VK_EXT_ray_tracing_invocation_reorder

Other Extension Metadata

Last Modified Date

2025-11-12

Interactions and External Dependencies

• This extension provides API support for GL_EXT_shader_invocation_reorder

Contributors

• Eric Werness, NVIDIA
• Ashwin Lele, NVIDIA
• Daniel Koch, NVIDIA
• Vikram Kushwaha, NVIDIA
• Piers Daniell, NVIDIA
• Stu Smith, AMD
• Aaron Hagan, AMD
• Tyler Nowicki, AMD
• Sebastian Neubauer, AMD
• Radoslaw Drabinski, Intel
• Sven Woop, Intel
• Aleksandra Krstic, QUALCOMM
• Andrew Garrard, Imagination Technologies
• Mathieu Robart, Arm Limited
• Tom Olson, Khronos
• Ralph Potter, Samsung Electronics
• Antonio Caggiano, LunarG

Description

The ray tracing pipeline API provides some ability to reorder for locality, but it is useful to have more control over how the reordering happens and what information is included in the reordering. The shader API provides a hit object to contain result information from the hit which can be used as part of the explicit sorting plus options that contain an integer for hint bits to use to add more coherency.

New Structures

• Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:
  • VkPhysicalDeviceRayTracingInvocationReorderFeaturesEXT
• Extending VkPhysicalDeviceProperties2:
  • VkPhysicalDeviceRayTracingInvocationReorderPropertiesEXT

New Enums

• VkRayTracingInvocationReorderModeEXT

New Enum Constants

• VK_EXT_RAY_TRACING_INVOCATION_REORDER_EXTENSION_NAME
• VK_EXT_RAY_TRACING_INVOCATION_REORDER_SPEC_VERSION
• Extending VkStructureType:
  • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_INVOCATION_REORDER_FEATURES_EXT
  • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_INVOCATION_REORDER_PROPERTIES_EXT

Version History

• Revision 1, 2025-11-12 (Eric Werness)
  • Internal development - forked from NV