| <!DOCTYPE html> |
| <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> |
| <meta charset="UTF-8"> |
| <title>OffscreenCanvas test: 2d.composite.canvas.source-over</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/html/canvas/resources/canvas-tests.js"></script> |
| |
| <h1>2d.composite.canvas.source-over</h1> |
| <p class="desc"></p> |
| |
| |
| <script> |
| promise_test(async t => { |
| |
| var canvas = new OffscreenCanvas(100, 50); |
| var ctx = canvas.getContext('2d'); |
| |
| ctx.fillStyle = 'rgba(0, 255, 255, 0.5)'; |
| ctx.fillRect(0, 0, 100, 50); |
| ctx.globalCompositeOperation = 'source-over'; |
| const canvas2 = new OffscreenCanvas(canvas.width, canvas.height); |
| const ctx2 = canvas2.getContext('2d'); |
| const response = await fetch('/images/yellow75.png') |
| const blob = await response.blob(); |
| const bitmap = await createImageBitmap(blob); |
| ctx2.drawImage(bitmap, 0, 0); |
| ctx.drawImage(canvas2, 0, 0); |
| _assertPixelApprox(canvas, 50,25, 219,255,36,223, 5); |
| |
| }, ""); |
| </script> |
