canvas-copyPixels.html | Explore in Territory

<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<body>
<script>
test(function(t) {
    var ctx = document.createElement('canvas').getContext('2d');
    
    ctx.fillStyle = "red";
    ctx.fillRect(0,0,50,20);
    ctx.fillStyle = "green";
    ctx.fillRect(50,0,50,20);
    ctx.fillStyle = "blue";
    ctx.fillRect(100,0,50,20);
    
    var data = ctx.getImageData(0,0,150,20);
    ctx.putImageData(data, 0, 20);
    
    var imageData = ctx.getImageData(1, 21, 48, 18);
    var imgdata = imageData.data;
    assert_equals(imgdata[4], 255);
    assert_equals(imgdata[5], 0);
    assert_equals(imgdata[6], 0);
    
    imageData = ctx.getImageData(51, 21, 48, 18);
    imgdata = imageData.data;
    assert_equals(imgdata[4], 0);
    assert_equals(imgdata[5], 128);
    assert_equals(imgdata[6], 0);
    
    imageData = ctx.getImageData(101, 21, 48, 18);
    imgdata = imageData.data;
    assert_equals(imgdata[4], 0);
    assert_equals(imgdata[5], 0);
    assert_equals(imgdata[6], 255);
}, "Test if putImageData gives back the same result as getImageData");
</script>
</body>
chromium/third_party/blink/web_tests/fast/canvas/canvas-copyPixels.html
