1 files changed, 124 insertions, 0 deletions
diff --git a/src/quick/items/qquickrhiitem.h b/src/quick/items/qquickrhiitem.h
new file mode 100644
index 0000000000..78bfb9fe4b
--- /dev/null
+++ b/src/quick/items/qquickrhiitem.h
@@ -0,0 +1,124 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QQUICKRHIITEM_H
+#define QQUICKRHIITEM_H
+
+#include <QtQuick/QQuickItem>
+
+QT_BEGIN_NAMESPACE
+
+class QQuickRhiItem;
+class QQuickRhiItemPrivate;
+class QQuickRhiItemNode;
+class QRhi;
+class QRhiCommandBuffer;
+class QRhiTexture;
+class QRhiRenderBuffer;
+class QRhiRenderTarget;
+
+class Q_QUICK_EXPORT QQuickRhiItemRenderer
+{
+public:
+    QQuickRhiItemRenderer();
+    virtual ~QQuickRhiItemRenderer();
+
+protected:
+    virtual void initialize(QRhiCommandBuffer *cb) = 0;
+    virtual void synchronize(QQuickRhiItem *item) = 0;
+    virtual void render(QRhiCommandBuffer *cb) = 0;
+
+    void update();
+
+    QRhi *rhi() const;
+    QRhiTexture *colorTexture() const;
+    QRhiRenderBuffer *msaaColorBuffer() const;
+    QRhiTexture *resolveTexture() const;
+    QRhiRenderBuffer *depthStencilBuffer() const;
+    QRhiRenderTarget *renderTarget() const;
+
+private:
+    QQuickRhiItemNode *node;
+    friend class QQuickRhiItem;
+    friend class QQuickRhiItemNode;
+
+    Q_DISABLE_COPY_MOVE(QQuickRhiItemRenderer)
+};
+
+class Q_QUICK_EXPORT QQuickRhiItem : public QQuickItem
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QQuickRhiItem)
+
+    Q_PROPERTY(int sampleCount READ sampleCount WRITE setSampleCount NOTIFY sampleCountChanged FINAL)
+    Q_PROPERTY(TextureFormat colorBufferFormat READ colorBufferFormat WRITE setColorBufferFormat NOTIFY colorBufferFormatChanged FINAL)
+    Q_PROPERTY(bool mirrorVertically READ isMirrorVerticallyEnabled WRITE setMirrorVertically NOTIFY mirrorVerticallyChanged FINAL)
+    Q_PROPERTY(bool alphaBlending READ alphaBlending WRITE setAlphaBlending NOTIFY alphaBlendingChanged FINAL)
+    Q_PROPERTY(int fixedColorBufferWidth READ fixedColorBufferWidth WRITE setFixedColorBufferWidth NOTIFY fixedColorBufferWidthChanged FINAL)
+    Q_PROPERTY(int fixedColorBufferHeight READ fixedColorBufferHeight WRITE setFixedColorBufferHeight NOTIFY fixedColorBufferHeightChanged FINAL)
+    Q_PROPERTY(QSize effectiveColorBufferSize READ effectiveColorBufferSize NOTIFY effectiveColorBufferSizeChanged FINAL)
+
+public:
+    enum class TextureFormat {
+        RGBA8,
+        RGBA16F,
+        RGBA32F,
+        RGB10A2
+    };
+    Q_ENUM(TextureFormat)
+
+    explicit QQuickRhiItem(QQuickItem *parent = nullptr);
+    ~QQuickRhiItem() override;
+
+    int sampleCount() const;
+    void setSampleCount(int samples);
+
+    TextureFormat colorBufferFormat() const;
+    void setColorBufferFormat(TextureFormat format);
+
+    bool isMirrorVerticallyEnabled() const;
+    void setMirrorVertically(bool enable);
+
+    bool alphaBlending() const;
+    void setAlphaBlending(bool enable);
+
+    int fixedColorBufferWidth() const;
+    void setFixedColorBufferWidth(int width);
+    int fixedColorBufferHeight() const;
+    void setFixedColorBufferHeight(int height);
+
+    QSize effectiveColorBufferSize() const;
+
+    bool isTextureProvider() const override;
+    QSGTextureProvider *textureProvider() const override;
+
+Q_SIGNALS:
+    void sampleCountChanged();
+    void colorBufferFormatChanged();
+    void autoRenderTargetChanged();
+    void mirrorVerticallyChanged();
+    void alphaBlendingChanged();
+    void fixedColorBufferWidthChanged();
+    void fixedColorBufferHeightChanged();
+    void effectiveColorBufferSizeChanged();
+
+protected:
+    virtual QQuickRhiItemRenderer *createRenderer() = 0;
+
+    bool isAutoRenderTargetEnabled() const;
+    void setAutoRenderTarget(bool enabled);
+
+    QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *) override;
+    bool event(QEvent *) override;
+    void geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry) override;
+    void releaseResources() override;
+
+private Q_SLOTS:
+    void invalidateSceneGraph();
+
+    friend class QQuickRhiItemNode;
+};
+
+QT_END_NAMESPACE
+
+#endif // QQUICKRHIITEM_H