diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml index 5bbaefd1a..4e276e1de 100644 --- a/.github/workflows/build.yml +++ b/.github/workflows/build.yml @@ -601,6 +601,10 @@ jobs: run: xcodebuild -project examples/example_apple_opengl2/example_apple_opengl2.xcodeproj -target example_osx_opengl2 if: github.event_name == 'workflow_run' + - name: Build macOS example_apple_opengl3 + run: xcodebuild -project examples/example_apple_opengl3/example_apple_opengl3.xcodeproj -target example_osx_opengl3 + if: github.event_name == 'workflow_run' + Build-iOS: runs-on: macos-14 name: Build - iOS diff --git a/.gitignore b/.gitignore index 250e7eed5..009e61ede 100644 --- a/.gitignore +++ b/.gitignore @@ -67,6 +67,7 @@ cmake-build-* ## Unix executables from our example Makefiles examples/example_apple_metal/example_apple_metal examples/example_apple_opengl2/example_apple_opengl2 +examples/example_apple_opengl3/example_apple_opengl3 examples/example_glfw_metal/example_glfw_metal examples/example_glfw_opengl2/example_glfw_opengl2 examples/example_glfw_opengl3/example_glfw_opengl3 diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt index 2101df990..716cd3fc7 100644 --- a/docs/CHANGELOG.txt +++ b/docs/CHANGELOG.txt @@ -67,6 +67,7 @@ Other Changes: - Examples: - SDL2+Metal: create Metal context without using a SDL_Renderer. - QNX+OpenGL3, QNX+Vulkan: added QNX Screen examples. (#9492) [@mgorchak-blackberry] + - OSX+OpenGL3: added example_apple_opengl3/ (OSX/Cocoa + OpenGL 3.2 Core profile). ----------------------------------------------------------------------- diff --git a/docs/EXAMPLES.md b/docs/EXAMPLES.md index 89e9bd0df..231fe7f93 100644 --- a/docs/EXAMPLES.md +++ b/docs/EXAMPLES.md @@ -70,8 +70,10 @@ OSX & iOS + Metal4 example, Mac only.
[example_apple_opengl2/](https://github.com/ocornut/imgui/blob/master/examples/example_apple_opengl2/)
OSX + OpenGL2 example.
= main.mm + imgui_impl_osx.mm + imgui_impl_opengl2.cpp
-(NB: imgui_impl_osx.mm is currently not as feature complete as other platforms backends. - You may prefer to use the GLFW Or SDL backends, which will also support Windows and Linux.) + +[example_apple_opengl3/](https://github.com/ocornut/imgui/blob/master/examples/example_apple_opengl3/)
+OSX + OpenGL3 example.
+= main.mm + imgui_impl_osx.mm + imgui_impl_opengl3.cpp
[example_glfw_wgpu/](https://github.com/ocornut/imgui/blob/master/examples/example_glfw_wgpu/)
GLFW + WebGPU example. Supports Emscripten (web), Dawn (native), WGPU (native).
diff --git a/examples/example_apple_opengl3/Makefile b/examples/example_apple_opengl3/Makefile new file mode 100644 index 000000000..c9f9d44d3 --- /dev/null +++ b/examples/example_apple_opengl3/Makefile @@ -0,0 +1,21 @@ +# Makefile for example_apple_opengl3, for macOS only (**not iOS**) +CXX = clang++ +EXE = example_apple_opengl3 +IMGUI_DIR = ../../ +SOURCES = main.mm +SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp +SOURCES += $(IMGUI_DIR)/backends/imgui_impl_osx.mm $(IMGUI_DIR)/backends/imgui_impl_opengl3.cpp + +CXXFLAGS = -std=c++11 -ObjC++ -fobjc-arc -Wall -Wextra -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends +FRAMEWORKS = -framework Cocoa -framework OpenGL -framework GameController + +all: $(EXE) + +$(EXE): $(SOURCES) + $(CXX) $(CXXFLAGS) $(SOURCES) -o $(EXE) $(FRAMEWORKS) + +run: all + ./$(EXE) + +clean: + rm -f $(EXE) *.o diff --git a/examples/example_apple_opengl3/example_apple_opengl3.xcodeproj/project.pbxproj b/examples/example_apple_opengl3/example_apple_opengl3.xcodeproj/project.pbxproj new file mode 100644 index 000000000..50ee35fd9 --- /dev/null +++ b/examples/example_apple_opengl3/example_apple_opengl3.xcodeproj/project.pbxproj @@ -0,0 +1,334 @@ +// !$*UTF8*$! +{ + archiveVersion = 1; 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+} +@end + +@implementation AppView + +-(void)prepareOpenGL +{ + [super prepareOpenGL]; + +#ifndef DEBUG + GLint swapInterval = 1; + [[self openGLContext] setValues:&swapInterval forParameter:NSOpenGLContextParameterSwapInterval]; + if (swapInterval == 0) + NSLog(@"Error: Cannot set swap interval."); +#endif +} + +-(void)initialize +{ + // Setup Dear ImGui context + // FIXME: This example doesn't have proper cleanup... + IMGUI_CHECKVERSION(); + ImGui::CreateContext(); + ImGuiIO& io = ImGui::GetIO(); (void)io; + io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls + io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls + + // Setup Dear ImGui style + ImGui::StyleColorsDark(); + //ImGui::StyleColorsLight(); + + // Setup Platform/Renderer backends + [[self openGLContext] makeCurrentContext]; // ImGui_ImplOpenGL3_Init() requires a current GL context. + ImGui_ImplOSX_Init(self); + ImGui_ImplOpenGL3_Init(); + + // Load Fonts + // - If fonts are not explicitly loaded, Dear ImGui will select an embedded font: either AddFontDefaultVector() or AddFontDefaultBitmap(). + // This selection is based on (style.FontSizeBase * style.FontScaleMain * style.FontScaleDpi) reaching a small threshold. + // - You can load multiple fonts and use ImGui::PushFont()/PopFont() to select them. + // - If a file cannot be loaded, AddFont functions will return a nullptr. Please