| <!DOCTYPE html> |
| <body> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <style> |
| |
| div { |
| position: absolute; |
| left: 0; |
| top: 0; |
| width: 100px; |
| height: 100px; |
| background-color: black; |
| } |
| |
| </style> |
| <script> |
| |
| const createDiv = test => { |
| const div = document.createElement("div"); |
| test.add_cleanup(() => div.remove()); |
| return document.body.appendChild(div); |
| } |
| |
| const animationReadyToAnimateAccelerated = async animation => { |
| await animation.ready; |
| await new Promise(requestAnimationFrame); |
| await new Promise(requestAnimationFrame); |
| await new Promise(requestAnimationFrame); |
| } |
| |
| const duration = 1000 * 1000; // 1000s. |
| |
| promise_test(async test => { |
| const target = createDiv(test); |
| |
| // Set offset on the underlying style. |
| target.style.offset = "path('M10,10 H10')"; |
| |
| // Add a transform animation that could be accelerated by itself. |
| const animation = target.animate( |
| { transform: "translateX(100px)" }, |
| { duration } |
| ); |
| await animationReadyToAnimateAccelerated(animation); |
| assert_equals(internals.acceleratedAnimationsForElement(target).length, 0); |
| }, "Setting 'offset' on the underlying style prevents a 'transform' animation from being accelerated."); |
| |
| promise_test(async test => { |
| const target = createDiv(test); |
| |
| // Add a transform animation that can be accelerated by itself. |
| const animation = target.animate( |
| { transform: "translateX(100px)" }, |
| { duration } |
| ); |
| await animationReadyToAnimateAccelerated(animation); |
| assert_equals(internals.acceleratedAnimationsForElement(target).length, 1); |
| |
| // Set offset on the underlying style. |
| target.style.offset = "path('M10,10 H10')"; |
| await animationReadyToAnimateAccelerated(animation); |
| assert_equals(internals.acceleratedAnimationsForElement(target).length, 0); |
| |
| // Remove offset on the underlying style. |
| target.style.removeProperty("offset"); |
| await animationReadyToAnimateAccelerated(animation); |
| assert_equals(internals.acceleratedAnimationsForElement(target).length, 1); |
| }, "Toggling 'offset' dynamically on the underlying style toggles the ability for a 'transform' animation to be accelerated."); |
| |
| promise_test(async test => { |
| const target = createDiv(test); |
| |
| const animation = target.animate( |
| { transform: "translateX(100px)", cssOffset: ["path('M10,10 H10')", "path('M10,10 H20')"] }, |
| { duration } |
| ); |
| await animationReadyToAnimateAccelerated(animation); |
| assert_equals(internals.acceleratedAnimationsForElement(target).length, 0); |
| }, "Animating both 'offset' and 'transform' on the same animation prevents acceleration."); |
| |
| promise_test(async test => { |
| const target = createDiv(test); |
| const animations = []; |
| |
| // First add a transform animation that could be accelerated by itself. |
| animations.push(target.animate( |
| { transform: "translateX(100px)" }, |
| { duration } |
| )); |
| await Promise.all(animations.map(animation => animationReadyToAnimateAccelerated(animation))); |
| assert_equals(internals.acceleratedAnimationsForElement(target).length, 1); |
| |
| // Then, add an offset animation that prevents the whole stack from being accelerated. |
| animations.push(target.animate( |
| { cssOffset: ["path('M10,10 H10')", "path('M10,10 H20')"] }, |
| { duration } |
| )); |
| await Promise.all(animations.map(animation => animationReadyToAnimateAccelerated(animation))); |
| assert_equals(internals.acceleratedAnimationsForElement(target).length, 0); |
| |
| // Canceling the offset animation will no longer prevent the stack from being accelerated. |
| animations.at(-1).cancel(); |
| await Promise.all(animations.map(animation => animationReadyToAnimateAccelerated(animation))); |
| assert_equals(internals.acceleratedAnimationsForElement(target).length, 1); |
| }, "Animating both 'offset' and 'transform' on different animations prevents acceleration."); |
| |
| promise_test(async test => { |
| const target = createDiv(test); |
| |
| const animation = target.animate( |
| { transform: "translateX(100px)" }, |
| { duration } |
| ); |
| await animationReadyToAnimateAccelerated(animation); |
| assert_equals(internals.acceleratedAnimationsForElement(target).length, 1); |
| |
| animation.effect.setKeyframes( |
| { transform: "translateX(100px)", cssOffset: ["path('M10,10 H10')", "path('M10,10 H20')"] } |
| ); |
| await animationReadyToAnimateAccelerated(animation); |
| assert_equals(internals.acceleratedAnimationsForElement(target).length, 0); |
| }, "Setting keyframes on an animation to include 'offset' on top of 'transform' prevents acceleration."); |
| |
| </script> |
| </body> |
