mirror of
https://github.com/wheremyfoodat/Panda3DS.git
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[Qt] Initial Imgui integration
This commit is contained in:
wheremyfoodat
parent
8ff2d7f9b2
commit
918645479a
211 changed files with 49460 additions and 21918 deletions
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@ -23,15 +23,18 @@ SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui
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SOURCES += $(IMGUI_DIR)/backends/imgui_impl_glfw.cpp $(IMGUI_DIR)/backends/imgui_impl_wgpu.cpp
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OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
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UNAME_S := $(shell uname -s)
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CPPFLAGS =
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LDFLAGS =
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EMS =
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##---------------------------------------------------------------------
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## EMSCRIPTEN OPTIONS
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##---------------------------------------------------------------------
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EMS += -s USE_GLFW=3 -s USE_WEBGPU=1 -s WASM=1
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EMS += -s ALLOW_MEMORY_GROWTH=1
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EMS += -s DISABLE_EXCEPTION_CATCHING=1 -s NO_EXIT_RUNTIME=0
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EMS += -s ASSERTIONS=1
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# ("EMS" options gets added to both CPPFLAGS and LDFLAGS, whereas some options are for linker only)
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EMS += -s DISABLE_EXCEPTION_CATCHING=1
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LDFLAGS += -s USE_GLFW=3 -s USE_WEBGPU=1
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LDFLAGS += -s WASM=1 -s ALLOW_MEMORY_GROWTH=1 -s NO_EXIT_RUNTIME=0 -s ASSERTIONS=1
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# Emscripten allows preloading a file or folder to be accessible at runtime.
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# The Makefile for this example project suggests embedding the misc/fonts/ folder into our application, it will then be accessible as "/fonts"
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@ -39,7 +42,8 @@ EMS += -s ASSERTIONS=1
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# (Default value is 0. Set to 1 to enable file-system and include the misc/fonts/ folder as part of the build.)
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USE_FILE_SYSTEM ?= 0
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ifeq ($(USE_FILE_SYSTEM), 0)
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EMS += -s NO_FILESYSTEM=1 -DIMGUI_DISABLE_FILE_FUNCTIONS
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LDFLAGS += -s NO_FILESYSTEM=1
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CPPFLAGS += -DIMGUI_DISABLE_FILE_FUNCTIONS
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endif
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ifeq ($(USE_FILE_SYSTEM), 1)
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LDFLAGS += --no-heap-copy --preload-file ../../misc/fonts@/fonts
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@ -49,12 +53,11 @@ endif
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## FINAL BUILD FLAGS
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##---------------------------------------------------------------------
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CPPFLAGS = -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends
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CPPFLAGS += -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends
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#CPPFLAGS += -g
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CPPFLAGS += -Wall -Wformat -Os
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CPPFLAGS += $(EMS)
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LIBS += $(EMS)
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CPPFLAGS += -Wall -Wformat -Os $(EMS)
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#LDFLAGS += --shell-file shell_minimal.html
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LDFLAGS += $(EMS)
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##---------------------------------------------------------------------
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## BUILD RULES
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@ -79,7 +82,7 @@ serve: all
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python3 -m http.server -d $(WEB_DIR)
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$(EXE): $(OBJS) $(WEB_DIR)
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$(CXX) -o $@ $(OBJS) $(LIBS) $(LDFLAGS)
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$(CXX) -o $@ $(OBJS) $(LDFLAGS)
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clean:
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rm -f $(EXE) $(OBJS) $(WEB_DIR)/*.js $(WEB_DIR)/*.wasm $(WEB_DIR)/*.wasm.pre
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@ -1,10 +1,24 @@
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# How to Build
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## How to Build
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- You need to install Emscripten from https://emscripten.org/docs/getting_started/downloads.html, and have the environment variables set, as described in https://emscripten.org/docs/getting_started/downloads.html#installation-instructions
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- Depending on your configuration, in Windows you may need to run `emsdk/emsdk_env.bat` in your console to access the Emscripten command-line tools.
