Description

InstanceId

Decorating a variable in an intersection, any-hit, or closest hit shader with the InstanceId decoration will make that variable contain the index of the instance that intersects the current ray.

Valid Usage

  • VUID-InstanceId-InstanceId-04254
    The InstanceId decoration must be used only within the IntersectionKHR, AnyHitKHR, or ClosestHitKHR Execution Model

  • VUID-InstanceId-InstanceId-04255
    The variable decorated with InstanceId must be declared using the Input Storage Class

  • VUID-InstanceId-InstanceId-04256
    The variable decorated with InstanceId must be declared as a scalar 32-bit integer 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

Copyright 2014-2023 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0