examples/example_sdl_opengl3/main.cpp
index 51436a2..df8a600 100644
--- a/examples/example_sdl_opengl3/main.cpp
+++ b/examples/example_sdl_opengl3/main.cpp
@@ -14,12 +14,16 @@
#include <SDL_opengl.h>
#endif
+// Data
+static SDL_Window* g_AppWindow = NULL;
+
+// Forward declarations of helper functions
+bool MainLoopStep();
+
// Main code
int main(int, char**)
{
// Setup SDL
- // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
- // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to the latest version of SDL is recommended!)
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
{
printf("Error: %s\n", SDL_GetError());
@@ -59,6 +63,7 @@
SDL_GLContext gl_context = SDL_GL_CreateContext(window);
SDL_GL_MakeCurrent(window, gl_context);
SDL_GL_SetSwapInterval(1); // Enable vsync
+ g_AppWindow = window;
// Setup Dear ImGui context
IMGUI_CHECKVERSION();
@@ -91,79 +96,11 @@
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
- // Our state
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
- bool done = false;
- while (!done)
+ while (true)
{
- // Poll and handle events (inputs, window resize, etc.)
- // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
- // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
- // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
- // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
- SDL_Event event;
- while (SDL_PollEvent(&event))
- {
- ImGui_ImplSDL2_ProcessEvent(&event);
- if (event.type == SDL_QUIT)
- done = true;
- if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
- done = true;
- }
-
- // Start the Dear ImGui frame
- ImGui_ImplOpenGL3_NewFrame();
- ImGui_ImplSDL2_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::Render();
- glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
- glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
- glClear(GL_COLOR_BUFFER_BIT);
- ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
- SDL_GL_SwapWindow(window);
+ if (!MainLoopStep())
+ break;
}
// Cleanup
@@ -177,3 +114,81 @@
return 0;
}
+
+bool MainLoopStep()
+{
+ // Poll and handle SDL events (inputs, window resize, etc.)
+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+ SDL_Window* window = g_AppWindow;
+ SDL_Event event;
+ while (SDL_PollEvent(&event))
+ {
+ ImGui_ImplSDL2_ProcessEvent(&event);
+ if (event.type == SDL_QUIT)
+ return false;
+ if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
+ return false;
+ }
+
+ // Start the Dear ImGui frame
+ ImGuiIO& io = ImGui::GetIO();
+ ImGui_ImplOpenGL3_NewFrame();
+ ImGui_ImplSDL2_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
+ glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
+ glClear(GL_COLOR_BUFFER_BIT);
+ ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+ SDL_GL_SwapWindow(window);
+
+ return true;
+}
diff --git a/examples/example_sdl_sdlrenderer/main.cpp b/examples/example_sdl_sdlrenderer/main.cpp
index 2ba7ec2..bb6c1e4 100644
--- a/examples/example_sdl_sdlrenderer/main.cpp
+++ b/examples/example_sdl_sdlrenderer/main.cpp
@@ -17,29 +17,34 @@
#error This backend requires SDL 2.0.17+ because of SDL_RenderGeometry() function
#endif
+// Data
+static SDL_Window* g_AppWindow = NULL;
+static SDL_Renderer* g_AppWindowRenderer = NULL;
+
+// Forward declarations of helper functions
+bool MainLoopStep();
+
// Main code
int main(int, char**)
{
// Setup SDL
- // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
- // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to the latest version of SDL is recommended!)
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
{
printf("Error: %s\n", SDL_GetError());
return -1;
}
- // Setup window
+ // Create window with SDL_Renderer graphics context
SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+SDL_Renderer example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
-
- // Setup SDL_Renderer instance
SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_ACCELERATED);
if (renderer == NULL)
{
SDL_Log("Error creating SDL_Renderer!");
return 0;
}
+ g_AppWindow = window;
+ g_AppWindowRenderer = renderer;
//SDL_RendererInfo info;
//SDL_GetRendererInfo(renderer, &info);
//SDL_Log("Current SDL_Renderer: %s", info.name);
@@ -75,79 +80,11 @@
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
- // Our state
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
- bool done = false;
- while (!done)
+ while (true)
{
- // Poll and handle events (inputs, window resize, etc.)
- // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
- // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
- // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
- // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
- SDL_Event event;
- while (SDL_PollEvent(&event))
- {
- ImGui_ImplSDL2_ProcessEvent(&event);
- if (event.type == SDL_QUIT)
- done = true;
- if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
- done = true;
- }
-
- // Start the Dear ImGui frame
- ImGui_ImplSDLRenderer_NewFrame();
- ImGui_ImplSDL2_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::Render();
- SDL_RenderSetScale(renderer, io.DisplayFramebufferScale.x, io.DisplayFramebufferScale.y);
- SDL_SetRenderDrawColor(renderer, (Uint8)(clear_color.x * 255), (Uint8)(clear_color.y * 255), (Uint8)(clear_color.z * 255), (Uint8)(clear_color.w * 255));
- SDL_RenderClear(renderer);
- ImGui_ImplSDLRenderer_RenderDrawData(ImGui::GetDrawData());
- SDL_RenderPresent(renderer);
+ if (!MainLoopStep())
+ break;
}
// Cleanup
@@ -161,3 +98,82 @@
return 0;
}
+
+bool MainLoopStep()
+{
+ // Poll and handle events (inputs, window resize, etc.)
+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+ SDL_Window* window = g_AppWindow;
+ SDL_Renderer* renderer = g_AppWindowRenderer;
+ SDL_Event event;
+ while (SDL_PollEvent(&event))
+ {
+ ImGui_ImplSDL2_ProcessEvent(&event);
+ if (event.type == SDL_QUIT)
+ return false;
+ if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
+ return false;
+ }
+
+ // Start the Dear ImGui frame
+ ImGuiIO& io = ImGui::GetIO();
+ ImGui_ImplSDLRenderer_NewFrame();
+ ImGui_ImplSDL2_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ SDL_RenderSetScale(renderer, io.DisplayFramebufferScale.x, io.DisplayFramebufferScale.y);
+ SDL_SetRenderDrawColor(renderer, (Uint8)(clear_color.x * 255), (Uint8)(clear_color.y * 255), (Uint8)(clear_color.z * 255), (Uint8)(clear_color.w * 255));
+ SDL_RenderClear(renderer);
+ ImGui_ImplSDLRenderer_RenderDrawData(ImGui::GetDrawData());
+ SDL_RenderPresent(renderer);
+
+ return true;
+}
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 45d555a..f1d404c 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -32,7 +32,7 @@
<Filter>imgui</Filter>
</ClCompile>
<ClCompile Include="..\..\imgui_tables.cpp">
- <Filter>sources</Filter>
+ <Filter>imgui</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
diff --git a/examples/example_sdl_vulkan/main.cpp b/examples/example_sdl_vulkan/main.cpp
index 5b0d84e..aaec504 100644
--- a/examples/example_sdl_vulkan/main.cpp
+++ b/examples/example_sdl_vulkan/main.cpp
@@ -23,6 +23,7 @@
#define IMGUI_VULKAN_DEBUG_REPORT
#endif
+// Data
static VkAllocationCallbacks* g_Allocator = NULL;
static VkInstance g_Instance = VK_NULL_HANDLE;
static VkPhysicalDevice g_PhysicalDevice = VK_NULL_HANDLE;
@@ -33,10 +34,14 @@
static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE;
+static SDL_Window* g_AppWindow = NULL;
static ImGui_ImplVulkanH_Window g_MainWindowData;
static uint32_t g_MinImageCount = 2;
static bool g_SwapChainRebuild = false;
+// Forward declarations of helper functions
+bool MainLoopStep();
+
static void check_vk_result(VkResult err)
{
if (err == 0)
@@ -339,6 +344,7 @@
wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores
}
+// Main code
int main(int, char**)
{
// Setup SDL
@@ -348,17 +354,16 @@
return -1;
}
- // Setup window
+ // Create window with Vulkan graphics context
SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_VULKAN | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+Vulkan example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
-
- // Setup Vulkan
uint32_t extensions_count = 0;
SDL_Vulkan_GetInstanceExtensions(window, &extensions_count, NULL);
const char** extensions = new const char*[extensions_count];
SDL_Vulkan_GetInstanceExtensions(window, &extensions_count, extensions);
SetupVulkan(extensions, extensions_count);
delete[] extensions;
+ g_AppWindow = window;
// Create Window Surface
VkSurfaceKHR surface;
@@ -450,99 +455,11 @@
ImGui_ImplVulkan_DestroyFontUploadObjects();
}
- // Our state
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
- bool done = false;
- while (!done)
+ while (true)
{
- // Poll and handle events (inputs, window resize, etc.)
- // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
- // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
- // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
- // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
- SDL_Event event;
- while (SDL_PollEvent(&event))
- {
- ImGui_ImplSDL2_ProcessEvent(&event);
- if (event.type == SDL_QUIT)
- done = true;
- if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
- done = true;
- }
-
- // Resize swap chain?
- if (g_SwapChainRebuild)
- {
- int width, height;
- SDL_GetWindowSize(window, &width, &height);
- if (width > 0 && height > 0)
- {
- ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
- ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
- g_MainWindowData.FrameIndex = 0;
- g_SwapChainRebuild = false;
- }
- }
-
- // Start the Dear ImGui frame
- ImGui_ImplVulkan_NewFrame();
- ImGui_ImplSDL2_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::Render();
- ImDrawData* draw_data = ImGui::GetDrawData();
- const bool is_minimized = (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f);
- if (!is_minimized)
- {
- wd->ClearValue.color.float32[0] = clear_color.x * clear_color.w;
- wd->ClearValue.color.float32[1] = clear_color.y * clear_color.w;
- wd->ClearValue.color.float32[2] = clear_color.z * clear_color.w;
- wd->ClearValue.color.float32[3] = clear_color.w;
- FrameRender(wd, draw_data);
- FramePresent(wd);
- }
+ if (!MainLoopStep())
+ break;
}
// Cleanup
@@ -560,3 +477,101 @@
return 0;
}
+
+bool MainLoopStep()
+{
+ // Poll and handle events (inputs, window resize, etc.)
+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+ SDL_Window* window = g_AppWindow;
+ SDL_Event event;
+ while (SDL_PollEvent(&event))
+ {
+ ImGui_ImplSDL2_ProcessEvent(&event);
+ if (event.type == SDL_QUIT)
+ return false;
+ if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
+ return false;
+ }
+
+ // Resize swap chain?
+ if (g_SwapChainRebuild)
+ {
+ int width, height;
+ SDL_GetWindowSize(window, &width, &height);
+ if (width > 0 && height > 0)
+ {
+ ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
+ ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
+ g_MainWindowData.FrameIndex = 0;
+ g_SwapChainRebuild = false;
+ }
+ }
+
+ // Start the Dear ImGui frame
+ ImGui_ImplVulkan_NewFrame();
+ ImGui_ImplSDL2_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ ImDrawData* draw_data = ImGui::GetDrawData();
+ const bool is_minimized = (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f);
+ if (!is_minimized)
+ {
+ ImGui_ImplVulkanH_Window* wd = &g_MainWindowData;
+ wd->ClearValue.color.float32[0] = clear_color.x * clear_color.w;
+ wd->ClearValue.color.float32[1] = clear_color.y * clear_color.w;
+ wd->ClearValue.color.float32[2] = clear_color.z * clear_color.w;
+ wd->ClearValue.color.float32[3] = clear_color.w;
+ FrameRender(wd, draw_data);
+ FramePresent(wd);
+ }
+
+ return true;
+}
diff --git a/examples/example_win32_directx10/main.cpp b/examples/example_win32_directx10/main.cpp
index 4fcc76c..06f2040 100644
--- a/examples/example_win32_directx10/main.cpp
+++ b/examples/example_win32_directx10/main.cpp
@@ -15,6 +15,7 @@
static ID3D10RenderTargetView* g_mainRenderTargetView = NULL;
// Forward declarations of helper functions
+bool MainLoopStep();
bool CreateDeviceD3D(HWND hWnd);
void CleanupDeviceD3D();
void CreateRenderTarget();
@@ -73,81 +74,14 @@
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
- // Our state
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
- bool done = false;
- while (!done)
+ while (true)
{
- // Poll and handle messages (inputs, window resize, etc.)
