| jamesr@google.com | 250664d | 2012-08-27 22:42:30 +0000 | [diff] [blame] | 1 | <!DOCTYPE html> |
| 2 | <html> |
| 3 | <head> |
| 4 | <style type="text/css" media="screen"> |
| 5 | canvas { |
| 6 | margin: 20px; |
| 7 | width: 200px; |
| 8 | height: 200px; |
| 9 | padding: 0 0; |
| 10 | } |
| 11 | .border { |
| 12 | border: 1px solid black; |
| 13 | } |
| 14 | </style> |
| 15 | <script> |
| jamesr@google.com | 250664d | 2012-08-27 22:42:30 +0000 | [diff] [blame] | 16 | function initWebGL() |
| 17 | { |
| 18 | var canvas = document.getElementById('canvas'); |
| 19 | var gl = canvas.getContext("experimental-webgl", {'antialias': false}); |
| 20 | if (!gl) { |
| 21 | alert("No WebGL context found"); |
| 22 | return null; |
| 23 | } |
| 24 | |
| 25 | return gl; |
| 26 | } |
| 27 | |
| 28 | var gl = null; |
| 29 | |
| 30 | function init() |
| 31 | { |
| 32 | gl = initWebGL(); |
| 33 | gl.viewport(0, 0, 200, 200); |
| 34 | gl.clearColor(1, 0, 0, 1); // red |
| 35 | gl.clear(gl.COLOR_BUFFER_BIT); |
| 36 | if (window.testRunner) { |
| commit-queue@webkit.org | 8e8c3bd | 2017-05-04 21:46:39 +0000 | [diff] [blame] | 37 | testRunner.displayAndTrackRepaints(); |
| jamesr@google.com | 250664d | 2012-08-27 22:42:30 +0000 | [diff] [blame] | 38 | testRunner.dumpAsText(true); |
| 39 | drawGreen(); |
| 40 | } else |
| 41 | window.setTimeout(drawGreen, 50); |
| 42 | } |
| 43 | |
| 44 | function drawGreen() |
| 45 | { |
| 46 | gl.clearColor(0, 1, 0, 1); // green |
| 47 | gl.clear(gl.COLOR_BUFFER_BIT); |
| 48 | if (window.testRunner) { |
| commit-queue@webkit.org | 8e8c3bd | 2017-05-04 21:46:39 +0000 | [diff] [blame] | 49 | testRunner.displayAndTrackRepaints(); |
| 50 | testRunner.displayAndTrackRepaints(); |
| jamesr@google.com | 250664d | 2012-08-27 22:42:30 +0000 | [diff] [blame] | 51 | } else |
| 52 | window.setInterval(function() { |
| 53 | document.getElementById('canvas').classList.toggle('border'); |
| 54 | }, 50); |
| 55 | } |
| 56 | |
| 57 | </script> |
| 58 | </head> |
| 59 | <body onload="init()"> |
| 60 | <canvas id="canvas" width="200" height="200"></canvas> |
| 61 | </body> |
| 62 | </html> |
