// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. // OffscreenCanvas test in a worker:2d.composite.uncovered.image.source-in // Description:drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged. // 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 = 'rgba(0, 255, 255, 0.5)'; ctx.fillRect(0, 0, 100, 50); ctx.globalCompositeOperation = 'source-in'; const response = await fetch('/images/yellow.png') const blob = await response.blob(); const bitmap = await createImageBitmap(blob); ctx.drawImage(bitmap, 40, 40, 10, 10, 40, 50, 10, 10); _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5); }, "drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged."); done();