# VkIndirectCommandsLayoutUsageFlagBitsEXT(3) Manual Page

## Name

VkIndirectCommandsLayoutUsageFlagBitsEXT - Bitmask specifying allowed usage of an indirect commands layout

Loading… please wait.

## C Specification

Bits which can be set in VkIndirectCommandsLayoutCreateInfoEXT::`flags`, specifying usage hints of an indirect command layout, are:

    // Provided by VK_EXT_device_generated_commands
    typedef enum VkIndirectCommandsLayoutUsageFlagBitsEXT {
        VK_INDIRECT_COMMANDS_LAYOUT_USAGE_EXPLICIT_PREPROCESS_BIT_EXT = 0x00000001,
        VK_INDIRECT_COMMANDS_LAYOUT_USAGE_UNORDERED_SEQUENCES_BIT_EXT = 0x00000002,
    } VkIndirectCommandsLayoutUsageFlagBitsEXT;

## Description

- `VK_INDIRECT_COMMANDS_LAYOUT_USAGE_EXPLICIT_PREPROCESS_BIT_EXT` specifies that the layout is always used with the manual preprocessing step through calling vkCmdPreprocessGeneratedCommandsEXT and executed by vkCmdExecuteGeneratedCommandsEXT with `isPreprocessed` set to `VK_TRUE`.

- `VK_INDIRECT_COMMANDS_LAYOUT_USAGE_UNORDERED_SEQUENCES_BIT_EXT` specifies that the processing of sequences will happen at an implementation-dependent order, which is not guaranteed to be deterministic using the same input data. This flag is ignored when the `shaderStages` is `VK_SHADER_STAGE_COMPUTE_BIT` as it is implied that the dispatch sequence is always unordered.

## See Also

VK_EXT_device_generated_commands, VkIndirectCommandsLayoutUsageFlagsEXT

## 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