FrontFacing(3)

Name

FrontFacing - Front face determination of a fragment

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 (NOTE: cannot determine Specification page containing this refpage).

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.