[Webkit-unassigned] [Bug 196200] New: [Texmap][GStreamer]: Map video frames as early as possible and wait via GL sync meta before using texture ids

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=196200

            Bug ID: 196200
           Summary: [Texmap][GStreamer]: Map video frames as early as
                    possible and wait via GL sync meta before using
                    texture ids
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: vjaquez at igalia.com
                CC: bugs-noreply at webkitgtk.org

This report is inspired on https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/commit/b5aa304f201d0805de2b33ab97d293654baa12cd?merge_request_iid=156

We should fence [1] the texture to render in its internal GL context, and wait [2] for its rendering in our application GL context, otherwise the GL pipeline could be working on the texture when painting it.

1. https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glFenceSync.xhtml
2. https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glWaitSync.xhtml

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