wl_eglstream_controller implementation for NVIDIA

This adds a new client buffer integration: wayland-eglstream-controller,
which contains the EGLStream logic from wayland-egl, and additionally
uses NVIDIA's wayland-eglstream-controller protocol to avoid the issue
where the stream is not ready at the time of first buffer attach.

This is not enabled by default. Can be used like this:
QT_WAYLAND_CLIENT_BUFFER_INTEGRATION=wayland-eglstream-controller ./pure-qml

Fixes: QTBUG-71697
Change-Id: I73bb2a8fe9852afe1b5807cbb8c35dc4c7624dad
Reviewed-by: Johan Helsing <johan.helsing@qt.io>

2 files changed, 53 insertions, 1 deletions

diff --git a/src/3rdparty/protocol/qt_attribution.json b/src/3rdparty/protocol/qt_attribution.json
index e5bf91e10..7881e6b0d 100644
--- a/src/3rdparty/protocol/qt_attribution.json
+++ b/src/3rdparty/protocol/qt_attribution.json
@@ -103,5 +103,20 @@ Copyright © 2010-2013 Intel Corporation"
         "LicenseFile": "HPND_LICENSE.txt",
         "Copyright": "Copyright © 2012, 2013 Intel Corporation
 Copyright © 2015, 2016 Jan Arne Petersen"
-    }
+    },
+
+    {
+        "Id": "wayland-eglstream-controller",
+        "Name": "Wayland EGLStream Controller Protocol",
+        "QDocModule": "qtwaylandcompositor",
+        "QtUsage": "Used in the Qt Wayland Compositor",
+        "Files": "wayland-eglstream-controller.xml",
+
+        "Description": "Allows clients to request that the compositor creates its EGLStream.",
+        "Homepage": "https://github.com/NVIDIA/egl-wayland",
+        "LicenseId": "MIT",
+        "License": "MIT License",
+        "LicenseFile": "MIT_LICENSE.txt",
+        "Copyright": "Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved."
+     }
 ]
diff --git a/src/3rdparty/protocol/wl-eglstream-controller.xml b/src/3rdparty/protocol/wl-eglstream-controller.xml
new file mode 100644
index 000000000..dea072e64
--- /dev/null
+++ b/src/3rdparty/protocol/wl-eglstream-controller.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="wl_eglstream_controller">
+  <copyright>
+    Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in
+    all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+  </copyright>
+  <interface name="wl_eglstream_controller" version="1">
+    <request name="attach_eglstream_consumer">
+      <description summary="Create server stream and attach consumer">
+        Creates the corresponding server side EGLStream from the given wl_buffer
+        and attaches a consumer to it.
+      </description>
+      <arg name="wl_surface" type="object" interface="wl_surface"
+        summary="wl_surface corresponds to the client surface associated with
+        newly created eglstream"/>
+      <arg name="wl_resource" type="object" interface="wl_buffer"
+        summary="wl_resource corresponding to an EGLStream"/>
+    </request>
+  </interface>
+</protocol>