Description

LaunchIdKHR

A variable decorated with the LaunchIdKHR decoration will specify the index of the work item being processed. One work item is generated for each of the width × height × depth items dispatched by a vkCmdTraceRaysKHR command. All shader invocations inherit the same value for variables decorated with LaunchIdKHR.

Valid Usage

  • VUID-LaunchIdKHR-LaunchIdKHR-04266
    The LaunchIdKHR decoration must be used only within the RayGenerationKHR, IntersectionKHR, AnyHitKHR, ClosestHitKHR, MissKHR, or CallableKHR Execution Model

  • VUID-LaunchIdKHR-LaunchIdKHR-04267
    The variable decorated with LaunchIdKHR must be declared using the Input Storage Class

  • VUID-LaunchIdKHR-LaunchIdKHR-04268
    The variable decorated with LaunchIdKHR must be declared as a three-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 2014-2023 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0