VK_KHR_shader_subgroup_uniform_control_flow(3)

Name

VK_KHR_shader_subgroup_uniform_control_flow - device extension

VK_KHR_shader_subgroup_uniform_control_flow

Name String

VK_KHR_shader_subgroup_uniform_control_flow

Extension Type

Device extension

Registered Extension Number

324

Revision

1

Ratification Status

Ratified

Extension and Version Dependencies
SPIR-V Dependencies
Contact

Other Extension Metadata

Last Modified Date

2020-08-27

IP Status

No known IP claims.

Interactions and External Dependencies
Contributors
  • Alan Baker, Google

  • Jeff Bolz, NVIDIA

Description

This extension allows the use of the SPV_KHR_subgroup_uniform_control_flow SPIR-V extension in shader modules. SPV_KHR_subgroup_uniform_control_flow provides stronger guarantees that diverged subgroups will reconverge.

Developers should utilize this extension if they use subgroup operations to reduce the work performed by a uniform subgroup. This extension will guarantee that uniform subgroup will reconverge in the same manner as invocation groups (see “Uniform Control Flow” in the Khronos SPIR-V Specification).

New Enum Constants

  • VK_KHR_SHADER_SUBGROUP_UNIFORM_CONTROL_FLOW_EXTENSION_NAME

  • VK_KHR_SHADER_SUBGROUP_UNIFORM_CONTROL_FLOW_SPEC_VERSION

  • Extending VkStructureType:

    • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_SUBGROUP_UNIFORM_CONTROL_FLOW_FEATURES_KHR

Version History

  • Revision 1, 2020-08-27 (Alan Baker)

    • Internal draft version

See Also

No cross-references are available

Document Notes

For more information, see the Vulkan Specification.

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