qqnxvulkaninstance.h

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// Copyright (C) 2026 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 QQNXVULKANINSTANCE_H

#define QQNXVULKANINSTANCE_H

#if defined(VULKAN_H_) && !defined(VK_USE_PLATFORM_SCREEN_QNX)

#error "vulkan.h included without QNX Screen WSI"

#endif

#define VK_USE_PLATFORM_SCREEN_QNX

#include <QtGui/private/qbasicvulkanplatforminstance_p.h>

#include <QtCore/QLoggingCategory>

QT_BEGIN_NAMESPACE

Q_DECLARE_LOGGING_CATEGORY(lcQpaQnxVulkan)

class QQnxWindow;

class QQnxVulkanInstance : public QBasicPlatformVulkanInstance

public:

    QQnxVulkanInstance(QVulkanInstance *instance);

    ~QQnxVulkanInstance() override;

    void createOrAdoptInstance() override;

    bool supportsPresent(VkPhysicalDevice physicalDevice,

                         uint32_t queueFamilyIndex,

                         QWindow *window) override;

    // presentQueued() is intentionally not overridden: the QNX Screen ICD calls

    // screen_post_window() internally during vkQueuePresentKHR, so no explicit

    // screen_flush_context() is needed (unlike the raster path).

//

    // presentAboutToBeQueued() sets the frame-pacing gate on the window so that

    // requestUpdate() is suppressed until the SCREEN_NOTIFY_UPDATE pulse fires.

    // This mirrors QWaylandVulkanInstance::presentAboutToBeQueued().

    void presentAboutToBeQueued(QWindow *window) override;

    VkSurfaceKHR createSurface(QQnxWindow *window);

private:

    QVulkanInstance *m_instance;

    PFN_vkCreateScreenSurfaceQNX m_createSurface;

    PFN_vkGetPhysicalDeviceScreenPresentationSupportQNX m_getPhysDevScreenPresSupport;

};

QT_END_NAMESPACE

#endif // QQNXVULKANINSTANCE_H