| <!DOCTYPE html> |
| <!-- DO NOT EDIT! This test has been generated by tools/gentest.py. --> |
| <title>OffscreenCanvas test: 2d.imageData.object.round</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/common/canvas-tests.js"></script> |
| |
| <h1>2d.imageData.object.round</h1> |
| <p class="desc">ImageData.data rounds numbers with round-to-zero</p> |
| |
| |
| <script> |
| var t = async_test("ImageData.data rounds numbers with round-to-zero"); |
| t.step(function() { |
| |
| var offscreenCanvas = new OffscreenCanvas(100, 50); |
| var ctx = offscreenCanvas.getContext('2d'); |
| |
| var imgdata = ctx.getImageData(0, 0, 10, 10); |
| imgdata.data[0] = 0.499; |
| _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); |
| imgdata.data[0] = 0.5; |
| _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); |
| imgdata.data[0] = 0.501; |
| _assertSame(imgdata.data[0], 1, "imgdata.data[\""+(0)+"\"]", "1"); |
| imgdata.data[0] = 1.499; |
| _assertSame(imgdata.data[0], 1, "imgdata.data[\""+(0)+"\"]", "1"); |
| imgdata.data[0] = 1.5; |
| _assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2"); |
| imgdata.data[0] = 1.501; |
| _assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2"); |
| imgdata.data[0] = 2.5; |
| _assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2"); |
| imgdata.data[0] = 3.5; |
| _assertSame(imgdata.data[0], 4, "imgdata.data[\""+(0)+"\"]", "4"); |
| imgdata.data[0] = 252.5; |
| _assertSame(imgdata.data[0], 252, "imgdata.data[\""+(0)+"\"]", "252"); |
| imgdata.data[0] = 253.5; |
| _assertSame(imgdata.data[0], 254, "imgdata.data[\""+(0)+"\"]", "254"); |
| imgdata.data[0] = 254.5; |
| _assertSame(imgdata.data[0], 254, "imgdata.data[\""+(0)+"\"]", "254"); |
| imgdata.data[0] = 256.5; |
| _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255"); |
| imgdata.data[0] = -0.5; |
| _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); |
| imgdata.data[0] = -1.5; |
| _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); |
| |
| t.done(); |
| |
| }); |
| </script> |