In Order to get your UE4 powered HTML5 project working correctly you will need to disable MSAA from the Project Settings. In Firefox nightly, SharedArrayBuffer can be enabled in about:config by setting the _memory preference to true. Alternately, these can be enabled and disabled in chrome://flags/#enable-webassembly-threads as "WebAssembly threads support".
In Chrome: launch with the following flags: -js-flags=-experimental-wasm-threads -enable-features=WebAssembly,SharedArrayBuffer. Some browsers will need special flags enabled to be allowed to run in multithreaded mode. You can find 64-bit versions of the Google Chrome and Firefox web browsers using the following linksĮxperimental multithreaded support is available using UE4 builds built from source. While you can run your UE4 HTML5 project with 32-bit web browser, using a 64-bit version web browser is highly recommended.
Unreal engine 4 mac packaging install#
This means that you can start creating HTML5 projects without having to perform any additional setup steps or install any additional software.
When you download UE4 from either the Epic Games Launcher or from Epic's Github repository all of the needed Emscripten and Python files for HTML5 development will be included. The Unreal Engine 4 (UE4) HTML5 implementation utilizes the Emscripten toolchain from Mozilla to cross-compile UE4's C++ code into Javascript.
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