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Issue 1983863002:
Inflate dirty rect by 1 pixel on a high DPI display (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master| Index: third_party/WebKit/ManualTests/canvas-ClearRect-hidpi.html |
| diff --git a/third_party/WebKit/ManualTests/canvas-ClearRect-hidpi.html b/third_party/WebKit/ManualTests/canvas-ClearRect-hidpi.html |
| new file mode 100644 |
| index 0000000000000000000000000000000000000000..ccf6dd0ade38a30c71bc8de49356957a0b817d5f |
| --- /dev/null |
| +++ b/third_party/WebKit/ManualTests/canvas-ClearRect-hidpi.html |
| @@ -0,0 +1,31 @@ |
| +<!DOCTYPE html> |
| +<html> |
| +<body> |
| +<p> |
| +Test for crbug.com/609820. When running this test on Mac with retina display, |
| +the result should be a clear canvas with no artifact. |
|
Justin Novosad
2016/05/16 17:08:54
... after a few seconds.
|
| +</p> |
| +<canvas id='output' width='300' height='250'></canvas> |
| +<script> |
| +var repeat = 350; |
| +var x = y = 0; |
| +var canvas = document.getElementById("output"); |
| +var ctx = canvas.getContext('2d'); |
| +ctx.fillStyle = "#FF0000"; |
| + |
| +requestAnimationFrame(animate); |
| + |
| +function animate() |
| +{ |
| + ctx.clearRect(x, y, 50, 50); |
| + x++; |
| + y++; |
| + ctx.fillRect(x, y, 50, 50); |
| + repeat--; |
| + if (repeat > 0) |
| + requestAnimationFrame(animate); |
| +} |
| +</script> |
| +</body> |
| +</html> |
| + |
