277988 2024-08-12 16:37:40 -0700 [view-transitions] Toggling a skew transform causes a position shift 2024-09-02 18:01:10 -0700 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://github.com/web-platform-tests/wpt/pull/47932 InRadar P2 Normal --- 259055 1 ntim mattwoodrow bfulgham mattwoodrow simon.fraser webkit-bug-importer zalan oldest_to_newest 2052222 0 472126 ntim 2024-08-12 16:37:40 -0700 Created attachment 472126 Reduced testcase See testcase 2052223 1 webkit-bug-importer 2024-08-12 16:37:54 -0700 <rdar://problem/133721607> 2052228 2 ntim 2024-08-12 16:42:50 -0700 Also repros with skewY() 2056491 3 mattwoodrow 2024-08-30 01:03:26 -0700 This is a transform interpolation issue. Logging in TransformationMatrix::blend gives the following: Blending: [1.00 0.36 0.00 0.00] [0.00 1.00 0.00 0.00] [0.00 0.00 1.00 0.00] [200.00 200.00 0.00 1.00] to [1.00 0.00 0.00 0.00] [0.00 1.00 0.00 0.00] [0.00 0.00 1.00 0.00] [200.00 200.00 0.00 1.00] at 0.00 blend2 Result: [1.00 0.36 0.00 0.00] [-0.00 1.00 0.00 0.00] [0.00 0.00 1.00 0.00] [240.72 207.11 0.00 1.00] This is specific to the blend2 path, and can be avoided by using 3d transform interpolation (but not easily by authors). Bug 235806 does fix this, but it also changes interpolation in ways that might not match our current rendering. 2056724 4 mattwoodrow 2024-08-30 18:20:32 -0700 Pull request: https://github.com/WebKit/WebKit/pull/32975 2057114 5 ews-feeder 2024-09-02 16:30:12 -0700 Committed 283072@main (6d78055bf6ab): <https://commits.webkit.org/283072@main> Reviewed commits have been landed. Closing PR #32975 and removing active labels. 2057133 6 mattwoodrow 2024-09-02 18:01:10 -0700 Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/47932 472126 2024-08-12 16:37:40 -0700 2024-08-12 16:37:40 -0700 Reduced testcase combined-transition-even-more-reduced.html text/html 764 ntim PCFET0NUWVBFIGh0bWw+CjxodG1sPgogIDxoZWFkPgogICAgPHRpdGxlPlRpbSdzIHdlYnNpdGU8 L3RpdGxlPgogICAgPG1ldGEgY2hhcnNldD0idXRmLTgiPgogICAgPG1ldGEgbmFtZT0idmlld3Bv cnQiIGNvbnRlbnQ9ImluaXRpYWwtc2NhbGU9MSI+CiAgPC9oZWFkPgogIDxib2R5PgogICAgPGJ1 dHRvbiBpZD0ic3dpdGNoc3R5bGUiPlN3aXRjaCBzdHlsZTwvYnV0dG9uPgoKICAgICAgPGRpdiBz dHlsZT0iYmFja2dyb3VuZC1jb2xvcjogcmVkOyIgaWQ9ZGl2PgogICAgICAgIAogICAgICA8L2Rp dj4KICAgIAogICAgPHN0eWxlPgogICAgICAgIGRpdiB7CiAgICAgICAgICAgIHdpZHRoOiAyMDBw eDsKICAgICAgICAgICAgaGVpZ2h0OiAyMDBweDsKICAgICAgICAgICAgdmlldy10cmFuc2l0aW9u LW5hbWU6IGRpdjsKICAgICAgICB9CiAgICAgICAgZGl2LmNoYW5nZWQgewogICAgICAgICAgICB0 cmFuc2Zvcm06IHNrZXdYKC0yMDBkZWcpOwogICAgICAgIH0KICAgICAgICA6OnZpZXctdHJhbnNp dGlvbi1ncm91cCgqKSB7CiAgICAgICAgICAgIGFuaW1hdGlvbi1kdXJhdGlvbjogNXM7CiAgICAg ICAgfQo8L3N0eWxlPgoKPHNjcmlwdD4KICAgIHN3aXRjaHN0eWxlLm9uY2xpY2sgPSAoKSA9PiB7 CiAgICAgICAgZG9jdW1lbnQuc3RhcnRWaWV3VHJhbnNpdGlvbigoKSA9PiB7CiAgICAgICAgICAg IGRpdi5jbGFzc0xpc3QudG9nZ2xlKCJjaGFuZ2VkIik7CiAgICAgICAgfSk7CiAgICB9Cjwvc2Ny aXB0PgogIDwvYm9keT4KPC9odG1sPgo=