2d.imageData.put.unchanged.worker.js (1303B)
1 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. 2 // OffscreenCanvas test in a worker:2d.imageData.put.unchanged 3 // Description:putImageData(getImageData(...), ...) has no effect 4 // Note: 5 6 importScripts("/resources/testharness.js"); 7 importScripts("/html/canvas/resources/canvas-tests.js"); 8 9 var t = async_test("putImageData(getImageData(...), ...) has no effect"); 10 var t_pass = t.done.bind(t); 11 var t_fail = t.step_func(function(reason) { 12 throw reason; 13 }); 14 t.step(function() { 15 16 var canvas = new OffscreenCanvas(100, 50); 17 var ctx = canvas.getContext('2d'); 18 19 var i = 0; 20 for (var y = 0; y < 16; ++y) { 21 for (var x = 0; x < 16; ++x, ++i) { 22 ctx.fillStyle = 'rgba(' + i + ',' + (Math.floor(i*1.5) % 256) + ',' + (Math.floor(i*23.3) % 256) + ',' + (i/256) + ')'; 23 ctx.fillRect(x, y, 1, 1); 24 } 25 } 26 var imgdata1 = ctx.getImageData(0.1, 0.2, 15.8, 15.9); 27 var olddata = []; 28 for (var i = 0; i < imgdata1.data.length; ++i) 29 olddata[i] = imgdata1.data[i]; 30 31 ctx.putImageData(imgdata1, 0.1, 0.2); 32 33 var imgdata2 = ctx.getImageData(0.1, 0.2, 15.8, 15.9); 34 for (var i = 0; i < imgdata2.data.length; ++i) { 35 _assertSame(olddata[i], imgdata2.data[i], "olddata[\""+(i)+"\"]", "imgdata2.data[\""+(i)+"\"]"); 36 } 37 t.done(); 38 }); 39 done();