[Webkit-unassigned] [Bug 277109] New: REGRESSION (281042 at main): [ macOS ] 2x tiled-drawing/scrolling/overflow/overflow-scrolled-* is flaky failing.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=277109

            Bug ID: 277109
           Summary: REGRESSION (281042 at main): [ macOS ] 2x
                    tiled-drawing/scrolling/overflow/overflow-scrolled-*
                    is flaky failing.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Scrolling
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aviduya at apple.com
                CC: mattwoodrow at apple.com, simon.fraser at apple.com,
                    webkit-bot-watchers-bugzilla at group.apple.com,
                    webkit-bug-importer at group.apple.com

tiled-drawing/scrolling/overflow/overflow-scrolled-down-tile-coverage.html 
tiled-drawing/scrolling/overflow/overflow-scrolled-up-tile-coverage.html 
are flaky failing. 

HISTORY: 
https://results.webkit.org/?platform=mac&style=debug&style=release&suite=layout-tests&suite=layout-tests&test=tiled-drawing%2Fscrolling%2Foverflow%2Foverflow-scrolled-down-tile-coverage.html&test=tiled-drawing%2Fscrolling%2Foverflow%2Foverflow-scrolled-up-tile-coverage.html&version_name=Sonoma&version_name=Ventura

DIFF:
tiled-drawing/scrolling/overflow/overflow-scrolled-down-tile-coverage.html 
@@ -44,12 +44,12 @@
                   (bounds 385.00 3000.00)
                   (drawsContent 1)
                   (visible rect 0.00, 1800.00 385.00 x 512.00)
-                  (coverage rect 0.00, 1544.00 897.00 x 1024.00)
+                  (coverage rect 0.00, 1287.99 385.00 x 1024.01)
                   (intersects coverage rect 1)
                   (contentsScale 1.00)
-                  (tile cache coverage 0, 1536 385 x 1464)
+                  (tile cache coverage 0, 1024 385 x 1536)
                   (tile size 512 x 512)
-                  (top left tile 0, 3 tiles grid 1 x 3)
+                  (top left tile 0, 2 tiles grid 1 x 3)
                   (in window 1)
                 )
               )
tiled-drawing/scrolling/overflow/overflow-scrolled-up-tile-coverage.html
@@ -44,12 +44,12 @@
                   (bounds 385.00 3000.00)
                   (drawsContent 1)
                   (visible rect 0.00, 200.00 385.00 x 512.00)
-                  (coverage rect 0.00, 0.00 897.00 x 1024.00)
+                  (coverage rect 0.00, 200.00 385.00 x 1024.01)
                   (intersects coverage rect 1)
                   (contentsScale 1.00)
-                  (tile cache coverage 0, 0 385 x 1024)
+                  (tile cache coverage 0, 0 385 x 1536)
                   (tile size 512 x 512)
-                  (top left tile 0, 0 tiles grid 1 x 2)
+                  (top left tile 0, 0 tiles grid 1 x 3)
                   (in window 1)
                 )
               )


LINK: 
https://build.webkit.org/results/Apple-Sonoma-Debug-WK2-Tests/281341@main%20(2070)/tiled-drawing/scrolling/overflow/overflow-scrolled-down-tile-coverage-diff.txt
https://build.webkit.org/results/Apple-Sonoma-Debug-WK2-Tests/281341@main%20(2070)/tiled-drawing/scrolling/overflow/overflow-scrolled-up-tile-coverage-diff.txt

DESCRIPTION: 
In 281042 at main changes were made that were around WebCore::GraphicsLayer::setTileCoverage

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