2d.shadow.pattern.alpha.worker.js

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/shadows/2d.shadow.pattern.alpha.worker.html - WPT Dashboard Interop Dashboard

// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.

// OffscreenCanvas test in a worker:2d.shadow.pattern.alpha

// Description:Shadows are drawn correctly for partially-transparent fill patterns

// Note:

importScripts("/resources/testharness.js");

importScripts("/html/canvas/resources/canvas-tests.js");

promise_test(async t => {

  var canvas = new OffscreenCanvas(100, 50);

  var ctx = canvas.getContext('2d');

  var response = await fetch('/images/transparent50.png')

  var blob = await response.blob();

  var img = await createImageBitmap(blob);

  var pattern = ctx.createPattern(img, 'repeat');

  ctx.fillStyle = '#f00';

  ctx.fillRect(0, 0, 100, 50);

  ctx.shadowOffsetY = 50;

  ctx.shadowColor = '#00f';

  ctx.fillStyle = pattern;

  ctx.fillRect(0, -50, 100, 50);

  _assertPixelApprox(canvas, 50,25, 127,0,127,255, 2);

}, "Shadows are drawn correctly for partially-transparent fill patterns");

done();