2d.gradient.interpolate.overlap2.html (1272B)
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.gradient.interpolate.overlap2</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.gradient.interpolate.overlap2</h1> 10 <p class="desc"></p> 11 12 13 <script> 14 var t = async_test(""); 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 g = ctx.createLinearGradient(0, 0, 100, 0); 25 var ps = [ 0, 1/10, 1/4, 1/3, 1/2, 3/4, 1 ]; 26 for (var p = 0; p < ps.length; ++p) 27 { 28 g.addColorStop(ps[p], '#0f0'); 29 for (var i = 0; i < 15; ++i) 30 g.addColorStop(ps[p], '#f00'); 31 g.addColorStop(ps[p], '#0f0'); 32 } 33 ctx.fillStyle = g; 34 ctx.fillRect(0, 0, 100, 50); 35 _assertPixel(canvas, 1,25, 0,255,0,255); 36 _assertPixel(canvas, 30,25, 0,255,0,255); 37 _assertPixel(canvas, 40,25, 0,255,0,255); 38 _assertPixel(canvas, 60,25, 0,255,0,255); 39 _assertPixel(canvas, 80,25, 0,255,0,255); 40 t.done(); 41 42 }); 43 </script>