[Webkit-unassigned] [Bug 191827] New: cannot turn off antialiasing in webGL

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=191827

            Bug ID: 191827
           Summary: cannot turn off antialiasing in webGL
           Product: WebKit
           Version: Safari 12
          Hardware: Macintosh
                OS: macOS 10.13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: blaine at blainebell.org
                CC: dino at apple.com

Created attachment 355246

  --> https://bugs.webkit.org/attachment.cgi?id=355246&action=review

attached html and checker.png image that shows pixelated works for the img but not canvas

I am trying to turn off antialiasing for a WebGL context inside Safari and cannot do so.  Attached is an HTML file that can reproduce this problem, it works just fine on Chrome and FireFox.  This example simply opens a WebGL context and draws a rectangle.  The output in Safari has the edges antialiased, which it should not.  Either this is a bug, or I am missing something that I should be doing that is specific to Safari/Webkit?  Please let me know if either way.

I set the "antialias" option to false that is passed into glCanvas.getContext("webgl", options);, and I also use the style flags that I have found resources on the web/stackoverflow that normally turns antialiasing off.

The exact versions I am using are  Safari Version 12.0.1 (13606.2.104.1.2) on OSX 10.13.6.

Thanks!

Blaine

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