VK_KHR_draw_indirect_count(3)

# VK_KHR_draw_indirect_count(3) Manual Page

## Name

VK_KHR_draw_indirect_count - device extension

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## Registered Extension Number

170

## Revision

1

## Extension and Version Dependencies

- Requires support for Vulkan 1.0

## Deprecation state

- Promoted to Vulkan 1.2

## Contact

- Piers Daniell pdaniell-nv

## Other Extension Metadata

Last Modified Date

  2017-08-25

Interactions and External Dependencies

  - Promoted to Vulkan 1.2 Core

IP Status

  No known IP claims.

Contributors

  - Matthaeus G. Chajdas, AMD

  - Derrick Owens, AMD

  - Graham Sellers, AMD

  - Daniel Rakos, AMD

  - Dominik Witczak, AMD

  - Piers Daniell, NVIDIA

## Description

This extension is based off the `VK_AMD_draw_indirect_count` extension. This extension allows an application to source the number of draws for indirect drawing calls from a buffer.

Applications might want to do culling on the GPU via a compute shader prior to drawing. This enables the application to generate an arbitrary number of drawing commands and execute them without host intervention.

## Promotion to Vulkan 1.2

All functionality in this extension is included in core Vulkan 1.2, with the KHR suffix omitted. However, if Vulkan 1.2 is supported and this extension is not, the entry points vkCmdDrawIndirectCount and vkCmdDrawIndexedIndirectCount are optional. The original type, enum and command names are still available as aliases of the core functionality.

## New Commands

- vkCmdDrawIndexedIndirectCountKHR

- vkCmdDrawIndirectCountKHR

## New Enum Constants

- `VK_KHR_DRAW_INDIRECT_COUNT_EXTENSION_NAME`

- `VK_KHR_DRAW_INDIRECT_COUNT_SPEC_VERSION`

## Version History

- Revision 1, 2017-08-25 (Piers Daniell)

  - Initial draft based off VK_AMD_draw_indirect_count

## See Also

vkCmdDrawIndexedIndirectCountKHR, vkCmdDrawIndirectCountKHR

## 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 2014-2022 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0