Description

FrontFacing

Decorating a variable with the FrontFacing built-in decoration will make that variable contain whether the fragment is front or back facing. This variable is non-zero if the current fragment is considered to be part of a front-facing polygon primitive or of a non-polygon primitive and is zero if the fragment is considered to be part of a back-facing polygon primitive.

Valid Usage
  • VUID-FrontFacing-FrontFacing-04229
    The FrontFacing decoration must be used only within the Fragment Execution Model

  • VUID-FrontFacing-FrontFacing-04230
    The variable decorated with FrontFacing must be declared using the Input Storage Class

  • VUID-FrontFacing-FrontFacing-04231
    The variable decorated with FrontFacing must be declared as a boolean value

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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0