| <!DOCTYPE html> | |
| <script src="/resources/testharness.js"></script> | |
| <script src="/resources/testharnessreport.js"></script> | |
| <script src="/common/canvas-tests.js"></script> | |
| <link rel="help" href="https://html.spec.whatwg.org/#dom-offscreencanvas"> | |
| <script> | |
| test(function() { | |
| let offscreenCanvas = new OffscreenCanvas(100, 100); | |
| let gl = offscreenCanvas.getContext("webgl"); | |
| assert_true(gl instanceof WebGLRenderingContext); | |
| assert_equals(gl.canvas, offscreenCanvas); | |
| }, "Test getContext('webgl')."); | |
| </script> | |