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<title>Canvas test: 2d.composite.uncovered.image.destination-in</title>
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<h1>2d.composite.uncovered.image.destination-in</h1>
<p class="desc">drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.</p>
<p class="output">Actual output:</p>
<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
<p class="output expectedtext">Expected output:<p><img src="2d.composite.uncovered.image.destination-in.png" class="output expected" id="expected" alt="">
<ul id="d"></ul>
<script>
var t = async_test("drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
_addTest(function(canvas, ctx) {
ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
ctx.fillRect(0, 0, 100, 50);
ctx.globalCompositeOperation = 'destination-in';
ctx.drawImage(document.getElementById('yellow.png'), 40, 40, 10, 10, 40, 50, 10, 10);
_assertPixelApprox(canvas, 15,15, 0,0,0,0, "15,15", "0,0,0,0", 5);
_assertPixelApprox(canvas, 50,25, 0,0,0,0, "50,25", "0,0,0,0", 5);
});
</script>
<img src="/images/yellow.png" id="yellow.png" class="resource">