# BaryCoordSmoothCentroidAMD(3) Manual Page

## Name

BaryCoordSmoothCentroidAMD - Barycentric coordinates of a fragment centroid

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## Description

`BaryCoordSmoothCentroidAMD`

  The `BaryCoordSmoothCentroidAMD` decoration can be used to decorate a fragment shader input variable. This variable will contain the (I,J) pair of the barycentric coordinates corresponding to the fragment evaluated using perspective interpolation at the centroid. The K coordinate of the barycentric coordinates can be derived given the identity I + J + K = 1.0.

Valid Usage

- VUID-BaryCoordSmoothCentroidAMD-BaryCoordSmoothCentroidAMD-04175
  The `BaryCoordSmoothCentroidAMD` decoration must be used only within the `Fragment` `Execution` `Model`

- VUID-BaryCoordSmoothCentroidAMD-BaryCoordSmoothCentroidAMD-04176
  The variable decorated with `BaryCoordSmoothCentroidAMD` must be declared using the `Input` `Storage` `Class`

- VUID-BaryCoordSmoothCentroidAMD-BaryCoordSmoothCentroidAMD-04177
  The variable decorated with `BaryCoordSmoothCentroidAMD` must be declared as a two-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