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- Then build using `make` while in the `example_emscripten_wgpu/` directory.
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- You may also refer to our [Continuous Integration setup](https://github.com/ocornut/imgui/tree/master/.github/workflows) for Emscripten setup.
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- Requires Emscripten 2.0.10 (December 2020) due to GLFW adaptations
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- Then build using `make -f Makefile.emscripten` while in the `example_emscripten_wgpu/` directory.
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- Requires recent Emscripten as WGPU is still a work-in-progress API.
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## How to Run
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To run on a local machine:
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- Make sure your browse supports WGPU and it is enabled. WGPU is still WIP not enabled by default in most browser.
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- `make serve` will use Python3 to spawn a local webserver, you can then browse http://localhost:8000 to access your build.
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- Otherwise, generally you will need a local webserver:
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- Quoting [https://emscripten.org/docs/getting_started](https://emscripten.org/docs/getting_started/Tutorial.html#generating-html):<br>
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_"Unfortunately several browsers (including Chrome, Safari, and Internet Explorer) do not support file:// [XHR](https://emscripten.org/docs/site/glossary.html#term-xhr) requests, and can’t load extra files needed by the HTML (like a .wasm file, or packaged file data as mentioned lower down). For these browsers you’ll need to serve the files using a [local webserver](https://emscripten.org/docs/getting_started/FAQ.html#faq-local-webserver) and then open http://localhost:8000/hello.html."_
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- Emscripten SDK has a handy `emrun` command: `emrun web/example_emscripten_opengl3.html --browser firefox` which will spawn a temporary local webserver (in Firefox). See https://emscripten.org/docs/compiling/Running-html-files-with-emrun.html for details.
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- You may use Python 3 builtin webserver: `python -m http.server -d web` (this is what `make serve` uses).
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- You may use Python 2 builtin webserver: `cd web && python -m SimpleHTTPServer`.
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- If you are accessing the files over a network, certain browsers, such as Firefox, will restrict Gamepad API access to secure contexts only (e.g. https only).
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@ -1,236 +1,48 @@
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// Dear ImGui: standalone example application for Emscripten, using GLFW + WebGPU
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// (Emscripten is a C++-to-javascript compiler, used to publish executables for the web. See https://emscripten.org/)
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// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
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// Read online: https://github.com/ocornut/imgui/tree/master/docs
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// Learn about Dear ImGui:
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// - FAQ https://dearimgui.com/faq
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// - Getting Started https://dearimgui.com/getting-started
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// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
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// - Introduction, links and more at the top of imgui.cpp
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#include "imgui.h"
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#include "imgui_impl_glfw.h"
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#include "imgui_impl_wgpu.h"
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#include <stdio.h>
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#ifdef __EMSCRIPTEN__
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#include <emscripten.h>
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#include <emscripten/html5.h>
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#include <emscripten/html5_webgpu.h>
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#endif
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#include <GLFW/glfw3.h>
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#include <webgpu/webgpu.h>
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#include <webgpu/webgpu_cpp.h>
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// Global WebGPU required states
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static WGPUDevice wgpu_device = NULL;
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static WGPUSurface wgpu_surface = NULL;
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static WGPUSwapChain wgpu_swap_chain = NULL;
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static int wgpu_swap_chain_width = 0;
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static int wgpu_swap_chain_height = 0;
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// States tracked across render frames
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static bool show_demo_window = true;
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static bool show_another_window = false;
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static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
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// Forward declarations
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static bool init_wgpu();
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static void main_loop(void* window);
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static void print_glfw_error(int error, const char* description);
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static void print_wgpu_error(WGPUErrorType error_type, const char* message, void*);
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int main(int, char**)
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{
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glfwSetErrorCallback(print_glfw_error);
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if (!glfwInit())
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return 1;
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// Make sure GLFW does not initialize any graphics context.
