# vkCmdCopyMicromapEXT(3) Manual Page

## Name

vkCmdCopyMicromapEXT - Copy a micromap

Loading… please wait.

## C Specification

To copy a micromap call:

    // Provided by VK_EXT_opacity_micromap
    void vkCmdCopyMicromapEXT(
        VkCommandBuffer                             commandBuffer,
        const VkCopyMicromapInfoEXT*                pInfo);

## Parameters

- `commandBuffer` is the command buffer into which the command will be recorded.

- `pInfo` is a pointer to a VkCopyMicromapInfoEXT structure defining the copy operation.

## Description

This command copies the `pInfo->src` micromap to the `pInfo->dst` micromap in the manner specified by `pInfo->mode`.

Accesses to `pInfo->src` and `pInfo->dst` must be synchronized with the `VK_PIPELINE_STAGE_2_MICROMAP_BUILD_BIT_EXT` pipeline stage and an access type of `VK_ACCESS_2_MICROMAP_READ_BIT_EXT` or `VK_ACCESS_2_MICROMAP_WRITE_BIT_EXT` as appropriate.

Valid Usage

- VUID-vkCmdCopyMicromapEXT-buffer-07529
  The `buffer` used to create `pInfo->src` must be bound to device memory

- VUID-vkCmdCopyMicromapEXT-buffer-07530
  The `buffer` used to create `pInfo->dst` must be bound to device memory

Valid Usage (Implicit)

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

- VUID-vkCmdCopyMicromapEXT-pInfo-parameter
  `pInfo` must be a valid pointer to a valid VkCopyMicromapInfoEXT structure

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

- VUID-vkCmdCopyMicromapEXT-commandBuffer-cmdpool
  The `VkCommandPool` that `commandBuffer` was allocated from must support compute operations

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

- VUID-vkCmdCopyMicromapEXT-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 | Compute | Action

## See Also

VK_EXT_opacity_micromap, VkCommandBuffer, VkCopyMicromapInfoEXT

## 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