Contact
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Aaron Hagan ahagan
Other Extension Metadata
- Last Modified Date
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2019-4-25
- IP Status
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No known IP claims.
- Interactions and External Dependencies
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This extension requires
SPV_KHR_shader_clock. -
This extension provides API support for
ARB_shader_clockandEXT_shader_realtime_clock
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- Contributors
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Aaron Hagan, AMD
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Daniel Koch, NVIDIA
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Description
This extension advertises the SPIR-V ShaderClockKHR capability for
Vulkan, which allows a shader to query a real-time or monotonically
incrementing counter at the subgroup level or across the device level.
The two valid SPIR-V scopes for OpReadClockKHR are Subgroup and
Device.
When using GLSL source-based shading languages, the clockRealtime*EXT()
timing functions map to the OpReadClockKHR instruction with a scope of
Device, and the clock*ARB() timing functions map to the
OpReadClockKHR instruction with a scope of Subgroup.
New Enum Constants
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VK_KHR_SHADER_CLOCK_EXTENSION_NAME -
VK_KHR_SHADER_CLOCK_SPEC_VERSION -
Extending VkStructureType:
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VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_CLOCK_FEATURES_KHR
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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.