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// This needs to be done explicitly later
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glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
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GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+WebGPU example", NULL, NULL);
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if (!window)
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{
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glfwTerminate();
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return 1;
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}
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// Initialize the WebGPU environment
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if (!init_wgpu())
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{
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if (window)
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glfwDestroyWindow(window);
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glfwTerminate();
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return 1;
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}
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glfwShowWindow(window);
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// Setup Dear ImGui context
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IMGUI_CHECKVERSION();
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ImGui::CreateContext();
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ImGuiIO& io = ImGui::GetIO(); (void)io;
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//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
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//io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
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// For an Emscripten build we are disabling file-system access, so let's not attempt to do a fopen() of the imgui.ini file.
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// You may manually call LoadIniSettingsFromMemory() to load settings from your own storage.
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io.IniFilename = NULL;
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// Setup Dear ImGui style
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ImGui::StyleColorsDark();
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//ImGui::StyleColorsClassic();
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// Setup Platform/Renderer backends
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ImGui_ImplGlfw_InitForOther(window, true);
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ImGui_ImplWGPU_Init(wgpu_device, 3, WGPUTextureFormat_RGBA8Unorm);
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// Load Fonts
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// - 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.
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// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
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// - 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).
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// - 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.
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// - Read 'docs/FONTS.md' for more instructions and details.
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// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
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// - Emscripten allows preloading a file or folder to be accessible at runtime. See Makefile for details.
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//io.Fonts->AddFontDefault();
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#ifndef IMGUI_DISABLE_FILE_FUNCTIONS
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io.Fonts->AddFontFromFileTTF("fonts/Roboto-Medium.ttf", 16.0f);
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//io.Fonts->AddFontFromFileTTF("fonts/Cousine-Regular.ttf", 15.0f);
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//io.Fonts->AddFontFromFileTTF("fonts/DroidSans.ttf", 16.0f);
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//io.Fonts->AddFontFromFileTTF("fonts/ProggyTiny.ttf", 10.0f);
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//ImFont* font = io.Fonts->AddFontFromFileTTF("fonts/ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
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//IM_ASSERT(font != NULL);
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// This example can also compile and run with Emscripten! See 'Makefile.emscripten' for details.
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#ifdef __EMSCRIPTEN__
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#include "../libs/emscripten/emscripten_mainloop_stub.h"
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#endif
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// This function will directly return and exit the main function.
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// Make sure that no required objects get cleaned up.
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// This way we can use the browsers 'requestAnimationFrame' to control the rendering.
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emscripten_set_main_loop_arg(main_loop, window, 0, false);
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// Global WebGPU required states
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static WGPUDevice wgpu_device = nullptr;
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static WGPUSurface wgpu_surface = nullptr;
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static WGPUTextureFormat wgpu_preferred_fmt = WGPUTextureFormat_RGBA8Unorm;
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static WGPUSwapChain wgpu_swap_chain = nullptr;
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static int wgpu_swap_chain_width = 0;
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static int wgpu_swap_chain_height = 0;
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return 0;
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}
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// Forward declarations
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static bool InitWGPU();
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static void CreateSwapChain(int width, int height);
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static bool init_wgpu()
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static void glfw_error_callback(int error, const char* description)
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{
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wgpu_device = emscripten_webgpu_get_device();
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if (!wgpu_device)
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return false;
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wgpuDeviceSetUncapturedErrorCallback(wgpu_device, print_wgpu_error, NULL);
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// Use C++ wrapper due to misbehavior in Emscripten.
