diff options
Diffstat (limited to 'testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.copy.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.copy.html | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.copy.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.copy.html new file mode 100644 index 0000000000..10a9960559 --- /dev/null +++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.copy.html @@ -0,0 +1,32 @@ +<!DOCTYPE html> +<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> +<title>OffscreenCanvas test: 2d.composite.uncovered.nocontext.copy</title> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="/html/canvas/resources/canvas-tests.js"></script> + +<h1>2d.composite.uncovered.nocontext.copy</h1> +<p class="desc">drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.</p> + + +<script> +var t = async_test("drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged."); +var t_pass = t.done.bind(t); +var t_fail = t.step_func(function(reason) { + throw reason; +}); +t.step(function() { + + 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 = 'copy'; + var offscreenCanvas2 = new OffscreenCanvas(100, 50); + ctx.drawImage(offscreenCanvas2, 0, 0); + _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5); + t.done(); + +}); +</script> |