| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="../../resources/js-test-pre.js"></script> |
| </head> |
| <body> |
| <span id="e"></span> |
| <span id="f"></span> |
| <script> |
| description("Tests the timestamps provided to prefixed webkitRequestAnimationFrame callbacks"); |
| |
| var firstTimestamp = undefined; |
| var secondTimestamp = undefined; |
| var legacyFirstTimestamp = undefined; |
| var legacySecondTimestamp = undefined; |
| var deltaError = undefined; |
| |
| function busyWait(millis) { |
| var start = Date.now(); |
| while (Date.now()-start < millis) {} |
| } |
| |
| window.requestAnimationFrame(function(timestamp) { |
| firstTimestamp = timestamp; |
| }); |
| |
| window.webkitRequestAnimationFrame(function(timestamp) { |
| legacyFirstTimestamp = timestamp; |
| |
| window.requestAnimationFrame(function(timestamp) { |
| secondTimestamp = timestamp; |
| }); |
| |
| window.webkitRequestAnimationFrame(function(timestamp) { |
| legacySecondTimestamp = timestamp; |
| |
| shouldBeGreaterThanOrEqual("legacyFirstTimestamp", "firstTimestamp"); |
| shouldBeGreaterThanOrEqual("legacySecondTimestamp", "secondTimestamp"); |
| deltaError = Math.abs((legacySecondTimestamp - legacyFirstTimestamp) - (secondTimestamp - firstTimestamp)); |
| shouldBeTrue("deltaError < 0.001"); |
| testRunner.notifyDone(); |
| }); |
| |
| busyWait(10); |
| if (window.testRunner) |
| testRunner.displayAndTrackRepaints(); |
| }); |
| |
| if (window.testRunner) |
| window.setTimeout(function() { |
| testRunner.displayAndTrackRepaints(); |
| }); |
| |
| if (window.testRunner) |
| testRunner.waitUntilDone(); |
| </script> |
| </body> |
| </html> |