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// Some offset computation for wgpuInstanceCreateSurface in JavaScript
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// seem to be inline with struct alignments in the C++ structure
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wgpu::SurfaceDescriptorFromCanvasHTMLSelector html_surface_desc = {};
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html_surface_desc.selector = "#canvas";
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wgpu::SurfaceDescriptor surface_desc = {};
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surface_desc.nextInChain = &html_surface_desc;
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// Use 'null' instance
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wgpu::Instance instance = {};
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wgpu_surface = instance.CreateSurface(&surface_desc).Release();
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return true;
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printf("GLFW Error %d: %s\n", error, description);
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}
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static void main_loop(void* window)
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{
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glfwPollEvents();
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int width, height;
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glfwGetFramebufferSize((GLFWwindow*) window, &width, &height);
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// React to changes in screen size
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if (width != wgpu_swap_chain_width && height != wgpu_swap_chain_height)
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{
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ImGui_ImplWGPU_InvalidateDeviceObjects();
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if (wgpu_swap_chain)
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wgpuSwapChainRelease(wgpu_swap_chain);
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wgpu_swap_chain_width = width;
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wgpu_swap_chain_height = height;
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WGPUSwapChainDescriptor swap_chain_desc = {};
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swap_chain_desc.usage = WGPUTextureUsage_OutputAttachment;
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swap_chain_desc.format = WGPUTextureFormat_RGBA8Unorm;
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swap_chain_desc.width = width;
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swap_chain_desc.height = height;
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swap_chain_desc.presentMode = WGPUPresentMode_Fifo;
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wgpu_swap_chain = wgpuDeviceCreateSwapChain(wgpu_device, wgpu_surface, &swap_chain_desc);
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ImGui_ImplWGPU_CreateDeviceObjects();
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}
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// Start the Dear ImGui frame
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ImGui_ImplWGPU_NewFrame();
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ImGui_ImplGlfw_NewFrame();
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ImGui::NewFrame();
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// 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!).
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if (show_demo_window)
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ImGui::ShowDemoWindow(&show_demo_window);
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// 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
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{
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static float f = 0.0f;
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static int counter = 0;
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ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
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ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
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ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
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ImGui::Checkbox("Another Window", &show_another_window);
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ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
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ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
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if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
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counter++;
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ImGui::SameLine();
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ImGui::Text("counter = %d", counter);
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ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
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ImGui::End();
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}
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// 3. Show another simple window.
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if (show_another_window)
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{
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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)
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ImGui::Text("Hello from another window!");
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if (ImGui::Button("Close Me"))
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show_another_window = false;
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ImGui::End();
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}
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// Rendering
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ImGui::Render();
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WGPURenderPassColorAttachmentDescriptor color_attachments = {};
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color_attachments.loadOp = WGPULoadOp_Clear;
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color_attachments.storeOp = WGPUStoreOp_Store;
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color_attachments.clearColor = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
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color_attachments.attachment = wgpuSwapChainGetCurrentTextureView(wgpu_swap_chain);
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WGPURenderPassDescriptor render_pass_desc = {};
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render_pass_desc.colorAttachmentCount = 1;
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render_pass_desc.colorAttachments = &color_attachments;
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render_pass_desc.depthStencilAttachment = NULL;
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WGPUCommandEncoderDescriptor enc_desc = {};
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WGPUCommandEncoder encoder = wgpuDeviceCreateCommandEncoder(wgpu_device, &enc_desc);
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WGPURenderPassEncoder pass = wgpuCommandEncoderBeginRenderPass(encoder, &render_pass_desc);
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ImGui_ImplWGPU_RenderDrawData(ImGui::GetDrawData(), pass);
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wgpuRenderPassEncoderEndPass(pass);
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WGPUCommandBufferDescriptor cmd_buffer_desc = {};
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WGPUCommandBuffer cmd_buffer = wgpuCommandEncoderFinish(encoder, &cmd_buffer_desc);
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WGPUQueue queue = wgpuDeviceGetDefaultQueue(wgpu_device);
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wgpuQueueSubmit(queue, 1, &cmd_buffer);
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}
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static void print_glfw_error(int error, const char* description)
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{
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printf("Glfw Error %d: %s\n", error, description);
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}
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static void print_wgpu_error(WGPUErrorType error_type, const char* message, void*)
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static void wgpu_error_callback(WGPUErrorType error_type, const char* message, void*)
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{
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const char* error_type_lbl = "";
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switch (error_type)
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@ -243,3 +55,226 @@ static void print_wgpu_error(WGPUErrorType error_type, const char* message, void
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}
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printf("%s error: %s\n", error_type_lbl, message);
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}
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// Main code
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int main(int, char**)
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{
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glfwSetErrorCallback(glfw_error_callback);
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if (!glfwInit())
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return 1;
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// Make sure GLFW does not initialize any graphics context.
