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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.filter.canvasFilterObject.colorMatrix</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>
<h1>2d.filter.canvasFilterObject.colorMatrix</h1>
<p class="desc">Test the functionality of ColorMatrix filters in CanvasFilter objects</p>
<script>
var t = async_test("Test the functionality of ColorMatrix filters in CanvasFilter objects");
var t_pass = t.done.bind(t);
var t_fail = t.step_func(function(reason) {
throw reason;
});
t.step(function() {
var canvas = new OffscreenCanvas(100, 50);
var ctx = canvas.getContext('2d');
assert_throws_js(TypeError, function() { new CanvasFilter({filter: "colorMatrix", values: undefined}); });
assert_throws_js(TypeError, function() { new CanvasFilter({filter: "colorMatrix", values: "foo"}); });
assert_throws_js(TypeError, function() { new CanvasFilter({filter: "colorMatrix", values: null}); });
assert_throws_js(TypeError, function() { new CanvasFilter({filter: "colorMatrix", values: [1, 2, 3]}); });
assert_throws_js(TypeError, function() { new CanvasFilter({filter: "colorMatrix", values: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, "a"]}); });
assert_throws_js(TypeError, function() { new CanvasFilter({filter: "colorMatrix", values: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, Infinity]}); });
ctx.fillStyle = "#f00";
ctx.filter = new CanvasFilter({filter: "colorMatrix", type: "hueRotate", values: 0});
ctx.fillRect(0, 0, 100, 50);
_assertPixelApprox(canvas, 10,10, 255,0,0,255, "10,10", "255,0,0,255", 2);
ctx.filter = new CanvasFilter({filter: "colorMatrix", type: "hueRotate", values: 90});
ctx.fillRect(0, 0, 100, 50);
_assertPixelApprox(canvas, 10,10, 0,91,0,255, "10,10", "0,91,0,255", 2);
ctx.filter = new CanvasFilter({filter: "colorMatrix", type: "hueRotate", values: 180});
ctx.fillRect(0, 0, 100, 50);
_assertPixelApprox(canvas, 10,10, 0,109,109,255, "10,10", "0,109,109,255", 2);
ctx.filter = new CanvasFilter({filter: "colorMatrix", type: "hueRotate", values: 270});
ctx.fillRect(0, 0, 100, 50);
_assertPixelApprox(canvas, 10,10, 109,18,255,255, "10,10", "109,18,255,255", 2);
ctx.filter = new CanvasFilter({filter: "colorMatrix", type: "saturate", values: 0.5});
ctx.fillRect(0, 0, 100, 50);
_assertPixelApprox(canvas, 10,10, 155,27,27,255, "10,10", "155,27,27,255", 2);
ctx.clearRect(0, 0, 100, 50);
ctx.filter = new CanvasFilter({filter: "colorMatrix", type: "luminanceToAlpha"});
ctx.fillRect(0, 0, 100, 50);
_assertPixelApprox(canvas, 10,10, 0,0,0,54, "10,10", "0,0,0,54", 2);
ctx.filter = new CanvasFilter({filter: "colorMatrix", values: [
0, 0, 0, 0, 0,
1, 1, 1, 1, 0,
0, 0, 0, 0, 0,
0, 0, 0, 1, 0
]});
ctx.fillRect(0, 0, 50, 25);
ctx.fillStyle = "#0f0";
ctx.fillRect(50, 0, 50, 25);
ctx.fillStyle = "#00f";
ctx.fillRect(0, 25, 50, 25);
ctx.fillStyle = "#fff";
ctx.fillRect(50, 25, 50, 25);
_assertPixelApprox(canvas, 10,10, 0,255,0,255, "10,10", "0,255,0,255", 2);
_assertPixelApprox(canvas, 60,10, 0,255,0,255, "60,10", "0,255,0,255", 2);
_assertPixelApprox(canvas, 10,30, 0,255,0,255, "10,30", "0,255,0,255", 2);
_assertPixelApprox(canvas, 60,30, 0,255,0,255, "60,30", "0,255,0,255", 2);
t.done();
});
</script>