2d.composite.uncovered.fill.destination-in.html (1231B)
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.composite.uncovered.fill.destination-in</title> 5 <meta name="timeout" content="long"> 6 <script src="/resources/testharness.js"></script> 7 <script src="/resources/testharnessreport.js"></script> 8 <script src="/html/canvas/resources/canvas-tests.js"></script> 9 10 <h1>2d.composite.uncovered.fill.destination-in</h1> 11 <p class="desc">fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.</p> 12 13 14 <script> 15 var t = async_test("fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged."); 16 var t_pass = t.done.bind(t); 17 var t_fail = t.step_func(function(reason) { 18 throw reason; 19 }); 20 t.step(function() { 21 22 var canvas = new OffscreenCanvas(100, 50); 23 var ctx = canvas.getContext('2d'); 24 25 ctx.fillStyle = 'rgba(0, 255, 0, 0.5)'; 26 ctx.fillRect(0, 0, 100, 50); 27 ctx.globalCompositeOperation = 'destination-in'; 28 ctx.fillStyle = 'rgba(0, 0, 255, 0.75)'; 29 ctx.translate(0, 25); 30 ctx.fillRect(0, 50, 100, 50); 31 _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5); 32 t.done(); 33 34 }); 35 </script>