Backport texture sharing for NVIDIA

This commit backports the Vulkan server buffer and texture sharing code
from Qt 5.14 to Qt 5.12 as an opt-in feature. To enable, configure with
"-feature-wayland-client-texture-sharing-experimental
-feature-wayland-compositor-texture-sharing-experimental"

Contains code from the following commits:

Add server buffer integration based on Vulkan
(commit a998944b2035c80999db4c1d9f7666c87ba73a86)

Compressed texture support for vulkan server buffers
(commit 4f87adc442a318b9c05fc73ae1020d0df0dfded3)

Implement server-side toOpenGlTexture for Vulkan
(commit 19361e7259f04b08925b1e8e99faf9460770ee7b)

New texture sharing protocol and infrastructure
(commit b09e808bf222984196cebd4447880781e3265714)

Change-Id: I6c36ef7fddcd4db39e80d03a822d89f15eae3434
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Johan Helsing <johan.helsing@qt.io>

src/3rdparty/wayland/extensions/qt-texture-sharing-unstable-v1.xml

@@ -0,0 +1,57 @@
+<protocol name="qt_texture_sharing_unstable_v1">
+
+    <copyright>
+ Copyright (C) 2019 The Qt Company Ltd.
+ Contact: http://www.qt.io/licensing/
+
+ This file is part of the plugins of the Qt Toolkit.
+
+ $QT_BEGIN_LICENSE:BSD$
+ You may use this file under the terms of the BSD license as follows:
+
+ "Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+   * Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+   * Neither the name of The Qt Company Ltd nor the names of its
+     contributors may be used to endorse or promote products derived
+     from this software without specific prior written permission.
+
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+
+ $QT_END_LICENSE$
+    </copyright>
+
+    <interface name="zqt_texture_sharing_v1" version="1">
+        <request name="request_image">
+            <arg name="key" type="string"/>
+        </request>
+        <request name="abandon_image">
+            <arg name="key" type="string"/>
+        </request>
+        <event name="image_failed">
+            <arg name="key" type="string"/>
+            <arg name="error_message" type="string"/>
+        </event>
+        <event name="provide_buffer">
+            <arg name="buffer" type="object" interface="qt_server_buffer"/>
+            <arg name="key" type="string"/>
+        </event>
+    </interface>
+</protocol>

src/3rdparty/wayland/extensions/qt-vulkan-server-buffer-unstable-v1.xml

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="qt_vulkan_server_buffer_unstable_v1">
+    <copyright>
+ Copyright (C) 2019 The Qt Company Ltd.
+ Contact: http://www.qt.io/licensing/
+
+ This file is part of the plugins of the Qt Toolkit.
+
+ $QT_BEGIN_LICENSE:BSD$
+ You may use this file under the terms of the BSD license as follows:
+
+ "Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+   * Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+   * Neither the name of The Qt Company Ltd nor the names of its
+     contributors may be used to endorse or promote products derived
+     from this software without specific prior written permission.
+
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+
+ $QT_END_LICENSE$
+    </copyright>
+  <interface name="zqt_vulkan_server_buffer_v1" version="1">
+    <description summary="Internal protocol for buffer sharing using Vulkan external memory">
+      This protocol is used internally by Qt for implementing the
+      qt_server_buffer extension on hardware that supports Vulkan external memory .
+
+      This protocol is not part of the Qt API.  It exists purely as an
+      implementation detail and may change from version to
+      version without notice, or even be removed.
+    </description>
+    <event name="server_buffer_created">
+      <description summary="vulkan buffer information">
+        Informs the client about a newly created server buffer.
+        The "fd" argument is a POSIX file descriptor representing the
+        underlying resources of a Vulkan device memory object as defined
+        in the GL_EXT_memory_object_fd extension.
+      </description>
+      <arg name="id" type="new_id" interface="qt_server_buffer"/>
+      <arg name="fd" type="fd" summary="GL_EXT_memory_object_fd"/>
+      <arg name="width" type="uint"/>
+      <arg name="height" type="uint"/>
+      <arg name="memory_size" type="uint" summary="size in bytes"/>
+      <arg name="format" type="uint" summary="GL internal format"/>
+    </event>
+  </interface>
+</protocol>

src/plugins/platforms/wayland/configure.json

@@ -75,6 +75,11 @@
             "type": "compile",
             "test": "dmabuf_server_buffer",
             "use": "egl"
+        },
+        "vulkan-server-buffer": {
+            "label": "Vulkan Buffer Sharing",
+            "type": "compile",
+            "test": "vulkan_server_buffer"
         }
     },
 