handle those errors in your code (e.g. use an assertion, display an error and quit). + // - Read 'docs/FONTS.md' for more instructions and details. + // - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use FreeType for higher quality font rendering. + // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ ! + //style.FontSizeBase = 20.0f; + //io.Fonts->AddFontDefaultVector(); + //io.Fonts->AddFontDefaultBitmap(); + //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf"); + //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf"); + //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf"); + //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf"); + //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf"); + //IM_ASSERT(font != nullptr); +} + +-(void)updateAndDrawDemoView +{ + // Start the Dear ImGui frame + ImGuiIO& io = ImGui::GetIO(); + ImGui_ImplOpenGL3_NewFrame(); + ImGui_ImplOSX_NewFrame(self); + ImGui::NewFrame(); + + // Our state (make them static = more or less global) as a convenience to keep the example terse. + 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 / io.Framerate, io.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(); + + [[self openGLContext] makeCurrentContext]; + GLsizei width = (GLsizei)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x); + GLsizei height = (GLsizei)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y); + glViewport(0, 0, width, height); + 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(draw_data); + + // Present + [[self openGLContext] flushBuffer]; + + if (!animationTimer) + animationTimer = [NSTimer scheduledTimerWithTimeInterval:0.017 target:self selector:@selector(animationTimerFired:) userInfo:nil repeats:YES]; +} + +-(void)reshape { [super reshape]; [[self openGLContext] update]; [self updateAndDrawDemoView]; } +-(void)drawRect:(NSRect)bounds { [self updateAndDrawDemoView]; } +-(void)animationTimerFired:(NSTimer*)timer { [self setNeedsDisplay:YES]; } +-(void)dealloc { animationTimer = nil; } + +@end + +//----------------------------------------------------------------------------------- +// AppDelegate +//----------------------------------------------------------------------------------- + +@interface AppDelegate : NSObject +@property (nonatomic, readonly) NSWindow* window; +@end + +@implementation AppDelegate +@synthesize window = _window; + +-(BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)theApplication +{ + return YES; +} + +-(NSWindow*)window +{ + if (_window != nil) + return _window; + + NSRect viewRect = NSMakeRect(100.0, 100.0, 100.0 + 1280.0, 100 + 800.0); + + _window = [[NSWindow alloc] initWithContentRect:viewRect styleMask:NSWindowStyleMaskTitled|NSWindowStyleMaskMiniaturizable|NSWindowStyleMaskResizable|NSWindowStyleMaskClosable backing:NSBackingStoreBuffered defer:YES]; + [_window setTitle:@"Dear ImGui OSX+OpenGL3 Example"]; + [_window setAcceptsMouseMovedEvents:YES]; + [_window setOpaque:YES]; + [_window makeKeyAndOrderFront:NSApp]; + + return _window; +} + +-(void)setupMenu +{ + NSMenu* mainMenuBar = [[NSMenu alloc] init]; + NSMenu* appMenu; + NSMenuItem* menuItem; + + appMenu = [[NSMenu alloc] initWithTitle:@"Dear ImGui OSX+OpenGL3 Example"]; + menuItem = [appMenu addItemWithTitle:@"Quit Dear ImGui OSX+OpenGL3 Example" action:@selector(terminate:) keyEquivalent:@"q"]; + [menuItem setKeyEquivalentModifierMask:NSEventModifierFlagCommand]; + + menuItem = [[NSMenuItem alloc] init]; + [menuItem setSubmenu:appMenu]; + + [mainMenuBar addItem:menuItem]; + + appMenu = nil; + [NSApp setMainMenu:mainMenuBar]; +} + +-(void)dealloc +{ + _window = nil; +} + +-(void)applicationDidFinishLaunching:(NSNotification *)aNotification +{ + // Make the application a foreground application (else it won't receive keyboard events) + ProcessSerialNumber psn = {0, kCurrentProcess}; + TransformProcessType(&psn, kProcessTransformToForegroundApplication); + + // Menu + [self setupMenu]; + + NSOpenGLPixelFormatAttribute attrs[] = + { + NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion3_2Core, + NSOpenGLPFADoubleBuffer, + NSOpenGLPFADepthSize, 32, + 0 + }; + + NSOpenGLPixelFormat* format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs]; + AppView* view = [[AppView alloc] initWithFrame:self.window.frame pixelFormat:format]; + format = nil; +#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1070 + if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6) + [view setWantsBestResolutionOpenGLSurface:YES]; +#endif // MAC_OS_X_VERSION_MAX_ALLOWED >= 1070 + [self.window setContentView:view]; + + if ([view openGLContext] == nil) + NSLog(@"No OpenGL Context!"); + + [view initialize]; +} + +@end + +//----------------------------------------------------------------------------------- +// Application main() function +//----------------------------------------------------------------------------------- + +int main(int argc, const char* argv[]) +{ + @autoreleasepool + { + NSApp = [NSApplication sharedApplication]; + AppDelegate* delegate = [[AppDelegate alloc] init]; + [[NSApplication sharedApplication] setDelegate:delegate]; + [NSApp run]; + } + return NSApplicationMain(argc, argv); +}