# VkPresentRegionKHR(3) Manual Page

## Name

VkPresentRegionKHR - Structure containing rectangular region changed by vkQueuePresentKHR for a given VkImage

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## C Specification

For a given image and swapchain, the region to present is specified by the `VkPresentRegionKHR` structure, which is defined as:

    // Provided by VK_KHR_incremental_present
    typedef struct VkPresentRegionKHR {
        uint32_t                 rectangleCount;
        const VkRectLayerKHR*    pRectangles;
    } VkPresentRegionKHR;

## Members

- `rectangleCount` is the number of rectangles in `pRectangles`, or zero if the entire image has changed and should be presented.

- `pRectangles` is either `NULL` or a pointer to an array of `VkRectLayerKHR` structures. The `VkRectLayerKHR` structure is the framebuffer coordinates, plus layer, of a portion of a presentable image that has changed and must be presented. If non-`NULL`, each entry in `pRectangles` is a rectangle of the given image that has changed since the last image was presented to the given swapchain. The rectangles must be specified relative to VkSurfaceCapabilitiesKHR::`currentTransform`, regardless of the swapchain’s `preTransform`. The presentation engine will apply the `preTransform` transformation to the rectangles, along with any further transformation it applies to the image content.

## Description

Valid Usage (Implicit)

- VUID-VkPresentRegionKHR-pRectangles-parameter
  If `rectangleCount` is not `0`, and `pRectangles` is not `NULL`, `pRectangles` must be a valid pointer to an array of `rectangleCount` valid VkRectLayerKHR structures

## See Also

VK_KHR_incremental_present, VkPresentRegionsKHR, VkRectLayerKHR

## 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 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0