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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.drawImage.negativesource</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>
<h1>2d.drawImage.negativesource</h1>
<p class="desc">Negative source width/height represents the correct rectangle</p>
<script>
promise_test(async t => {
var canvas = new OffscreenCanvas(100, 50);
var ctx = canvas.getContext('2d');
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
const response = await fetch('/images/ggrr-256x256.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 100, 78, -100, 50, 0, 0, 50, 50);
ctx.drawImage(bitmap, 100, 128, -100, -50, 50, 0, 50, 50);
_assertPixelApprox(canvas, 1,1, 0,255,0,255, 2);
_assertPixelApprox(canvas, 1,48, 0,255,0,255, 2);
_assertPixelApprox(canvas, 98,1, 0,255,0,255, 2);
_assertPixelApprox(canvas, 98,48, 0,255,0,255, 2);
_assertPixelApprox(canvas, 48,1, 0,255,0,255, 2);
_assertPixelApprox(canvas, 48,48, 0,255,0,255, 2);
_assertPixelApprox(canvas, 51,1, 0,255,0,255, 2);
_assertPixelApprox(canvas, 51,48, 0,255,0,255, 2);
_assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
_assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
}, "Negative source width/height represents the correct rectangle");
</script>
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