1<!DOCTYPE html> 2<html> 3<head> 4 <title>Skia+WebGPU compiled with Bazel</title> 5 <meta charset="utf-8" /> 6 <meta http-equiv="X-UA-Compatible" content="IE=edge"> 7 <meta name="viewport" content="width=device-width, initial-scale=1.0"> 8 <script type="text/javascript" src="/build/hello-world.js"></script> 9 <style> 10 body { 11 display: flex; 12 flex-direction: column; 13 align-items: center; 14 width: 100%; 15 height: 100%; 16 margin: 0; 17 padding: 0; 18 background: #000; 19 } 20 p { 21 color: white; 22 font-family: sans-serif; 23 } 24 button { 25 margin: 20px; 26 color: white; 27 background-color: black; 28 border: none; 29 text-decoration: none; 30 font-size: 20px; 31 cursor: pointer; 32 } 33 </style> 34</head> 35<body> 36 <p id="log"></p> 37 <canvas id="webgpu-demo-canvas" width=600 height=600></canvas> 38 <div id="buttons"> 39 <button id="solid-color">Solid Color</button> 40 <button id="gradient">Gradient</button> 41 <button id="runtime-effect">Runtime Effect</button> 42 </div> 43 <script type="text/javascript" charset="utf-8"> 44 if (navigator.gpu) { 45 log("WebGPU detected") 46 WebGPUDemo(); 47 } else { 48 log("No WebGPU support.") 49 } 50 51 function log(s) { 52 document.getElementById("log").innerText = s; 53 } 54 55 async function WebGPUDemo() { 56 const adapter = await navigator.gpu.requestAdapter(); 57 if (!adapter) { 58 log("Could not load an adapter. For Chrome, try running with --enable-features=Vulkan --enable-unsafe-webgpu"); 59 return; 60 } 61 const device = await adapter.requestDevice(); 62 console.log(adapter, device); 63 64 const wk = await WebGPUKitInit({locateFile: (file) => "/build/"+file}); 65 // https://github.com/emscripten-core/emscripten/issues/12750#issuecomment-725001907 66 wk.preinitializedWebGPUDevice = device; 67 68 const demo = new wk.Demo(); 69 if (!demo.init("#webgpu-demo-canvas", 600, 600)) { 70 log("Failed to initialize Skia context"); 71 return; 72 } 73 74 let demoKind = wk.DemoKind.RUNTIME_EFFECT; 75 demo.setKind(demoKind); 76 document.getElementById("runtime-effect").style["text-decoration"] = "underline"; 77 78 document.getElementById("solid-color").onclick = function() { 79 demoKind = wk.DemoKind.SOLID_COLOR; 80 document.getElementById("solid-color").style["text-decoration"] = "underline"; 81 document.getElementById("gradient").style["text-decoration"] = "none"; 82 document.getElementById("runtime-effect").style["text-decoration"] = "none"; 83 }; 84 document.getElementById("gradient").onclick = function() { 85 demoKind = wk.DemoKind.GRADIENT; 86 document.getElementById("solid-color").style["text-decoration"] = "none"; 87 document.getElementById("gradient").style["text-decoration"] = "underline"; 88 document.getElementById("runtime-effect").style["text-decoration"] = "none"; 89 }; 90 document.getElementById("runtime-effect").onclick = function() { 91 demoKind = wk.DemoKind.RUNTIME_EFFECT; 92 document.getElementById("solid-color").style["text-decoration"] = "none"; 93 document.getElementById("gradient").style["text-decoration"] = "none"; 94 document.getElementById("runtime-effect").style["text-decoration"] = "underline"; 95 }; 96 97 let timestamp = 0; 98 async function frame(now) { 99 if (demoKind == wk.DemoKind.RUNTIME_EFFECT || timestamp == 0 || now - timestamp >= 1000) { 100 timestamp = now; 101 demo.setKind(demoKind); 102 await demo.draw(timestamp); 103 } 104 requestAnimationFrame(frame); 105 } 106 requestAnimationFrame(frame); 107 } 108 </script> 109</body> 110</html> 111