# VK_EXT_present_mode_fifo_latest_ready(3) Manual Page

## Name

VK_EXT_present_mode_fifo_latest_ready - device extension

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## Registered Extension Number

362

## Revision

1

## Ratification Status

Ratified

## Extension and Version Dependencies

VK_KHR_swapchain

## Contact

- Lionel Duc [GitHub]nvlduc

## Extension Proposal

VK_EXT_present_mode_fifo_latest_ready

## Other Extension Metadata

Last Modified Date

  2024-05-28

IP Status

  No known IP claims.

Contributors

  - James Jones, NVIDIA

  - Lionel Duc, NVIDIA

## Description

This device extension adds a new present mode, `VK_PRESENT_MODE_FIFO_LATEST_READY_EXT`.

This tear-free present mode behaves much like `VK_PRESENT_MODE_FIFO_KHR`, except that each vertical blanking period dequeues consecutive present requests until the latest ready is found to update the current image.

While this seems similar in concept to `VK_PRESENT_MODE_MAILBOX_KHR`, the fundamental difference is that the processing of the present requests is done during vblank. From the application perspective, this means for example, that in a flip-based model, a single vblank may cause multiple swapchain images to be released at once, while `VK_PRESENT_MODE_MAILBOX_KHR` may continuously be releasing images as new requests become ready.

This additional present mode is useful when using a time-based present API.

## New Structures

- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:

  - VkPhysicalDevicePresentModeFifoLatestReadyFeaturesEXT

## New Enum Constants

- `VK_EXT_PRESENT_MODE_FIFO_LATEST_READY_EXTENSION_NAME`

- `VK_EXT_PRESENT_MODE_FIFO_LATEST_READY_SPEC_VERSION`

- Extending VkPresentModeKHR:

  - `VK_PRESENT_MODE_FIFO_LATEST_READY_EXT`

- Extending VkStructureType:

  - `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PRESENT_MODE_FIFO_LATEST_READY_FEATURES_EXT`

## Version History

- Revision 1, 2024-05-28 (Lionel Duc)

  - Internal revisions

## See Also

No cross-references are available

## Document Notes

For more information, see the Vulkan Specification

This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.

## Copyright

Copyright 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0