[webkit-changes] [WebKit/WebKit] 6d44b6: Cherry-pick 276936 at main (aff02c3a8c4f). https://bu...

[Carlos Bentzen]

  Branch: refs/heads/webkitglib/2.44
  Home:   https://github.com/WebKit/WebKit
  Commit: 6d44b643befab7b5a08419c11f5575ab0fc7d1f2
      https://github.com/WebKit/WebKit/commit/6d44b643befab7b5a08419c11f5575ab0fc7d1f2
  Author: Carlos Bentzen <cadubentzen at igalia.com>
  Date:   2024-04-09 (Tue, 09 Apr 2024)

  Changed paths:
    M Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp

  Log Message:
  -----------
  Cherry-pick 276936 at main (aff02c3a8c4f). https://bugs.webkit.org/show_bug.cgi?id=233955

    [GTK] Video alpha channel doesn't work
    https://bugs.webkit.org/show_bug.cgi?id=233955

    Reviewed by Miguel Gomez.

    Set the ShouldBlend and ShouldPremultiply flags for the texture mapper when
    pushing dma-buf video frames with alpha channel. This replicates what is done
    for the GSTREAMER_GL code path in 238313 at main.

    Covered by media/video-with-alpha.html and manually tested with
    https://zipdox.net/alphawebm/.

    * Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp:
    (WebCore::MediaPlayerPrivateGStreamer::pushDMABufToCompositor):

    Canonical link: https://commits.webkit.org/276936@main



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