Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 3e12766ced21f82a68008cfaf3114e0dd57c8e2c
https://github.com/WebKit/WebKit/commit/3e12766ced21f82a68008cfaf3114e0dd57c8e2c
Author: Kimmo Kinnunen <[email protected]>
Date: 2026-09-08 (Tue, 08 Sep 2026)
Changed paths:
A
LayoutTests/fast/canvas/webgl/composited-alpha-modes-match-drawImage-expected.html
A LayoutTests/fast/canvas/webgl/composited-alpha-modes-match-drawImage.html
M LayoutTests/platform/glib/TestExpectations
M Source/WTF/wtf/PlatformHave.h
M Source/WTF/wtf/spi/cocoa/IOSurfaceSPI.h
M Source/WebCore/Configurations/AllowedSPI.toml
M Source/WebCore/platform/graphics/cocoa/GraphicsContextGLCocoa.mm
M Source/WebCore/platform/graphics/cocoa/IOSurface.h
M Source/WebCore/platform/graphics/cocoa/IOSurface.mm
Log Message:
-----------
WebGL: premultipliedAlpha=false is composited incorrectly
https://bugs.webkit.org/show_bug.cgi?id=200026
rdar://53509398
Reviewed by Dan Glastonbury.
Implement unpremultiplied compositing by tagging the IOSurface
with the unpremultiplied contents tag.
* Source/WTF/wtf/spi/cocoa/IOSurfaceSPI.h:
* Source/WebCore/Configurations/AllowedSPI.toml:
* Source/WebCore/platform/graphics/cocoa/GraphicsContextGLCocoa.mm:
(WebCore::GraphicsContextGLCocoa::createDrawingBuffer):
* Source/WebCore/platform/graphics/cocoa/IOSurface.h:
* Source/WebCore/platform/graphics/cocoa/IOSurface.mm:
(WebCore::IOSurface::create):
(WebCore::alphaChannelModeValue):
(WebCore::IOSurface::IOSurface):
(WebCore::m_name):
(WebCore::IOSurface::setContentsAlphaPremultiplication):
Canonical link: https://commits.webkit.org/320650@main
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