| <title>Canvas test: 2d.composite.globalAlpha.range</title> |
| <script src="../tests.js"></script> |
| <link rel="stylesheet" href="../tests.css"> |
| <p id="passtext">Pass</p> |
| <p id="failtext">Fail</p> |
| <p class="output">These images should be identical:</p> |
| <canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas> |
| _addTest(function(canvas, ctx) { |
| var a = ctx.globalAlpha; // might not be exactly 0.5, if it is rounded/quantised, so remember for future comparisons |
| _assertEqual(ctx.globalAlpha, a, "ctx.globalAlpha", "a"); |
| _assertEqual(ctx.globalAlpha, a, "ctx.globalAlpha", "a"); |
| _assertEqual(ctx.globalAlpha, 0, "ctx.globalAlpha", "0"); |
| _assertEqual(ctx.globalAlpha, 1, "ctx.globalAlpha", "1"); |