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wasm binary loader with fallback to asm.js
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>LOADING...</title> | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| window.onload = function () { | |
| var LoadAsmJS = function (fileName, onLoad) { | |
| var script = document.createElement('script'); | |
| script.addEventListener('load', function (evt) { | |
| /* Stupid hack */ | |
| setTimeout(function checkScriptLoaded () { | |
| if (!window.Module.asm._free) { | |
| setTimeout(checkScriptLoaded, 100); | |
| } else { | |
| onLoad(); | |
| console.log('ASM.js file loaded'); | |
| location.hash = '#asm.js' | |
| } | |
| }, 100); | |
| }, true); | |
| script.addEventListener('error', function () { | |
| console.error('Failed to load asm.js'); | |
| }); | |
| script.async = true; | |
| script.src = fileName + '.asm.js'; | |
| document.body.appendChild(script); | |
| }; | |
| var LoadEM = function (fileName, onLoad) { | |
| window.Module = window.Module || {}; | |
| if (location.hash !== '#asm.js' && ('WebAssembly' in window && WebAssembly.instantiate !== undefined)) { | |
| var xhr = new XMLHttpRequest(); | |
| xhr.open('GET', fileName + '.wasm', true); | |
| xhr.responseType = 'arraybuffer'; | |
| xhr.addEventListener('error', function () { | |
| console.log('Failed to load wasm file'); | |
| LoadAsmJS(fileName, onLoad); | |
| console.log('Fallback to asm.js'); | |
| }); | |
| xhr.addEventListener('load', function() { | |
| if (xhr.status === 200) { | |
| var script = document.createElement('script'); | |
| window.Module.wasmBinary = xhr.response; | |
| script.onload = function (evt) { | |
| /* Stupid hack */ | |
| setTimeout(function checkScriptLoaded () { | |
| if (!window.Module.asm._free) { | |
| setTimeout(checkScriptLoaded, 100); | |
| } else { | |
| onLoad(); | |
| console.log('WebAssembly binary loaded'); | |
| } | |
| }, 100); | |
| }; | |
| script.src = fileName + '.js'; | |
| document.body.appendChild(script); | |
| } else if( xhr.status == 404) { | |
| LoadAsmJS(fileName, onLoad); | |
| console.log('Fallback to asm.js'); | |
| } | |
| }, true); | |
| xhr.async = true; | |
| xhr.send(null); | |
| } else { | |
| LoadAsmJS(fileName, onLoad); | |
| console.log('Fallback to asm.js'); | |
| } | |
| }; | |
| LoadEM(/* Here set the name for your app ==> */ 'game', function () { | |
| console.log('Loading complete'); | |
| }); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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