| <!DOCTYPE html> |
| <!-- DO NOT EDIT! This test has been generated by tools/gentest.py. --> |
| <title>OffscreenCanvas test: 2d.drawImage.negativedest</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/common/canvas-tests.js"></script> |
| |
| <h1>2d.drawImage.negativedest</h1> |
| <p class="desc">Negative destination width/height represents the correct rectangle</p> |
| |
| |
| <script> |
| var t = async_test("Negative destination width/height represents the correct rectangle"); |
| t.step(function() { |
| |
| var offscreenCanvas = new OffscreenCanvas(100, 50); |
| var ctx = offscreenCanvas.getContext('2d'); |
| |
| ctx.fillStyle = '#f00'; |
| ctx.fillRect(0, 0, 100, 50); |
| var promise = new Promise(function(resolve, reject) { |
| var xhr = new XMLHttpRequest(); |
| xhr.open("GET", '/images/ggrr-256x256.png'); |
| xhr.responseType = 'blob'; |
| xhr.send(); |
| xhr.onload = function() { |
| resolve(xhr.response); |
| }; |
| }); |
| promise.then(function(response) { |
| ctx.drawImage(response, 100, 78, 50, 50, 0, 50, 50, -50); |
| ctx.drawImage(response, 100, 128, 50, -50, 100, 50, -50, -50); |
| _assertPixelApprox(offscreenCanvas, 1,1, 0,255,0,255, "1,1", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 1,48, 0,255,0,255, "1,48", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 98,1, 0,255,0,255, "98,1", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 98,48, 0,255,0,255, "98,48", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 48,1, 0,255,0,255, "48,1", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 48,48, 0,255,0,255, "48,48", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 51,1, 0,255,0,255, "51,1", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 51,48, 0,255,0,255, "51,48", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 25,25, 0,255,0,255, "25,25", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 75,25, 0,255,0,255, "75,25", "0,255,0,255", 2); |
| }); |
| |
| t.done(); |
| |
| }); |
| </script> |
