2d.gradient.interpolate.overlap.worker.js (1477B)
1 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. 2 // OffscreenCanvas test in a worker:2d.gradient.interpolate.overlap 3 // Description: 4 // Note: 5 6 importScripts("/resources/testharness.js"); 7 importScripts("/html/canvas/resources/canvas-tests.js"); 8 9 var t = async_test(""); 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 canvas.width = 200; 20 var g = ctx.createLinearGradient(0, 0, 200, 0); 21 g.addColorStop(0, '#f00'); 22 g.addColorStop(0, '#ff0'); 23 g.addColorStop(0.25, '#00f'); 24 g.addColorStop(0.25, '#0f0'); 25 g.addColorStop(0.25, '#0f0'); 26 g.addColorStop(0.25, '#0f0'); 27 g.addColorStop(0.25, '#ff0'); 28 g.addColorStop(0.5, '#00f'); 29 g.addColorStop(0.5, '#0f0'); 30 g.addColorStop(0.75, '#00f'); 31 g.addColorStop(0.75, '#f00'); 32 g.addColorStop(0.75, '#ff0'); 33 g.addColorStop(0.5, '#0f0'); 34 g.addColorStop(0.5, '#0f0'); 35 g.addColorStop(0.5, '#ff0'); 36 g.addColorStop(1, '#00f'); 37 ctx.fillStyle = g; 38 ctx.fillRect(0, 0, 200, 50); 39 _assertPixelApprox(canvas, 49,25, 0,0,255,255, 16); 40 _assertPixelApprox(canvas, 51,25, 255,255,0,255, 16); 41 _assertPixelApprox(canvas, 99,25, 0,0,255,255, 16); 42 _assertPixelApprox(canvas, 101,25, 255,255,0,255, 16); 43 _assertPixelApprox(canvas, 149,25, 0,0,255,255, 16); 44 _assertPixelApprox(canvas, 151,25, 255,255,0,255, 16); 45 t.done(); 46 }); 47 done();