[webkit-changes] [WebKit/WebKit] a05188: [WebXR] Fix immersive VR rendering for shared layout.

[Dan Glastonbury]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: a05188f93c2ae18909898ae4fbef87323b0f5289
      https://github.com/WebKit/WebKit/commit/a05188f93c2ae18909898ae4fbef87323b0f5289
  Author: Dan Glastonbury <djg at apple.com>
  Date:   2024-07-09 (Tue, 09 Jul 2024)

  Changed paths:
    M Source/WebCore/Modules/webxr/WebXROpaqueFramebufferCocoa.cpp

  Log Message:
  -----------
  [WebXR] Fix immersive VR rendering for shared layout.
https://bugs.webkit.org/show_bug.cgi?id=276402
rdar://131356393

Reviewed by Mike Wyrzykowski.

After https://commits.webkit.org/280523@main, WebXR immersive sessions render
black in simulator.

Outside of the simulator, we always blit from a staging texture to the final
output because we need to place each eye into the correct layer of a Metal
texture. In the simulator, the code tried to optimize to avoid the extra
copy. To fix the issue, I've made the shared layout case work exactly like the
layered layout case.

* Source/WebCore/Modules/webxr/WebXROpaqueFramebufferCocoa.cpp:
(WebCore::WebXROpaqueFramebuffer::blitShared):
(WebCore::WebXROpaqueFramebuffer::setupFramebuffer):

Canonical link: https://commits.webkit.org/280805@main



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