2d.state.saverestore.stackdepth.html (1026B)
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.state.saverestore.stackdepth</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.state.saverestore.stackdepth</h1> 10 <p class="desc">save()/restore() stack depth is not unreasonably limited</p> 11 12 13 <script> 14 var t = async_test("save()/restore() stack depth is not unreasonably limited"); 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 limit = 512; 25 for (var i = 1; i < limit; ++i) 26 { 27 ctx.save(); 28 ctx.lineWidth = i; 29 } 30 for (var i = limit-1; i > 0; --i) 31 { 32 _assertSame(ctx.lineWidth, i, "ctx.lineWidth", "i"); 33 ctx.restore(); 34 } 35 t.done(); 36 37 }); 38 </script>