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// This needs to be done explicitly later.
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glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
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GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+WebGPU example", nullptr, nullptr);
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if (window == nullptr)
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return 1;
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// Initialize the WebGPU environment
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if (!InitWGPU())
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{
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if (window)
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glfwDestroyWindow(window);
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glfwTerminate();
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return 1;
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}
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glfwShowWindow(window);
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// Setup Dear ImGui context
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IMGUI_CHECKVERSION();
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ImGui::CreateContext();
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ImGuiIO& io = ImGui::GetIO(); (void)io;
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io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
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io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
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// Setup Dear ImGui style
|
||||
ImGui::StyleColorsDark();
|
||||
//ImGui::StyleColorsLight();
|
||||
|
||||
// Setup Platform/Renderer backends
|
||||
ImGui_ImplGlfw_InitForOther(window, true);
|
||||
#ifdef __EMSCRIPTEN__
|
||||
ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback("#canvas");
|
||||
#endif
|
||||
ImGui_ImplWGPU_InitInfo init_info;
|
||||
init_info.Device = wgpu_device;
|
||||
init_info.NumFramesInFlight = 3;
|
||||
init_info.RenderTargetFormat = wgpu_preferred_fmt;
|
||||
init_info.DepthStencilFormat = WGPUTextureFormat_Undefined;
|
||||
ImGui_ImplWGPU_Init(&init_info);
|
||||
|
||||
// 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 a nullptr. 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 \\ !
|
||||
// - Emscripten allows preloading a file or folder to be accessible at runtime. See Makefile for details.
|
||||
//io.Fonts->AddFontDefault();
|
||||
#ifndef IMGUI_DISABLE_FILE_FUNCTIONS
|
||||
//io.Fonts->AddFontFromFileTTF("fonts/segoeui.ttf", 18.0f);
|
||||
io.Fonts->AddFontFromFileTTF("fonts/DroidSans.ttf", 16.0f);
|
||||
//io.Fonts->AddFontFromFileTTF("fonts/Roboto-Medium.ttf", 16.0f);
|
||||
//io.Fonts->AddFontFromFileTTF("fonts/Cousine-Regular.ttf", 15.0f);
|
||||
//io.Fonts->AddFontFromFileTTF("fonts/ProggyTiny.ttf", 10.0f);
|
||||
//ImFont* font = io.Fonts->AddFontFromFileTTF("fonts/ArialUni.ttf", 18.0f, nullptr, io.Fonts->GetGlyphRangesJapanese());
|
||||
//IM_ASSERT(font != nullptr);
|
||||
#endif
|
||||
|
||||
// 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
|
||||
#ifdef __EMSCRIPTEN__
|
||||
// For an Emscripten build we are disabling file-system access, so let's not attempt to do a fopen() of the imgui.ini file.
|
||||
// You may manually call LoadIniSettingsFromMemory() to load settings from your own storage.
