[webkit-changes] [WebKit/WebKit] 19d688: transforms/3d/hit-testing/overlapping-layers-hit-t...

[mattwoodrow]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 19d6888e06646ddc73a5c9fc1951c7ec560f4d32
      https://github.com/WebKit/WebKit/commit/19d6888e06646ddc73a5c9fc1951c7ec560f4d32
  Author: Matt Woodrow <mattwoodrow at apple.com>
  Date:   2023-06-05 (Mon, 05 Jun 2023)

  Changed paths:
    M LayoutTests/platform/ios/TestExpectations
    M LayoutTests/platform/mac/TestExpectations
    M LayoutTests/transforms/3d/hit-testing/overlapping-layers-hit-test-expected.txt
    M LayoutTests/transforms/3d/hit-testing/overlapping-layers-hit-test.html

  Log Message:
  -----------
  transforms/3d/hit-testing/overlapping-layers-hit-test.html is a constant text failure.
https://bugs.webkit.org/show_bug.cgi?id=255184
<rdar://problem/107775721>

Reviewed by Cameron McCormack.

Hit testing exactly on the intersection boundary of two 3d transformed layers causes issues with floating point precision.

Round the test point out by a pixel in either direction, so that we continue to test the intersection point without requiring infinite precision.

* LayoutTests/platform/ios/TestExpectations:
* LayoutTests/platform/mac/TestExpectations:
* LayoutTests/transforms/3d/hit-testing/overlapping-layers-hit-test-expected.txt:
* LayoutTests/transforms/3d/hit-testing/overlapping-layers-hit-test.html:

Canonical link: https://commits.webkit.org/264891@main