# vkGetDeviceSubpassShadingMaxWorkgroupSizeHUAWEI(3) Manual Page

## Name

vkGetDeviceSubpassShadingMaxWorkgroupSizeHUAWEI - Query maximum supported subpass shading workgroup size for a give render pass

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## C Specification

A subpass shading pipeline’s workgroup size is a 2D vector with number of power-of-two in width and height. The maximum number of width and height is implementation-dependent, and may vary for different formats and sample counts of attachments in a render pass.

To query the maximum workgroup size, call:

    // Provided by VK_HUAWEI_subpass_shading
    VkResult vkGetDeviceSubpassShadingMaxWorkgroupSizeHUAWEI(
        VkDevice                                    device,
        VkRenderPass                                renderpass,
        VkExtent2D*                                 pMaxWorkgroupSize);

## Parameters

- `device` is a handle to a local device object that was used to create the given render pass.

- `renderpass` is a handle to a render pass object describing the environment in which the pipeline will be used. The pipeline must only be used with a render pass instance compatible with the one provided. See Render Pass Compatibility for more information.

- `pMaxWorkgroupSize` is a pointer to a VkExtent2D structure.

## Description

Valid Usage (Implicit)

- VUID-vkGetDeviceSubpassShadingMaxWorkgroupSizeHUAWEI-device-parameter
  `device` must be a valid VkDevice handle

- VUID-vkGetDeviceSubpassShadingMaxWorkgroupSizeHUAWEI-renderpass-parameter
  `renderpass` must be a valid VkRenderPass handle

- VUID-vkGetDeviceSubpassShadingMaxWorkgroupSizeHUAWEI-pMaxWorkgroupSize-parameter
  `pMaxWorkgroupSize` must be a valid pointer to VkExtent2D structures

- VUID-vkGetDeviceSubpassShadingMaxWorkgroupSizeHUAWEI-renderpass-parent
  `renderpass` must have been created, allocated, or retrieved from `device`

Return Codes

On success, this command returns

  - `VK_SUCCESS`

On failure, this command returns

  - `VK_ERROR_OUT_OF_HOST_MEMORY`

  - `VK_ERROR_OUT_OF_DEVICE_MEMORY`

  - `VK_ERROR_SURFACE_LOST_KHR`

## See Also

VK_HUAWEI_subpass_shading, VkDevice, VkExtent2D, VkRenderPass

## 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