@@ -123,6 +128,16 @@
             "condition": "features.wayland-client && features.opengl && features.egl && tests.dmabuf-server-buffer",
             "output": [ "privateFeature" ]
         },
+        "wayland-client-texture-sharing-experimental" : {
+            "label": "Texture sharing (experimental)",
+            "autoDetect": "false",
+            "output": [ "privateFeature" ]
+        },
+        "wayland-vulkan-server-buffer": {
+            "label": "Vulkan-based server buffer integration",
+            "condition": "features.wayland-client && features.opengl && features.egl && tests.vulkan-server-buffer && features.wayland-client-texture-sharing-experimental",
+            "output": [ "privateFeature" ]
+        },
         "wayland-shm-emulation-server-buffer": {
             "label": "Shm emulation server buffer integration",
             "condition": "features.wayland-client && features.opengl",
@@ -149,6 +164,8 @@
                 "xcomposite-glx",
                 "wayland-drm-egl-server-buffer",
                 "wayland-libhybris-egl-server-buffer",
+                "wayland-dmabuf-server-buffer",
+                "wayland-vulkan-server-buffer",
                 "wayland-shm-emulation-server-buffer"
             ]
         },

src/plugins/platforms/wayland/hardwareintegration/qwaylandserverbufferintegration_p.h

@@ -70,7 +70,8 @@ class Q_WAYLAND_CLIENT_EXPORT QWaylandServerBuffer
 public:
     enum Format {
         RGBA32,
-        A8
+        A8,
+        Custom
     };
 
     QWaylandServerBuffer();

src/plugins/platforms/wayland/plugins/hardwareintegration/client.pro

@@ -18,3 +18,5 @@ qtConfig(wayland-shm-emulation-server-buffer): \
     SUBDIRS += shm-emulation-server
 qtConfig(wayland-dmabuf-server-buffer): \
     SUBDIRS += dmabuf-server
+qtConfig(wayland-vulkan-server-buffer): \
+    SUBDIRS += vulkan-server

src/plugins/platforms/wayland/plugins/hardwareintegration/vulkan-server/main.cpp

@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtWaylandClient/private/qwaylandserverbufferintegrationplugin_p.h>
+#include "vulkanserverbufferintegration.h"
+
+QT_BEGIN_NAMESPACE
+
+namespace QtWaylandClient {
+
+class VulkanServerBufferPlugin : public QWaylandServerBufferIntegrationPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID QWaylandServerBufferIntegrationFactoryInterface_iid FILE "vulkan-server.json")
+public:
+    QWaylandServerBufferIntegration *create(const QString&, const QStringList&) override;
+};
+
+QWaylandServerBufferIntegration *VulkanServerBufferPlugin::create(const QString& key, const QStringList& paramList)
+{
+    Q_UNUSED(paramList);
+    Q_UNUSED(key);
+    return new VulkanServerBufferIntegration();
+}
+
+}
+
+QT_END_NAMESPACE
+
+#include "main.moc"

src/plugins/platforms/wayland/plugins/hardwareintegration/vulkan-server/vulkan-server.json

@@ -0,0 +1,3 @@
+{
+    "Keys": [ "vulkan-server" ]
+}

src/plugins/platforms/wayland/plugins/hardwareintegration/vulkan-server/vulkan-server.pro

@@ -0,0 +1,15 @@
+# We have a bunch of C code with casts, so we can't have this option
+QMAKE_CXXFLAGS_WARN_ON -= -Wcast-qual
+
+QT += waylandclient-private
+
+include(../../../../hardwareintegration/client/vulkan-server/vulkan-server.pri)
+
+OTHER_FILES += \
+    vulkan-server.json
+
+SOURCES += main.cpp
+
+PLUGIN_TYPE = wayland-graphics-integration-client
+PLUGIN_CLASS_NAME = VulkanServerBufferPlugin
+load(qt_plugin)