2d.imageData.get.nonpremul.worker.js (1083B)
1 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. 2 // OffscreenCanvas test in a worker:2d.imageData.get.nonpremul 3 // Description:getImageData() returns non-premultiplied colors 4 // Note: 5 6 importScripts("/resources/testharness.js"); 7 importScripts("/html/canvas/resources/canvas-tests.js"); 8 9 var t = async_test("getImageData() returns non-premultiplied colors"); 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 ctx.fillStyle = 'rgba(255, 255, 255, 0.5)'; 20 ctx.fillRect(0, 0, 100, 50); 21 var imgdata = ctx.getImageData(10, 10, 10, 10); 22 _assert(imgdata.data[0] > 200, "imgdata.data[\""+(0)+"\"] > 200"); 23 _assert(imgdata.data[1] > 200, "imgdata.data[\""+(1)+"\"] > 200"); 24 _assert(imgdata.data[2] > 200, "imgdata.data[\""+(2)+"\"] > 200"); 25 _assert(imgdata.data[3] > 100, "imgdata.data[\""+(3)+"\"] > 100"); 26 _assert(imgdata.data[3] < 200, "imgdata.data[\""+(3)+"\"] < 200"); 27 t.done(); 28 }); 29 done();