Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: cd808a6b87221d008b61536079a3b26d8aa77795
https://github.com/WebKit/WebKit/commit/cd808a6b87221d008b61536079a3b26d8aa77795
Author: Matt Woodrow <[email protected]>
Date: 2025-05-27 (Tue, 27 May 2025)
Changed paths:
A LayoutTests/fast/css/view-transitions-webgl-expected.html
A LayoutTests/fast/css/view-transitions-webgl.html
M Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp
Log Message:
-----------
WebGL canvas element disappears for one frame drawn to while starting a view
transition.
https://bugs.webkit.org/show_bug.cgi?id=291537
<rdar://149709642>
Reviewed by Simon Fraser.
Drawing the canvas element into a snapshot calls
WebGLRenderingContextBase::prepareForDisplay which clears the drawing buffer.
Running this a second time during the main rendering update results in the
cleared drawing buffer being used instead.
Don't prepare for display for a second time if it's already been done by another
caller.
* LayoutTests/fast/css/view-transitions-webgl-expected.html: Added.
* LayoutTests/fast/css/view-transitions-webgl.html: Added.
* Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp:
(WebCore::WebGLRenderingContextBase::prepareForDisplay):
Canonical link: https://commits.webkit.org/295467@main
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