- // See the WndProc() function below for our to dispatch events to the Win32 backend.
- MSG msg;
- while (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
- {
- ::TranslateMessage(&msg);
- ::DispatchMessage(&msg);
- if (msg.message == WM_QUIT)
- done = true;
- }
- if (done)
+ if (!MainLoopStep())
break;
-
- // Start the Dear ImGui frame
- ImGui_ImplDX10_NewFrame();
- ImGui_ImplWin32_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::Render();
- const float clear_color_with_alpha[4] = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
- g_pd3dDevice->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
- g_pd3dDevice->ClearRenderTargetView(g_mainRenderTargetView, clear_color_with_alpha);
- ImGui_ImplDX10_RenderDrawData(ImGui::GetDrawData());
-
- g_pSwapChain->Present(1, 0); // Present with vsync
- //g_pSwapChain->Present(0, 0); // Present without vsync
}
+ // Cleanup
ImGui_ImplDX10_Shutdown();
ImGui_ImplWin32_Shutdown();
ImGui::DestroyContext();
@@ -159,6 +93,83 @@
return 0;
}
+bool MainLoopStep()
+{
+ // Poll and handle messages (inputs, window resize, etc.)
+ // See the WndProc() function below where we dispatch events to the imgui_impl_win32 backend.
+ bool done = false;
+ MSG msg;
+ while (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+ {
+ ::TranslateMessage(&msg);
+ ::DispatchMessage(&msg);
+ if (msg.message == WM_QUIT)
+ done = true;
+ }
+ if (done)
+ return false;
+
+ // Start the Dear ImGui frame
+ ImGui_ImplDX10_NewFrame();
+ ImGui_ImplWin32_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ const float clear_color_with_alpha[4] = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
+ g_pd3dDevice->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
+ g_pd3dDevice->ClearRenderTargetView(g_mainRenderTargetView, clear_color_with_alpha);
+ ImGui_ImplDX10_RenderDrawData(ImGui::GetDrawData());
+
+ g_pSwapChain->Present(1, 0); // Present with vsync
+ //g_pSwapChain->Present(0, 0); // Present without vsync
+
+ return true;
+}
+
// Helper functions
bool CreateDeviceD3D(HWND hWnd)
diff --git a/examples/example_win32_directx11/main.cpp b/examples/example_win32_directx11/main.cpp
index f1a0335..5b3dfee 100644
--- a/examples/example_win32_directx11/main.cpp
+++ b/examples/example_win32_directx11/main.cpp
@@ -15,6 +15,7 @@
static ID3D11RenderTargetView* g_mainRenderTargetView = NULL;
// Forward declarations of helper functions
+bool MainLoopStep();
bool CreateDeviceD3D(HWND hWnd);
void CleanupDeviceD3D();
void CreateRenderTarget();
@@ -73,79 +74,11 @@
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
- // Our state
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
- bool done = false;
- while (!done)
+ while (true)
{
- // Poll and handle messages (inputs, window resize, etc.)
- // See the WndProc() function below for our to dispatch events to the Win32 backend.
- MSG msg;
- while (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
- {
- ::TranslateMessage(&msg);
- ::DispatchMessage(&msg);
- if (msg.message == WM_QUIT)
- done = true;
- }
- if (done)
+ if (!MainLoopStep())
break;
-
- // Start the Dear ImGui frame
- ImGui_ImplDX11_NewFrame();
- ImGui_ImplWin32_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::Render();
- const float clear_color_with_alpha[4] = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
- g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
- g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, clear_color_with_alpha);
- ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
-
- g_pSwapChain->Present(1, 0); // Present with vsync
- //g_pSwapChain->Present(0, 0); // Present without vsync
}
// Cleanup
@@ -160,6 +93,82 @@
return 0;
}
+bool MainLoopStep()
+{
+ // Poll and handle messages (inputs, window resize, etc.)