|
||||
io.IniFilename = nullptr;
|
||||
EMSCRIPTEN_MAINLOOP_BEGIN
|
||||
#else
|
||||
while (!glfwWindowShouldClose(window))
|
||||
#endif
|
||||
{
|
||||
// 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();
|
||||
|
||||
// React to changes in screen size
|
||||
int width, height;
|
||||
glfwGetFramebufferSize((GLFWwindow*)window, &width, &height);
|
||||
if (width != wgpu_swap_chain_width && height != wgpu_swap_chain_height)
|
||||
{
|
||||
ImGui_ImplWGPU_InvalidateDeviceObjects();
|
||||
CreateSwapChain(width, height);
|
||||
ImGui_ImplWGPU_CreateDeviceObjects();
|
||||
}
|
||||
|
||||
// Start the Dear ImGui frame
|
||||
ImGui_ImplWGPU_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 / 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();
|
||||
|
||||
WGPURenderPassColorAttachment color_attachments = {};
|
||||
color_attachments.loadOp = WGPULoadOp_Clear;
|
||||
color_attachments.storeOp = WGPUStoreOp_Store;
|
||||
color_attachments.clearValue = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
|
||||
color_attachments.view = wgpuSwapChainGetCurrentTextureView(wgpu_swap_chain);
|
||||
|
||||
WGPURenderPassDescriptor render_pass_desc = {};
|
||||
render_pass_desc.colorAttachmentCount = 1;
|
||||
render_pass_desc.colorAttachments = &color_attachments;
|
||||
render_pass_desc.depthStencilAttachment = nullptr;
|
||||
|
||||
WGPUCommandEncoderDescriptor enc_desc = {};
|
||||
WGPUCommandEncoder encoder = wgpuDeviceCreateCommandEncoder(wgpu_device, &enc_desc);
|
||||
|
||||
WGPURenderPassEncoder pass = wgpuCommandEncoderBeginRenderPass(encoder, &render_pass_desc);
|
||||
ImGui_ImplWGPU_RenderDrawData(ImGui::GetDrawData(), pass);
|
||||
wgpuRenderPassEncoderEnd(pass);
|
||||
|
||||
WGPUCommandBufferDescriptor cmd_buffer_desc = {};
|
||||
WGPUCommandBuffer cmd_buffer = wgpuCommandEncoderFinish(encoder, &cmd_buffer_desc);
|
||||
WGPUQueue queue = wgpuDeviceGetQueue(wgpu_device);
|
||||
wgpuQueueSubmit(queue, 1, &cmd_buffer);
|
||||
}
|
||||
#ifdef __EMSCRIPTEN__
|
||||
EMSCRIPTEN_MAINLOOP_END;
|
||||
#endif
|
||||
|
||||
// Cleanup
|
||||
ImGui_ImplWGPU_Shutdown();
|
||||
ImGui_ImplGlfw_Shutdown();
|
||||
ImGui::DestroyContext();
|
||||
|
||||
glfwDestroyWindow(window);
|
||||
glfwTerminate();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static bool InitWGPU()
|
||||
{
|
||||
wgpu_device = emscripten_webgpu_get_device();
|
||||
if (!wgpu_device)
|
||||
return false;
|
||||
|
||||
wgpuDeviceSetUncapturedErrorCallback(wgpu_device, wgpu_error_callback, nullptr);
|
||||
|
||||
// Use C++ wrapper due to misbehavior in Emscripten.
|
||||
// Some offset computation for wgpuInstanceCreateSurface in JavaScript
|
||||
// seem to be inline with struct alignments in the C++ structure
|
||||
wgpu::SurfaceDescriptorFromCanvasHTMLSelector html_surface_desc = {};
|
||||
html_surface_desc.selector = "#canvas";
|
||||
|
||||
wgpu::SurfaceDescriptor surface_desc = {};
|
||||
surface_desc.nextInChain = &html_surface_desc;
|
||||
|
||||
wgpu::Instance instance = wgpuCreateInstance(nullptr);
|
||||
wgpu::Surface surface = instance.CreateSurface(&surface_desc);
|
||||
wgpu::Adapter adapter = {};
|
||||
wgpu_preferred_fmt = (WGPUTextureFormat)surface.GetPreferredFormat(adapter);
|
||||
wgpu_surface = surface.MoveToCHandle();
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static void CreateSwapChain(int width, int height)
|
||||
{
|
||||
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 = wgpu_preferred_fmt;
|
||||
swap_chain_desc.width = width;
|
||||
swap_chain_desc.height = height;
|
||||
swap_chain_desc.presentMode = WGPUPresentMode_Fifo;
|
||||
wgpu_swap_chain = wgpuDeviceCreateSwapChain(wgpu_device, wgpu_surface, &swap_chain_desc);
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue