NEW 263862
Filters are recalculated for each clipping area containing a webgl canvas 
https://bugs.webkit.org/show_bug.cgi?id=263862
Summary Filters are recalculated for each clipping area containing a webgl canvas
Kaiido
Reported 2023-10-29 19:48:12 PDT
Created attachment 468406 [details] photo of the issue See this codepen: https://codepen.io/_-0-_/pen/RwvaPNN). When clipping a filtered WebGL canvas element the filter seems to be calculated from the clipped area instead of from the element's box. This does happen only for when there is a WebGL canvas inside the filtered content, i.e. when the canvas requests a 2D context, it works as expected. Also, it seems the filter is applied once more on the <body> tag, as can be seen when shrinking the frame vertically in the liked demo. And one more peculiarity, trying to take a screenshot (macOS "Screenshot" app), the bug disappears from the screenshot, so I attach a photo of what I see, and beware that automated tests may be incorrect.
Attachments
photo of the issue (270.83 KB, image/jpeg)
2023-10-29 19:48 PDT, Kaiido 		no flags
Details
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Radar WebKit Bug Importer
Comment 1 2023-10-30 11:44:45 PDT
<rdar://problem/117697558>
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