| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>Skottie-WASM Perf</title> |
| <meta charset="utf-8" /> |
| <meta http-equiv="X-UA-Compatible" content="IE=egde,chrome=1"> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> |
| <script src="res/canvaskit.js" type="text/javascript" charset="utf-8"></script> |
| <style type="text/css" media="screen"> |
| body { |
| margin: 0; |
| padding: 0; |
| } |
| </style> |
| </head> |
| <body> |
| <main> |
| <canvas id=anim width=1000 height=1000 style="height: 1000px; width: 1000px;"></canvas> |
| </main> |
| <script type="text/javascript" charset="utf-8"> |
| (function() { |
| const PATH = '/res/lottie.json'; |
| |
| let lottieJSON = null; |
| let CK = null; |
| |
| CanvasKitInit({ |
| locateFile: (file) => '/res/'+file, |
| }).ready().then((CanvasKit) => { |
| CK = CanvasKit; |
| Bench(CK, lottieJSON); |
| }); |
| |
| fetch(PATH).then((resp) => { |
| resp.text().then((json) => { |
| lottieJSON = json; |
| Bench(CK, lottieJSON); |
| }); |
| }); |
| })(); |
| |
| const maxFrames = 25; |
| const maxLoops = 5; |
| |
| function Bench(CK, json) { |
| if (!CK || !json) { |
| return; |
| } |
| |
| const animation = CK.MakeManagedAnimation(json, null); |
| if (!animation) { |
| window._error = 'Could not process JSON'; |
| return |
| } |
| |
| let surface = null; |
| if (window.location.hash.indexOf('gpu') !== -1) { |
| surface = CK.MakeWebGLCanvasSurface('anim'); |
| if (!surface) { |
| window._error = 'Could not make GPU surface'; |
| return; |
| } |
| let c = document.getElementById('anim'); |
| // If CanvasKit was unable to instantiate a WebGL context, it will fallback |
| // to CPU and add a ck-replaced class to the canvas element. |
| if (c.classList.contains('ck-replaced')) { |
| window._error = 'fell back to CPU'; |
| return; |
| } |
| } else { |
| surface = CK.MakeSWCanvasSurface('anim'); |
| if (!surface) { |
| window._error = 'Could not make CPU surface'; |
| return; |
| } |
| } |
| const canvas = surface.getCanvas(); |
| |
| const t_rate = 1.0 / (maxFrames-1); |
| let seek = 0; |
| let frame = 0; |
| let loop = 0; |
| const drawFrame = () => { |
| if (frame >= maxFrames) { |
| // Reached the end of one loop. |
| loop++; |
| if (loop == maxLoops) { |
| // These are global variables to talk with puppeteer. |
| window._skottieDone = true; |
| return; |
| } |
| // Reset frame and seek to restart the loop. |
| frame = 0; |
| seek = 0; |
| } |
| |
| let damage = animation.seek(seek); |
| if (damage.fRight > damage.fLeft && damage.fBottom > damage.fTop) { |
| animation.render(canvas, { |
| fLeft: 0, |
| fTop: 0, |
| fRight: 1000, |
| fBottom: 1000 |
| }); |
| surface.flush(); |
| } |
| console.log(`Used seek: ${seek}`); |
| seek += t_rate; |
| frame++; |
| window.requestAnimationFrame(drawFrame); |
| }; |
| window.requestAnimationFrame(drawFrame); |
| } |
| </script> |
| </body> |
| </html> |
