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# Conflicts: # backends/imgui_impl_dx10.cpp # backends/imgui_impl_dx10.h # backends/imgui_impl_vulkan.h # backends/imgui_impl_win32.cpp # docs/CHANGELOG.txt # examples/README.txt # examples/example_glfw_opengl2/main.cpp # examples/example_glfw_opengl3/main.cpp # examples/example_glfw_vulkan/main.cpp # examples/example_sdl_directx11/main.cpp # examples/example_sdl_opengl2/main.cpp # examples/example_sdl_opengl3/main.cpp # examples/example_sdl_vulkan/main.cpp # examples/example_win32_directx10/main.cpp # examples/example_win32_directx11/main.cpp # examples/example_win32_directx12/main.cpp # examples/example_win32_directx9/main.cpp # imgui.cpp # imgui.h # imgui_demo.cpp # imgui_internal.h
How to Build
- 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
- You may also refer to our Continuous Integration setup for Emscripten setup.
- Depending on your configuration, in Windows you may need to run
emsdk/emsdk_env.batin your console to access the Emscripten command-line tools. - Then build using
makewhile in theexample_emscripten/directory.
How to Run
To run on a local machine:
- Generally you may need a local webserver. Quoting https://emscripten.org/docs/getting_started:
"Unfortunately several browsers (including Chrome, Safari, and Internet Explorer) do not support file:// 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 and then open http://localhost:8000/hello.html." - Emscripten SDK has a handy
emruncommand:emrun example_emscripten.htmlwhich will spawn a temporary local webserver. See https://emscripten.org/docs/compiling/Running-html-files-with-emrun.html for details. - Otherwise you may use Python builtin webserver:
python -m http.serverin Python 3 orpython -m SimpleHTTPServerin Python 2. After doing that, you can visit http://localhost:8000/.
Obsolete features:
- Emscripten 2.0 (August 2020) obsoleted the fastcomp backend, only llvm is supported.
- Emscripten 1.39.0 (October 2019) obsoleted the
BINARYEN_TRAP_MODE=clampcompilation flag which was required with version older than 1.39.0 to avoid rendering artefacts. See #2877 for details. If you use an older version, uncomment this line in the Makefile:#EMS += -s BINARYEN_TRAP_MODE=clamp