Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 223cdceb76379ccf7c9094c58312bbd5ec3fb944
https://github.com/WebKit/WebKit/commit/223cdceb76379ccf7c9094c58312bbd5ec3fb944
Author: Simon Fraser <simon.fra...@apple.com>
Date: 2023-08-10 (Thu, 10 Aug 2023)
Changed paths:
M Source/WebCore/platform/graphics/cocoa/IOSurface.mm
Log Message:
-----------
In some macOS VM configurations, layer content is sometimes missing
https://bugs.webkit.org/show_bug.cgi?id=260003
<rdar://112875397>
Reviewed by Tim Horton.
In some macOS VM configs without accelerated graphics,
IOSurfaceGetPropertyMaximum()
returns INT_MAX. This resulted in `TileController::computeTileSize()` sometimes
computing
negative tile widths, which resulted in missing content.
Fix by clamping to fallbackMaxSurfaceDimension(), which is something we already
did on iOS;
on macOS this will clamp to a max of 32K, which prevents the INT_MAX causing
math errors.
* Source/WebCore/platform/graphics/cocoa/IOSurface.mm:
(WebCore::computeMaximumSurfaceSize):
Canonical link: https://commits.webkit.org/266767@main
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