2d.imageData.object.set.html (974B)
1 <!DOCTYPE html> 2 <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> 3 <meta charset="UTF-8"> 4 <title>OffscreenCanvas test: 2d.imageData.object.set</title> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 <script src="/html/canvas/resources/canvas-tests.js"></script> 8 9 <h1>2d.imageData.object.set</h1> 10 <p class="desc">ImageData.data can be modified</p> 11 12 13 <script> 14 var t = async_test("ImageData.data can be modified"); 15 var t_pass = t.done.bind(t); 16 var t_fail = t.step_func(function(reason) { 17 throw reason; 18 }); 19 t.step(function() { 20 21 var canvas = new OffscreenCanvas(100, 50); 22 var ctx = canvas.getContext('2d'); 23 24 var imgdata = ctx.getImageData(0, 0, 10, 10); 25 imgdata.data[0] = 100; 26 _assertSame(imgdata.data[0], 100, "imgdata.data[\""+(0)+"\"]", "100"); 27 imgdata.data[0] = 200; 28 _assertSame(imgdata.data[0], 200, "imgdata.data[\""+(0)+"\"]", "200"); 29 t.done(); 30 31 }); 32 </script>