diff options
Diffstat (limited to 'testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unchanged.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unchanged.html | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unchanged.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unchanged.html new file mode 100644 index 0000000000..d78fa4e035 --- /dev/null +++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unchanged.html @@ -0,0 +1,44 @@ +<!DOCTYPE html> +<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> +<title>OffscreenCanvas test: 2d.imageData.put.unchanged</title> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="/html/canvas/resources/canvas-tests.js"></script> + +<h1>2d.imageData.put.unchanged</h1> +<p class="desc">putImageData(getImageData(...), ...) has no effect</p> + + +<script> +var t = async_test("putImageData(getImageData(...), ...) has no effect"); +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'); + + var i = 0; + for (var y = 0; y < 16; ++y) { + for (var x = 0; x < 16; ++x, ++i) { + ctx.fillStyle = 'rgba(' + i + ',' + (Math.floor(i*1.5) % 256) + ',' + (Math.floor(i*23.3) % 256) + ',' + (i/256) + ')'; + ctx.fillRect(x, y, 1, 1); + } + } + var imgdata1 = ctx.getImageData(0.1, 0.2, 15.8, 15.9); + var olddata = []; + for (var i = 0; i < imgdata1.data.length; ++i) + olddata[i] = imgdata1.data[i]; + + ctx.putImageData(imgdata1, 0.1, 0.2); + + var imgdata2 = ctx.getImageData(0.1, 0.2, 15.8, 15.9); + for (var i = 0; i < imgdata2.data.length; ++i) { + _assertSame(olddata[i], imgdata2.data[i], "olddata[\""+(i)+"\"]", "imgdata2.data[\""+(i)+"\"]"); + } + t.done(); + +}); +</script> |