| // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. |
| // OffscreenCanvas test in a worker:2d.composite.globalAlpha.imagepattern |
| // Description: |
| // 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'); |
| |
| ctx.fillStyle = '#0f0'; |
| ctx.fillRect(0, 0, 100, 50); |
| const response = await fetch('/images/red.png'); |
| const blob = await response.blob(); |
| const bitmap = await createImageBitmap(blob); |
| |
| ctx.fillStyle = ctx.createPattern(bitmap, 'no-repeat'); |
| // Avoiding any potential alpha = 0 optimisations. |
| ctx.globalAlpha = 0.01; |
| ctx.fillRect(0, 0, 100, 50); |
| _assertPixelApprox(canvas, 50,25, 2,253,0,255, 2); |
| t.done(); |
| }, ""); |
| done(); |