# vkCmdPreprocessGeneratedCommandsNV(3) Manual Page

## Name

vkCmdPreprocessGeneratedCommandsNV - Performs preprocessing for generated commands

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## C Specification

Commands can be preprocessed prior execution using the following command:

    // Provided by VK_NV_device_generated_commands
    void vkCmdPreprocessGeneratedCommandsNV(
        VkCommandBuffer                             commandBuffer,
        const VkGeneratedCommandsInfoNV*            pGeneratedCommandsInfo);

## Parameters

- `commandBuffer` is the command buffer which does the preprocessing.

- `pGeneratedCommandsInfo` is a pointer to a VkGeneratedCommandsInfoNV structure containing parameters affecting the preprocessing step.

## Description

Valid Usage

- VUID-vkCmdPreprocessGeneratedCommandsNV-commandBuffer-02974
  `commandBuffer` must not be a protected command buffer

- VUID-vkCmdPreprocessGeneratedCommandsNV-pGeneratedCommandsInfo-02927
  `pGeneratedCommandsInfo``s `indirectCommandsLayout` must have been created with the `VK_INDIRECT_COMMANDS_LAYOUT_USAGE_EXPLICIT_PREPROCESS_BIT_NV` bit set

- VUID-vkCmdPreprocessGeneratedCommandsNV-deviceGeneratedCommands-02928
  The `VkPhysicalDeviceDeviceGeneratedCommandsFeaturesNV`::`deviceGeneratedCommands` feature must be enabled

Valid Usage (Implicit)

- VUID-vkCmdPreprocessGeneratedCommandsNV-commandBuffer-parameter
  `commandBuffer` must be a valid VkCommandBuffer handle

- VUID-vkCmdPreprocessGeneratedCommandsNV-pGeneratedCommandsInfo-parameter
  `pGeneratedCommandsInfo` must be a valid pointer to a valid VkGeneratedCommandsInfoNV structure

- VUID-vkCmdPreprocessGeneratedCommandsNV-commandBuffer-recording
  `commandBuffer` must be in the recording state

- VUID-vkCmdPreprocessGeneratedCommandsNV-commandBuffer-cmdpool
  The `VkCommandPool` that `commandBuffer` was allocated from must support graphics, or compute operations

- VUID-vkCmdPreprocessGeneratedCommandsNV-renderpass
  This command must only be called outside of a render pass instance

- VUID-vkCmdPreprocessGeneratedCommandsNV-videocoding
  This command must only be called outside of a video coding scope

Host Synchronization

- Host access to `commandBuffer` must be externally synchronized

- Host access to the `VkCommandPool` that `commandBuffer` was allocated from must be externally synchronized

Command Properties

Command Buffer Levels | Render Pass Scope | Video Coding Scope | Supported Queue Types | Command Type
--- | --- | --- | --- | ---
Primary Secondary | Outside | Outside | Graphics Compute | Action

## See Also

VK_NV_device_generated_commands, VkCommandBuffer, VkGeneratedCommandsInfoNV

## 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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0