# WorldRayDirectionKHR(3) Manual Page

## Name

WorldRayDirectionKHR - Ray direction in world space

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## Description

`WorldRayDirectionKHR`

  A variable decorated with the `WorldRayDirectionKHR` decoration will specify the direction of the ray being processed, in world space. The value is the parameter passed into the pipeline trace ray instruction.

Valid Usage

- VUID-WorldRayDirectionKHR-WorldRayDirectionKHR-04428
  The `WorldRayDirectionKHR` decoration must be used only within the `IntersectionKHR`, `AnyHitKHR`, `ClosestHitKHR`, or `MissKHR` `Execution` `Model`

- VUID-WorldRayDirectionKHR-WorldRayDirectionKHR-04429
  The variable decorated with `WorldRayDirectionKHR` must be declared using the `Input` `Storage` `Class`

- VUID-WorldRayDirectionKHR-WorldRayDirectionKHR-04430
  The variable decorated with `WorldRayDirectionKHR` must be declared as a three-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 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0