| OLD | NEW |
|---|
| 1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
| 2 <body> | 2 <body> |
| 3 <script src="../resources/runner.js"></script> | 3 <script src="../resources/runner.js"></script> |
| 4 <script src="resources/paint.js"></script> |
| 4 <style>td { border: 1px solid blue; font-size: 3px; }</style> | 5 <style>td { border: 1px solid blue; font-size: 3px; }</style> |
| 5 <script> | 6 <script> |
| 6 function createTable(rows, columns) { | 7 function createTable(rows, columns) { |
| 7 var table = document.createElement("TABLE"); | 8 var table = document.createElement("TABLE"); |
| 8 // Collapsing border is not necessary to see the slowness | 9 // Collapsing border is not necessary to see the slowness |
| 9 // but it makes the painting phase ~2x slower. | 10 // but it makes the painting phase ~2x slower. |
| 10 table.style.borderCollapse = "collapse"; | 11 table.style.borderCollapse = "collapse"; |
| 11 for (var i = 0; i < rows; ++i) { | 12 for (var i = 0; i < rows; ++i) { |
| 12 var tr = document.createElement("TR"); | 13 var tr = document.createElement("TR"); |
| 13 for (var j = 0; j < columns; ++j) { | 14 for (var j = 0; j < columns; ++j) { |
| 14 var td = document.createElement("TD"); | 15 var td = document.createElement("TD"); |
| 15 td.appendChild(document.createTextNode("ABC")); | 16 td.appendChild(document.createTextNode("ABC")); |
| 16 tr.appendChild(td); | 17 tr.appendChild(td); |
| 17 } | 18 } |
| 18 table.appendChild(tr); | 19 table.appendChild(tr); |
| 19 } | 20 } |
| 20 return table; | 21 return table; |
| 21 } | 22 } |
| 22 | 23 |
| 23 var table = createTable(300, 320); | 24 var table = createTable(300, 320); |
| 24 document.body.appendChild(table); | 25 document.body.appendChild(table); |
| 25 | 26 |
| 26 var ix = 30; | 27 var ix = 30; |
| 27 var iy = 30; | 28 var iy = 30; |
| 28 | 29 |
| 29 PerfTestRunner.measureFrameTime({ | 30 measurePaint({ |
| 30 run: function() { | 31 run: function() { |
| 31 table.childNodes[iy].childNodes[ix].style.borderColor = "red"; | 32 table.childNodes[iy].childNodes[ix].style.borderColor = "red"; |
| 32 ix++; | 33 ix++; |
| 33 iy++; | 34 iy++; |
| 34 }, | 35 }, |
| 35 }); | 36 }); |
| 36 </script> | 37 </script> |
| 37 </body> | 38 </body> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2883603002:
Use the new tracing based measurement for blink_perf.paint (Closed)