+ // See the WndProc() function below where we dispatch events to the imgui_impl_win32 backend.
+ bool done = false;
+ MSG msg;
+ while (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+ {
+ ::TranslateMessage(&msg);
+ ::DispatchMessage(&msg);
+ if (msg.message == WM_QUIT)
+ done = true;
+ }
+ if (done)
+ return false;
+
+ // Start the Dear ImGui frame
+ ImGui_ImplDX11_NewFrame();
+ ImGui_ImplWin32_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ const float clear_color_with_alpha[4] = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
+ g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
+ g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, clear_color_with_alpha);
+ ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
+
+ g_pSwapChain->Present(1, 0); // Present with vsync
+ //g_pSwapChain->Present(0, 0); // Present without vsync
+ return true;
+}
+
// Helper functions
bool CreateDeviceD3D(HWND hWnd)
diff --git a/examples/example_win32_directx12/main.cpp b/examples/example_win32_directx12/main.cpp
index 961d343..4102179 100644
--- a/examples/example_win32_directx12/main.cpp
+++ b/examples/example_win32_directx12/main.cpp
@@ -48,6 +48,7 @@
static D3D12_CPU_DESCRIPTOR_HANDLE g_mainRenderTargetDescriptor[NUM_BACK_BUFFERS] = {};
// Forward declarations of helper functions
+bool MainLoopStep();
bool CreateDeviceD3D(HWND hWnd);
void CleanupDeviceD3D();
void CreateRenderTarget();
@@ -111,112 +112,15 @@
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
- // Our state
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
- bool done = false;
- while (!done)
+ while (true)
{
- // Poll and handle messages (inputs, window resize, etc.)
- // See the WndProc() function below for our to dispatch events to the Win32 backend.
- MSG msg;
- while (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
- {
- ::TranslateMessage(&msg);
- ::DispatchMessage(&msg);
- if (msg.message == WM_QUIT)
- done = true;
- }
- if (done)
+ if (!MainLoopStep())
break;
-
- // Start the Dear ImGui frame
- ImGui_ImplDX12_NewFrame();
- ImGui_ImplWin32_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::Render();
-
- FrameContext* frameCtx = WaitForNextFrameResources();
- UINT backBufferIdx = g_pSwapChain->GetCurrentBackBufferIndex();
- frameCtx->CommandAllocator->Reset();
-
- D3D12_RESOURCE_BARRIER barrier = {};
- barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
- barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
- barrier.Transition.pResource = g_mainRenderTargetResource[backBufferIdx];
- barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
- barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_PRESENT;
- barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_RENDER_TARGET;
- g_pd3dCommandList->Reset(frameCtx->CommandAllocator, NULL);
- g_pd3dCommandList->ResourceBarrier(1, &barrier);
-
- // Render Dear ImGui graphics
- const float clear_color_with_alpha[4] = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
- g_pd3dCommandList->ClearRenderTargetView(g_mainRenderTargetDescriptor[backBufferIdx], clear_color_with_alpha, 0, NULL);
- g_pd3dCommandList->OMSetRenderTargets(1, &g_mainRenderTargetDescriptor[backBufferIdx], FALSE, NULL);
- g_pd3dCommandList->SetDescriptorHeaps(1, &g_pd3dSrvDescHeap);
- ImGui_ImplDX12_RenderDrawData(ImGui::GetDrawData(), g_pd3dCommandList);
- barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_RENDER_TARGET;
- barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_PRESENT;
- g_pd3dCommandList->ResourceBarrier(1, &barrier);
- g_pd3dCommandList->Close();
-
- g_pd3dCommandQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*)&g_pd3dCommandList);
-
- g_pSwapChain->Present(1, 0); // Present with vsync
- //g_pSwapChain->Present(0, 0); // Present without vsync
-
- UINT64 fenceValue = g_fenceLastSignaledValue + 1;
- g_pd3dCommandQueue->Signal(g_fence, fenceValue);
- g_fenceLastSignaledValue = fenceValue;
- frameCtx->FenceValue = fenceValue;
}
- WaitForLastSubmittedFrame();
-
// Cleanup
+ WaitForLastSubmittedFrame();
ImGui_ImplDX12_Shutdown();
ImGui_ImplWin32_Shutdown();
ImGui::DestroyContext();
@@ -228,6 +132,111 @@
return 0;
}
+bool MainLoopStep()
+{
+ // Poll and handle messages (inputs, window resize, etc.)
