[Webkit-unassigned] [Bug 242847] New: iOS 16 beta3 , canvas is blurry in some case.

Sun Jul 17 17:58:01 PDT 2022

https://bugs.webkit.org/show_bug.cgi?id=242847

            Bug ID: 242847
           Summary: iOS 16 beta3 , canvas is blurry in some case.
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: acery.ycy at antgroup.com
                CC: dino at apple.com

Created attachment 460966

  --> https://bugs.webkit.org/attachment.cgi?id=460966&action=review

screenshot

We found that canvas of the same size is more blurry in iOS 16 Beta 3. Here's the code:

```
<!DOCTYPE html>
<html lang="en">
<head>
  <title>Document</title>
  <style>
    #app {
      height: 586px;
      width: 1170px;
    }
  </style>
</head>
<body>
  <canvas height="586px" width="1170px" id="app"></canvas>
  <script>
    const el = document.getElementById('app');
    const ctx = el.getContext('2d');

    ctx.font = '80px Arial';

    ctx.fillText('Hello World', 100, 100)
  </script>
</body>
</html>
```

Oddly enough, if you set the height of the code above to 585 px(one pixel less), the text on the canvas becomes clear. This will only happen with iOS Beta 3.

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