Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: d509a5df0092b1c9fff9d30c91d0d4b39ee02e01
https://github.com/WebKit/WebKit/commit/d509a5df0092b1c9fff9d30c91d0d4b39ee02e01
Author: Matt Woodrow <[email protected]>
Date: 2026-01-29 (Thu, 29 Jan 2026)
Changed paths:
M Source/WebKit/GPUProcess/graphics/RemoteGraphicsContext.h
M Source/WebKit/GPUProcess/graphics/RemoteImageBufferGraphicsContext.cpp
M Source/WebKit/GPUProcess/graphics/RemoteImageBufferGraphicsContext.h
Log Message:
-----------
Scrolling is choppy/unresponsive on Google Sheets with Trackpad.
https://bugs.webkit.org/show_bug.cgi?id=306313
<rdar://81178557>
Reviewed by Simon Fraser.
This triggers slow IOSurface read back each frame.
Fix with a manual copy to a temporary surface, and make sure it's flushed both
directions to avoid any copy-on-write behavior from happening.
* Source/WebKit/GPUProcess/graphics/RemoteGraphicsContext.h:
* Source/WebKit/GPUProcess/graphics/RemoteImageBufferGraphicsContext.cpp:
(WebKit::RemoteImageBufferGraphicsContext::drawImageBuffer):
* Source/WebKit/GPUProcess/graphics/RemoteImageBufferGraphicsContext.h:
Canonical link: https://commits.webkit.org/306454@main
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