VkPresentInfoKHR

The VkPresentInfoKHR structure is defined as:

typedef struct VkPresentInfoKHR {
    VkStructureType sType;
    const void* pNext;
    uint32_t waitSemaphoreCount;
    const VkSemaphore* pWaitSemaphores;
    uint32_t swapchainCount;
    const VkSwapchainKHR* pSwapchains;
    const uint32_t* pImageIndices;
    VkResult* pResults;
} VkPresentInfoKHR;

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• waitSemaphoreCount is the number of semaphores to wait for before issuing the present request. The number may be zero.
• pWaitSemaphores is NULL or a pointer to an array of VkSemaphore objects with waitSemaphoreCount entries, and specifies the semaphores to wait for before issuing the present request.
• swapchainCount is the number of swapchains being presented to by this command.
• pSwapchains is a pointer to an array of VkSwapchainKHR objects with swapchainCount entries.
• pImageIndices is a pointer to an array of indices into the array of each swapchain’s presentable images, with swapchainCount entries. Each entry in this array identifies the image to present on the corresponding entry in the pSwapchains array.
• pResults is a pointer to an array of VkResult typed elements with swapchainCount entries. Applications that do not need per-swapchain results can use NULL for pResults. If non-NULL, each entry in pResults will be set to the VkResult for presenting the swapchain corresponding to the same index in pSwapchains.

Before an application can present an image, the image’s layout must be transitioned to the VK_IMAGE_LAYOUT_PRESENT_SRC_KHR layout, or for a shared presentable image the VK_IMAGE_LAYOUT_SHARED_PRESENT_KHR layout.