+ // See the WndProc() function below where we dispatch events to the imgui_impl_win32 backend.
+ bool done = false;
+ MSG msg;
+ while (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+ {
+ ::TranslateMessage(&msg);
+ ::DispatchMessage(&msg);
+ if (msg.message == WM_QUIT)
+ done = true;
+ }
+ if (done)
+ return false;
+
+ // Start the Dear ImGui frame
+ ImGui_ImplDX12_NewFrame();
+ ImGui_ImplWin32_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+
+ FrameContext* frameCtx = WaitForNextFrameResources();
+ UINT backBufferIdx = g_pSwapChain->GetCurrentBackBufferIndex();
+ frameCtx->CommandAllocator->Reset();
+
+ D3D12_RESOURCE_BARRIER barrier = {};
+ barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
+ barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
+ barrier.Transition.pResource = g_mainRenderTargetResource[backBufferIdx];
+ barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
+ barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_PRESENT;
+ barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_RENDER_TARGET;
+ g_pd3dCommandList->Reset(frameCtx->CommandAllocator, NULL);
+ g_pd3dCommandList->ResourceBarrier(1, &barrier);
+
+ // Render Dear ImGui graphics
+ const float clear_color_with_alpha[4] = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
+ g_pd3dCommandList->ClearRenderTargetView(g_mainRenderTargetDescriptor[backBufferIdx], clear_color_with_alpha, 0, NULL);
+ g_pd3dCommandList->OMSetRenderTargets(1, &g_mainRenderTargetDescriptor[backBufferIdx], FALSE, NULL);
+ g_pd3dCommandList->SetDescriptorHeaps(1, &g_pd3dSrvDescHeap);
+ ImGui_ImplDX12_RenderDrawData(ImGui::GetDrawData(), g_pd3dCommandList);
+ barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_RENDER_TARGET;
+ barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_PRESENT;
+ g_pd3dCommandList->ResourceBarrier(1, &barrier);
+ g_pd3dCommandList->Close();
+
+ g_pd3dCommandQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*)&g_pd3dCommandList);
+
+ g_pSwapChain->Present(1, 0); // Present with vsync
+ //g_pSwapChain->Present(0, 0); // Present without vsync
+
+ UINT64 fenceValue = g_fenceLastSignaledValue + 1;
+ g_pd3dCommandQueue->Signal(g_fence, fenceValue);
+ g_fenceLastSignaledValue = fenceValue;
+ frameCtx->FenceValue = fenceValue;
+
+ return true;
+}
+
// Helper functions
bool CreateDeviceD3D(HWND hWnd)
diff --git a/examples/example_win32_directx9/main.cpp b/examples/example_win32_directx9/main.cpp
index 494a94b..19a883d 100644
--- a/examples/example_win32_directx9/main.cpp
+++ b/examples/example_win32_directx9/main.cpp
@@ -14,6 +14,7 @@
static D3DPRESENT_PARAMETERS g_d3dpp = {};
// Forward declarations of helper functions
+bool MainLoopStep();
bool CreateDeviceD3D(HWND hWnd);
void CleanupDeviceD3D();
void ResetDevice();
@@ -71,90 +72,14 @@
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
- // Our state
- bool show_demo_window = true;
- bool show_another_window = false;
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
// Main loop
- bool done = false;
- while (!done)
+ while (true)
{
- // Poll and handle messages (inputs, window resize, etc.)
- // See the WndProc() function below for our to dispatch events to the Win32 backend.
