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| 1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
| 2 <script src="../resources/runner.js"></script> | 2 <script src="../resources/runner.js"></script> |
| 3 <pre id="log"></pre> | 3 <pre id="log"></pre> |
| 4 <style>td { border: 1px solid blue }</style> | 4 <style>td { border: 1px solid blue }</style> |
| 5 <script> | 5 <script> |
| 6 // We discard the first iteration to avoid a cold outlier. | |
| 7 var iterations = 11; | |
| 8 var results = []; | |
| 9 var previousFrameTime = -1; | |
| 10 var now = function(){ | |
| 11 return window.performance ? performance.now() : Date.now(); | |
| 12 }; | |
| 13 | |
| 14 function createTable(rows, columns) { | 6 function createTable(rows, columns) { |
| 15 var table = document.createElement("TABLE"); | 7 var table = document.createElement("TABLE"); |
| 16 // Collapsing border is not necessary to see the slowness | 8 // Collapsing border is not necessary to see the slowness |
| 17 // but it makes the painting phase ~2x slower. | 9 // but it makes the painting phase ~2x slower. |
| 18 table.style.borderCollapse = "collapse"; | 10 table.style.borderCollapse = "collapse"; |
| 19 for (var i = 0; i < rows; ++i) { | 11 for (var i = 0; i < rows; ++i) { |
| 20 var tr = document.createElement("TR"); | 12 var tr = document.createElement("TR"); |
| 21 for (var j = 0; j < columns; ++j) { | 13 for (var j = 0; j < columns; ++j) { |
| 22 var td = document.createElement("TD"); | 14 var td = document.createElement("TD"); |
| 23 tr.appendChild(td); | 15 tr.appendChild(td); |
| 24 } | 16 } |
| 25 table.appendChild(tr); | 17 table.appendChild(tr); |
| 26 } | 18 } |
| 27 return table; | 19 return table; |
| 28 } | 20 } |
| 29 | 21 |
| 22 var table = createTable(300, 320); |
| 23 document.body.insertBefore(table, log); |
| 30 | 24 |
| 31 var table = createTable(300, 320); | 25 var ix = 30; |
| 32 document.body.appendChild(table); | 26 var iy = 30; |
| 33 | 27 |
| 34 ix=30; | 28 PerfTestRunner.measureFrameTime({ |
| 35 iy=30; | 29 run: function() { |
| 36 | 30 table.childNodes[iy].childNodes[ix].style.backgroundColor = 'teal'; |
| 37 function toggleBackgroundColor() | 31 ix++; |
| 38 { | 32 iy++; |
| 39 var thisFrameTime = now(); | 33 }, |
| 40 if (previousFrameTime != -1) | 34 warmUpCount: 5, |
| 41 results.push(thisFrameTime - previousFrameTime); | 35 }); |
| 42 previousFrameTime = thisFrameTime; | |
| 43 | |
| 44 if (iterations == 0) { | |
| 45 PerfTestRunner.logStatistics(results, 'ms', "Time:"); | |
| 46 if (window.testRunner) | |
| 47 testRunner.notifyDone(); | |
| 48 } else { | |
| 49 iterations--; | |
| 50 window.requestAnimationFrame(toggleBackgroundColor); | |
| 51 } | |
| 52 | |
| 53 table.childNodes[iy].childNodes[ix].style.backgroundColor = 'teal'; | |
| 54 ix++; | |
| 55 iy++; | |
| 56 } | |
| 57 | |
| 58 if (window.testRunner) | |
| 59 testRunner.waitUntilDone(); | |
| 60 | |
| 61 // Start the test after two frame to ensure we have set-up, laid out and painted
the table. | |
| 62 window.requestAnimationFrame(function() { window.requestAnimationFrame(toggleBac
kgroundColor) }); | |
| 63 </script> | 36 </script> |
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Chromium Code Reviews
Issue 2429623004:
Add performance tests for full frame cycle (Closed)
