| <!DOCTYPE html> |
| <!-- DO NOT EDIT! This test has been generated by tools/gentest.py. --> |
| <title>OffscreenCanvas test: 2d.imageData.get.nonpremul</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/common/canvas-tests.js"></script> |
| |
| <h1>2d.imageData.get.nonpremul</h1> |
| <p class="desc">getImageData() returns non-premultiplied colours</p> |
| |
| |
| <script> |
| var t = async_test("getImageData() returns non-premultiplied colours"); |
| t.step(function() { |
| |
| var offscreenCanvas = new OffscreenCanvas(100, 50); |
| var ctx = offscreenCanvas.getContext('2d'); |
| |
| ctx.fillStyle = 'rgba(255, 255, 255, 0.5)'; |
| ctx.fillRect(0, 0, 100, 50); |
| var imgdata = ctx.getImageData(10, 10, 10, 10); |
| _assert(imgdata.data[0] > 200, "imgdata.data[\""+(0)+"\"] > 200"); |
| _assert(imgdata.data[1] > 200, "imgdata.data[\""+(1)+"\"] > 200"); |
| _assert(imgdata.data[2] > 200, "imgdata.data[\""+(2)+"\"] > 200"); |
| _assert(imgdata.data[3] > 100, "imgdata.data[\""+(3)+"\"] > 100"); |
| _assert(imgdata.data[3] < 200, "imgdata.data[\""+(3)+"\"] < 200"); |
| |
| t.done(); |
| |
| }); |
| </script> |
