third_party/WebKit/LayoutTests/fast/canvas/canvas-ClearRect-hidpi.html - Issue 1983863002: Inflate dirty rect by 1 pixel on a high DPI display

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Side by Side Diff: third_party/WebKit/LayoutTests/fast/canvas/canvas-ClearRect-hidpi.html

Issue 1983863002: Inflate dirty rect by 1 pixel on a high DPI display (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: adding layout test for debugging Created 4 years, 7 months ago

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	1 <!DOCTYPE html>

	2 <html>

	3 <body>

	4 <canvas id='output' width='300' height='250'></canvas>

	5 <script>

	6 if (window.testRunner) {

	7 testRunner.waitUntilDone();

	8 testRunner.setBackingScaleFactor(2, function() { init(); });
	Justin Novosad 2016/05/16 15:56:49 function() { init(); } -> init function() { init(); } -> init xidachen 2016/05/16 16:53:15 I tried this, but that doesn't work either. So I m Show quoted text On 2016/05/16 15:56:49, Justin Novosad wrote: > function() { init(); } -> init I tried this, but that doesn't work either. So I move the test to ManualTests/.
	9 }

	10

	11 var repeat = 500;

	12 var x = y = 0;

	13 var canvas = document.getElementById("output");

	14 var ctx = canvas.getContext('2d');

	15 ctx.fillStyle = "#FF0000";

	16

	17 function init() {

	18 requestAnimationFrame(animate);

	19 }

	20

	21 function animate()

	22 {

	23 ctx.clearRect(x, y, 50, 50);

	24 x++;

	25 y++;

	26 ctx.fillRect(x, y, 50, 50);

	27 repeat--;

	28 if (repeat == 0 && window.testRunner)

	29 testRunner.notifyDone();

	30 if (repeat > 0)

	31 requestAnimationFrame(animate);

	32 }

	33 </script>

	34 </body>

	35 </html>

	36

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