# VkPhysicalDeviceExternalMemoryScreenBufferFeaturesQNX(3) Manual Page

## Name

VkPhysicalDeviceExternalMemoryScreenBufferFeaturesQNX - Structure describing QNX Screen Buffer features that can be supported by an implementation

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## C Specification

The `VkPhysicalDeviceExternalMemoryScreenBufferFeaturesQNX` structure is defined as:

    // Provided by VK_QNX_external_memory_screen_buffer
    typedef struct VkPhysicalDeviceExternalMemoryScreenBufferFeaturesQNX {
        VkStructureType    sType;
        void*              pNext;
        VkBool32           screenBufferImport;
    } VkPhysicalDeviceExternalMemoryScreenBufferFeaturesQNX;

## Members

The members of the `VkPhysicalDeviceExternalMemoryScreenBufferFeaturesQNX` structure describe the following features:

## Description

- `screenBufferImport` indicates whether QNX Screen buffer import functionality is supported. If `screenBufferImport` is `VK_TRUE`, VkDeviceMemory supports importing `_screen_buffer` from applications. In this case, the application is responsible for the resource management of the `_screen_buffer`.

Table 1. Functionality Supported for QNX Screen Buffer Features
Features | Functionality
`screenBufferImport` | VkImportScreenBufferInfoQNX
Always supported1 | vkGetScreenBufferPropertiesQNX, VkScreenBufferPropertiesQNX, VkScreenBufferFormatPropertiesQNX, VkExternalFormatQNX

1

  Functionality in this row is always available.

The Functionality supported for QNX Screen buffer features table summarizes the functionality enabled by the `VkPhysicalDeviceExternalMemoryScreenBufferFeaturesQNX` structure. Each entry in the body of the table summarizes the functionality that can be used when the given features are supported and enabled. This summarizes Valid Usage statements that are added elsewhere in this specification.

If the `VkPhysicalDeviceExternalMemoryScreenBufferFeaturesQNX` structure is included in the `pNext` chain of the VkPhysicalDeviceFeatures2 structure passed to vkGetPhysicalDeviceFeatures2, it is filled in to indicate whether each corresponding feature is supported. `VkPhysicalDeviceExternalMemoryScreenBufferFeaturesQNX` can also be used in the `pNext` chain of VkDeviceCreateInfo to selectively enable these features.

Valid Usage (Implicit)

- VUID-VkPhysicalDeviceExternalMemoryScreenBufferFeaturesQNX-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_EXTERNAL_MEMORY_SCREEN_BUFFER_FEATURES_QNX`

## See Also

VK_QNX_external_memory_screen_buffer, VkBool32, VkStructureType

## Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

## Copyright

Copyright 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0