Registered Extension Number

216

Revision

1

Extension and Version Dependencies

  • Requires Vulkan 1.0

  • Requires VK_KHR_get_physical_device_properties2

    Last Modified Date

    2020-08-11

    IP Status

    No known IP claims.

    Interactions and External Dependencies
    Contributors
    • Alan Baker, Google

    • Jeff Bolz, NVIDIA

    • Jesse Hall, Google

    • Ralph Potter, Samsung

    • Tom Olson, Arm

Description

This extension adds Vulkan support for the SPV_KHR_terminate_invocation SPIR-V extension. That SPIR-V extension provides a new instruction, OpTerminateInvocation, which causes a shader invocation to immediately terminate and sets the coverage of shaded samples to 0; only previously executed instructions will have observable effects. The OpTerminateInvocation instruction, along with the OpDemoteToHelperInvocation instruction from the VK_EXT_shader_demote_to_helper_invocation extension, together replace the OpKill instruction, which could behave like either of these instructions. OpTerminateInvocation provides the behavior required by the GLSL discard statement, and should be used when available by GLSL compilers and applications that need the GLSL discard behavior.

New Enum Constants

  • VK_KHR_SHADER_TERMINATE_INVOCATION_EXTENSION_NAME

  • VK_KHR_SHADER_TERMINATE_INVOCATION_SPEC_VERSION

  • Extending VkStructureType:

    • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_TERMINATE_INVOCATION_FEATURES_KHR

Version History

  • Revision 1, 2020-08-11 (Jesse Hall)

See Also

Document Notes

For more information, see the Vulkan Specification

This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.

Copyright (c) 2014-2020 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0