- MSG msg;
- while (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
- {
- ::TranslateMessage(&msg);
- ::DispatchMessage(&msg);
- if (msg.message == WM_QUIT)
- done = true;
- }
- if (done)
+ if (!MainLoopStep())
break;
-
- // Start the Dear ImGui frame
- ImGui_ImplDX9_NewFrame();
- ImGui_ImplWin32_NewFrame();
- ImGui::NewFrame();
-
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
- if (show_demo_window)
- ImGui::ShowDemoWindow(&show_demo_window);
-
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
- {
- static float f = 0.0f;
- static int counter = 0;
-
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
-
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
- ImGui::Checkbox("Another Window", &show_another_window);
-
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
- counter++;
- ImGui::SameLine();
- ImGui::Text("counter = %d", counter);
-
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
- ImGui::End();
- }
-
- // 3. Show another simple window.
- if (show_another_window)
- {
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
- ImGui::Text("Hello from another window!");
- if (ImGui::Button("Close Me"))
- show_another_window = false;
- ImGui::End();
- }
-
- // Rendering
- ImGui::EndFrame();
- g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, FALSE);
- g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, FALSE);
- g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, FALSE);
- D3DCOLOR clear_col_dx = D3DCOLOR_RGBA((int)(clear_color.x*clear_color.w*255.0f), (int)(clear_color.y*clear_color.w*255.0f), (int)(clear_color.z*clear_color.w*255.0f), (int)(clear_color.w*255.0f));
- g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, clear_col_dx, 1.0f, 0);
- if (g_pd3dDevice->BeginScene() >= 0)
- {
- ImGui::Render();
- ImGui_ImplDX9_RenderDrawData(ImGui::GetDrawData());
- g_pd3dDevice->EndScene();
- }
- HRESULT result = g_pd3dDevice->Present(NULL, NULL, NULL, NULL);
-
- // Handle loss of D3D9 device
- if (result == D3DERR_DEVICELOST && g_pd3dDevice->TestCooperativeLevel() == D3DERR_DEVICENOTRESET)
- ResetDevice();
}
+ // Cleanup
ImGui_ImplDX9_Shutdown();
ImGui_ImplWin32_Shutdown();
ImGui::DestroyContext();
@@ -166,6 +91,92 @@
return 0;
}
+bool MainLoopStep()
+{
+ // Poll and handle messages (inputs, window resize, etc.)
+ // See the WndProc() function below where we dispatch events to the imgui_impl_win32 backend.
+ bool done = false;
+ MSG msg;
+ while (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+ {
+ ::TranslateMessage(&msg);
+ ::DispatchMessage(&msg);
+ if (msg.message == WM_QUIT)
+ done = true;
+ }
+ if (done)
+ return false;
+
+ // Start the Dear ImGui frame
+ ImGui_ImplDX9_NewFrame();
+ ImGui_ImplWin32_NewFrame();
+ ImGui::NewFrame();
+
+ // Our state
+ // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
+ static bool show_demo_window = true;
+ static bool show_another_window = false;
+ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::EndFrame();
+ g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, FALSE);
+ g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, FALSE);
+ g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, FALSE);
+ D3DCOLOR clear_col_dx = D3DCOLOR_RGBA((int)(clear_color.x * clear_color.w * 255.0f), (int)(clear_color.y * clear_color.w * 255.0f), (int)(clear_color.z * clear_color.w * 255.0f), (int)(clear_color.w * 255.0f));
+ g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, clear_col_dx, 1.0f, 0);
+ if (g_pd3dDevice->BeginScene() >= 0)
+ {
+ ImGui::Render();
+ ImGui_ImplDX9_RenderDrawData(ImGui::GetDrawData());
+ g_pd3dDevice->EndScene();
+ }
+ HRESULT result = g_pd3dDevice->Present(NULL, NULL, NULL, NULL);
+
+ // Handle loss of D3D9 device
+ if (result == D3DERR_DEVICELOST && g_pd3dDevice->TestCooperativeLevel() == D3DERR_DEVICENOTRESET)
+ ResetDevice();
+
+ return true;
+}
+
// Helper functions
bool CreateDeviceD3D(HWND hWnd)
