# vkGetGeneratedCommandsMemoryRequirementsNV(3) Manual Page

## Name

vkGetGeneratedCommandsMemoryRequirementsNV - Retrieve the buffer allocation requirements for generated commands

## C Specification

The generation of commands on the device requires a `preprocess` buffer. To retrieve the memory size and alignment requirements of a particular execution state call:

    void vkGetGeneratedCommandsMemoryRequirementsNV(
        VkDevice                                    device,
        const VkGeneratedCommandsMemoryRequirementsInfoNV* pInfo,
        VkMemoryRequirements2*                      pMemoryRequirements);

## Parameters

- `device` is the logical device that owns the buffer.

- `pInfo` is a pointer to an instance of the `VkGeneratedCommandsMemoryRequirementsInfoNV` structure containing parameters required for the memory requirements query.

- `pMemoryRequirements` points to an instance of the VkMemoryRequirements2 structure in which the memory requirements of the buffer object are returned.

## Description

Valid Usage

- The `VkPhysicalDeviceDeviceGeneratedCommandsFeaturesNV`→`deviceGeneratedCommands` feature must be enabled

Valid Usage (Implicit)

- `device` must be a valid VkDevice handle

- `pInfo` must be a valid pointer to a valid VkGeneratedCommandsMemoryRequirementsInfoNV structure

- `pMemoryRequirements` must be a valid pointer to a VkMemoryRequirements2 structure

## See Also

VkDevice, VkGeneratedCommandsMemoryRequirementsInfoNV, VkMemoryRequirements2

## 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 (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.