# BaryCoordKHR(3) Manual Page

## Name

BaryCoordKHR - Barycentric coordinates of a fragment

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## Description

`BaryCoordKHR`

  The `BaryCoordKHR` decoration can be used to decorate a fragment shader input variable. This variable will contain a three-component floating-point vector with barycentric weights that indicate the location of the fragment relative to the screen-space locations of vertices of its primitive, obtained using perspective interpolation.

Valid Usage

- VUID-BaryCoordKHR-BaryCoordKHR-04154
  The `BaryCoordKHR` decoration must be used only within the `Fragment` `Execution` `Model`

- VUID-BaryCoordKHR-BaryCoordKHR-04155
  The variable decorated with `BaryCoordKHR` must be declared using the `Input` `Storage` `Class`

- VUID-BaryCoordKHR-BaryCoordKHR-04156
  The variable decorated with `BaryCoordKHR` must be declared as a three-component vector of 32-bit floating-point 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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0