| <!DOCTYPE html> |
| <html class="reftest-wait"> |
| <link rel="help" href="https://drafts.css-houdini.org/css-paint-api/"> |
| <link rel="match" href="one-custom-property-animation-ref.html"> |
| <style> |
| .container { |
| width: 100px; |
| height: 100px; |
| animation: expand 5s; |
| /* TODO(crbug.com/987969): the will-change: transform should not be needed. */ |
| will-change: transform; |
| } |
| @keyframes expand { |
| 0% { --foo: 0; } |
| 0.01% { --foo: 50; } |
| 99% { --foo: 50; } |
| 100% { --foo: 100; } |
| } |
| |
| #canvas-geometry { |
| background-color: blue; |
| background-image: paint(geometry); |
| } |
| </style> |
| <script src="/common/reftest-wait.js"></script> |
| <script src="/common/worklet-reftest.js"></script> |
| <body> |
| <div id="canvas-geometry" class="container"></div> |
| |
| <script id="code" type="text/worklet"> |
| registerPaint('geometry', class { |
| static get inputProperties() { return ['--foo']; } |
| paint(ctx, geom, properties) { |
| let fooValue = parseFloat(properties.get('--foo').toString()); |
| ctx.fillStyle = 'green'; |
| ctx.fillRect(0, 0, fooValue, fooValue); |
| } |
| }); |
| </script> |
| |
| <script> |
| CSS.registerProperty({ |
| name: '--foo', |
| syntax: '<number>', |
| initialValue: '0', |
| inherits: false |
| }); |
| </script> |
| |
| <script> |
| // The test is designed to make sure that when the custom property animation is |
| // running on the compositor thread, we are getting the right value. |
| // The "importWorkletAndTerminateTestAfterAsyncPaint" has the logic to rAF |
| // two frames before taking a screenshot. So the animation is designed to |
| // be stable after two frames. That is, the 0.01% of 5s is much less than |
| // two frames, and thus after two frames, the value of --foo should be stable. |
| importWorkletAndTerminateTestAfterAsyncPaint(CSS.paintWorklet, document.getElementById('code').textContent); |
| </script> |
| </body> |
| </html> |
