qopenxrgraphics_opengl_p.h

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// Copyright (C) 2024 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QOPENXRGRAPHICSOPENGL_H

#define QOPENXRGRAPHICSOPENGL_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtQuick3DXr/private/qabstractopenxrgraphics_p.h>

#include <QtQuick3DXr/private/qopenxrplatform_p.h>

QT_BEGIN_NAMESPACE

class QRhiTexture;

class QOpenXRGraphicsOpenGL : public QAbstractOpenXRGraphics

public:

    QOpenXRGraphicsOpenGL();

    enum PlatformType { PLATFORM_UNSUPPORTED, PLATFORM_EGL, PLATFORM_WAYLAND, PLATFORM_XLIB, PLATFORM_WIN32 };

    bool initialize(const QVector<XrExtensionProperties> &extensions) override;

    QVector<const char *> getRequiredExtensions() const override;

    const XrBaseInStructure *handle() const override;

    bool setupGraphics(const XrInstance &instance, XrSystemId &systemId, const QQuickGraphicsConfiguration &quickConfig) override;

    bool finializeGraphics(QRhi *rhi) override;

    int64_t colorSwapchainFormat(const QVector<int64_t> &swapchainFormats) const override;

    int64_t depthSwapchainFormat(const QVector<int64_t> &swapchainFormats) const override;

    QVector<XrSwapchainImageBaseHeader*> allocateSwapchainImages(int count, XrSwapchain swapchain) override;

    QQuickRenderTarget renderTarget(const XrSwapchainSubImage &subImage, const XrSwapchainImageBaseHeader *swapchainImage,

                                    quint64 swapchainFormat, int samples, int arraySize,

                                    const XrSwapchainImageBaseHeader *depthSwapchainImage, quint64 depthSwapchainFormat) const override;

    void setupWindow(QQuickWindow *window) override;

    QRhi *rhi() const override { return m_rhi; }

    void releaseResources() override;

private:

    enum PlatformType m_selectedPlatform = PLATFORM_UNSUPPORTED;

    QVector<const char *> m_requiredExtensions;

    std::unique_ptr<XrBaseInStructure, decltype(&std::free)> m_graphicsBinding = { nullptr, std::free };

    QMap<XrSwapchain, QVector<XrSwapchainImageOpenGLKHR>> m_swapchainImageBuffer;

    XrGraphicsRequirementsOpenGLKHR m_graphicsRequirements{};

    QWindow *m_window = nullptr;

    QRhi *m_rhi = nullptr;

    mutable QRhiTexture *m_depthTexture = nullptr;

};

QT_END_NAMESPACE

#endif // QOPENXRGRAPHICSOPENGL_H