2d.imageData.put.created.worker.js (1018B)
1 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. 2 // OffscreenCanvas test in a worker:2d.imageData.put.created 3 // Description:putImageData() puts image data from createImageData() onto the canvas 4 // Note: 5 6 importScripts("/resources/testharness.js"); 7 importScripts("/html/canvas/resources/canvas-tests.js"); 8 9 var t = async_test("putImageData() puts image data from createImageData() onto the canvas"); 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 imgdata = ctx.createImageData(100, 50); 20 for (var i = 0; i < imgdata.data.length; i += 4) { 21 imgdata.data[i] = 0; 22 imgdata.data[i+1] = 255; 23 imgdata.data[i+2] = 0; 24 imgdata.data[i+3] = 255; 25 } 26 ctx.fillStyle = '#f00'; 27 ctx.fillRect(0, 0, 100, 50) 28 ctx.putImageData(imgdata, 0, 0); 29 _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2); 30 t.done(); 31 }); 32 done();