[webkit-changes] [WebKit/WebKit] 3a7c3a: Restored WebGL context is not visible until layout

[Kimmo Kinnunen]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 3a7c3a3c6ad39d3723704d8d5568c35475c4db7b
      https://github.com/WebKit/WebKit/commit/3a7c3a3c6ad39d3723704d8d5568c35475c4db7b
  Author: Kimmo Kinnunen <kkinnunen at apple.com>
  Date:   2023-02-22 (Wed, 22 Feb 2023)

  Changed paths:
    A LayoutTests/webgl/webgl-visible-after-context-restore-expected.html
    A LayoutTests/webgl/webgl-visible-after-context-restore.html
    M Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp

  Log Message:
  -----------
  Restored WebGL context is not visible until layout
https://bugs.webkit.org/show_bug.cgi?id=252737
rdar://104084385

Reviewed by Antti Koivisto.

Force reconfiguration of the layer backing store for WebGL element after
successful restore. The layerContentsDisplayDelegate is per
GraphicsContextGL context, and losing and restoring the context means
the delegate needs to be changed too.

* LayoutTests/webgl/webgl-visible-after-context-restore-expected.html: Added.
* LayoutTests/webgl/webgl-visible-after-context-restore.html: Added.
* Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp:
(WebCore::WebGLRenderingContextBase::maybeRestoreContext):

Canonical link: https://commits.webkit.org/260693@main