# TileApronSizeQCOM(3) Manual Page

## Name

TileApronSizeQCOM - Tile apron size of a shader invocation

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## Description

`TileApronSizeQCOM`

  The `TileApronSizeQCOM` decoration can be applied to a shader input which will be filled with the width and height of the active tile’s apron.

  If per-tile execution model is enabled for the current shader invocation, and is executing in a dynamic render pass or is executing in a subpass where `VK_SUBPASS_DESCRIPTION_TILE_SHADING_APRON_BIT_QCOM` is included in its `flags`, x and y components of `TileApronSizeQCOM` reflect the with and height of the tile apron corresponding to the shader invocation.

  Otherwise, the x and y components of `TileApronSizeQCOM` are filled with (0,0).

Valid Usage

- VUID-TileApronSizeQCOM-TileApronSizeQCOM-10632
  The `TileApronSizeQCOM` decoration must be used only within the `Fragment` `Execution` `Model` or `GLCompute` `Execution` `Model`

- VUID-TileApronSizeQCOM-TileApronSizeQCOM-10633
  The variable decorated with `TileApronSizeQCOM` must be declared using the `Input` `Storage` `Class`

- VUID-TileApronSizeQCOM-TileApronSizeQCOM-10634
  The variable decorated with `TileApronSizeQCOM` must be declared as a two-component vector of 32-bit integer values

## See Also

No cross-references are available

## 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