| 1 | // Copyright (C) 2019 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #include <QtQml/qqmlextensionplugin.h> |
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| 5 | #include <QtQml/qqmlengine.h> |
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| 6 | |
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| 7 | #include "QtWaylandCompositor/private/qwltexturesharingextension_p.h" |
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| 8 | |
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| 9 | /*! |
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| 10 | \internal |
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| 11 | \qmlmodule QtWayland.Compositor.TextureSharingExtension 1 |
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| 12 | \title Qt Wayland Shared Texture Provider |
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| 13 | \ingroup qmlmodules |
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| 14 | \brief Adds a mechanism to share GPU memory |
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| 15 | |
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| 16 | \section2 Summary |
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| 17 | |
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| 18 | This module lets the compositor export graphical resources that can be used by clients, |
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| 19 | without allocating any graphics memory in the client. |
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| 20 | |
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| 21 | \note The texture sharing functionality is considered experimental and |
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| 22 | currently unsupported in Qt 6. |
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| 23 | |
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| 24 | \section2 Usage |
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| 25 | |
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| 26 | This module is imported like this: |
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| 27 | |
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| 28 | \code |
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| 29 | import QtWayland.Compositor.TextureSharingExtension 1.0 |
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| 30 | \endcode |
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| 31 | |
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| 32 | To use this module in a compositor, instantiate the extension object as a child of the compositor object, like this: |
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| 33 | |
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| 34 | |
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| 35 | \code |
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| 36 | WaylandCompositor { |
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| 37 | //... |
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| 38 | TextureSharingExtension { |
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| 39 | } |
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| 40 | } |
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| 41 | \endcode |
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| 42 | |
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| 43 | The sharing functionality is provided through a QQuickImageProvider. Use |
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| 44 | the "image:" scheme for the URL source of the image, followed by the |
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| 45 | identifier \e wlshared, followed by the image file path. For example: |
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| 46 | |
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| 47 | \code |
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| 48 | Image { source: "image://wlshared/wallpapers/mybackground.jpg" } |
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| 49 | \endcode |
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| 50 | |
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| 51 | */ |
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| 52 | |
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| 53 | QT_BEGIN_NAMESPACE |
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| 54 | |
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| 55 | class QWaylandTextureSharingExtensionPlugin : public QQmlExtensionPlugin |
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| 56 | { |
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| 57 | Q_OBJECT |
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| 58 | Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid) |
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| 59 | public: |
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| 60 | QWaylandTextureSharingExtensionPlugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent) {} |
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| 61 | |
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| 62 | void registerTypes(const char *uri) override |
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| 63 | { |
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| 64 | Q_ASSERT(uri == QStringLiteral("QtWayland.Compositor.TextureSharingExtension" )); |
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| 65 | qmlRegisterType<QWaylandTextureSharingExtensionQuickExtension>(uri: "QtWayland.Compositor.TextureSharingExtension" , versionMajor: 1, versionMinor: 0, qmlName: "TextureSharingExtension" ); |
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| 66 | } |
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| 67 | |
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| 68 | void initializeEngine(QQmlEngine *engine, const char *uri) override |
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| 69 | { |
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| 70 | Q_UNUSED(uri); |
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| 71 | engine->addImageProvider("wlshared" , new QWaylandSharedTextureProvider); |
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| 72 | } |
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| 73 | }; |
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| 74 | |
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| 75 | QT_END_NAMESPACE |
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| 76 | |
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| 77 | #include "plugin.moc" |
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| 78 | |
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