<!-- This benchmark run a lot of small benchmarks that are defined with a karma-like sytax
in canvas_perf.js
-->
<!DOCTYPE html>
<html>
<head>
<title>CanvasKit SKP Perf</title>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="/static/canvaskit.js" type="text/javascript" charset="utf-8"></script>
<script src="/static/benchmark.js" type="text/javascript" charset="utf-8"></script>
<script src="/static/canvas_perf.js" type="text/javascript" charset="utf-8"></script>
<style type="text/css" media="screen">
body {
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<main>
<button id="start_bench">Start Benchmark</button>
<br>
<canvas id=anim width=600 height=600 style="height: 600px; width: 600px;"></canvas>
</main>
<script type="text/javascript" charset="utf-8">
const WIDTH = 600;
const HEIGHT = 600;
const WARM_UP_FRAMES = 5;
// Keeping this a little lower because this test runs many smaller tests,
// each for this many frames, which could add up to a long time.
const MAX_FRAMES = 51;
// Any external files needed by tests in canvas_perf.js must be listed here.
// And checked in under canvas_perf_assets/
// tests may then fetch them from ctx.files['filename']
const testDataFiles = [
'test_64x64.png',
'test_512x512.png',
'test_1500x959.jpg',
'Roboto-Regular.ttf',
];
(function() {
const filePromises = [];
for (const filename of testDataFiles) {
filePromises.push(fetch('/static/assets/'+filename).then((resp) => {
return resp.arrayBuffer(); // this is also a promise.
}));
}
const externals = Promise.all(filePromises).then((results) => {
const files = {};
let i=0;
for (const bytes of results) {
// store them by name
files[testDataFiles[i]] = bytes;
i++;
}
return files;
});
const loadCanvasKit = CanvasKitInit({
locateFile: (file) => '/static/' + file,
});
Promise.all([loadCanvasKit, externals]).then(([CanvasKit, externalFiles]) => {
const urlSearchParams = new URLSearchParams(window.location.search);
let glversion = 2;
if (urlSearchParams.has('webgl1')) {
glversion = 1;
}
let surface = getSurface(CanvasKit, glversion);
if (!surface) {
console.error('Could not make surface', window._error);
return;
}
document.getElementById('start_bench').addEventListener('click', async () => {
window._perfData = {};
// canvas_perf.js should have defined an array called tests whose objects have:
// setup: A function called once before testing begins, it is expected to make its
// own canvas and put it in ctx.
// test: A function called to draw one frame
// teardown: A function called after testing finishes
// description: A human readable description
// perfkey: A key used to save the results in perf.skia.org.
//
// For quick local bench testing, there is also an array called onlytests. This way
// a developer can replace tests.push with onlytests.push to just run one or two
// performance benchmarks they care about.
let testsToRun = tests;
if (onlytests.length) {
testsToRun = onlytests;
}
for (const t of testsToRun) {
let ctx = {
'surface': surface,
'files': externalFiles,
};
console.log('Benchmarking "' + t.description + '"');
t.setup(CanvasKit, ctx);
function draw() {
t.test(CanvasKit, ctx);
}
// TODO(nifong): is it ok to keep re-using the surface?
results = await startTimingFrames(draw, surface, WARM_UP_FRAMES, MAX_FRAMES);
t.teardown(CanvasKit, ctx);
window._perfData[t.perfKey] = results;
// Delete and re-create surface between tests, to prevent the possibility of
// interference between them through the state of surface, the gl context, or things
// that are keyed by the surface's gen id.
surface.delete();
surface = getSurface(CanvasKit, glversion);
// TODO(nifong): provide a function similar to startTimingFrames for timing
// non-visual tests.
}
surface.delete();
window._perfDone = true;
});
console.log('Perf is ready');
window._perfReady = true;
});
}
)();
</script>
</body>
</html>