Package org.lwjgl.vulkan

Class KHRShaderClock

java.lang.Object

org.lwjgl.vulkan.KHRShaderClock

public final class KHRShaderClock
extends Object

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.

Name String

VK_KHR_shader_clock

Extension Type

Device extension

Registered Extension Number

182

Revision

1

Extension and Version Dependencies

VK_KHR_get_physical_device_properties2 or Version 1.1

SPIR-V Dependencies

• SPV_KHR_shader_clock

Contact

• Aaron Hagan ahagan

Other Extension Metadata

Last Modified Date

2019-4-25

IP Status

No known IP claims.

Interactions and External Dependencies

• This extension provides API support for GL_ARB_shader_clock and GL_EXT_shader_realtime_clock

Contributors

• Aaron Hagan, AMD
• Daniel Koch, NVIDIA

Field Summary

Fields

Modifier and Type	Field	Description
static final String	VK_KHR_SHADER_CLOCK_EXTENSION_NAME	The extension name.
static final int	VK_KHR_SHADER_CLOCK_SPEC_VERSION	The extension specification version.
static final int	VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_CLOCK_FEATURES_KHR	Extends VkStructureType.

Method Summary

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

VK_KHR_SHADER_CLOCK_SPEC_VERSION

public static final int VK_KHR_SHADER_CLOCK_SPEC_VERSION

The extension specification version.

See Also:

• Constant Field Values

VK_KHR_SHADER_CLOCK_EXTENSION_NAME

public static final String VK_KHR_SHADER_CLOCK_EXTENSION_NAME

The extension name.

See Also:

• Constant Field Values

VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_CLOCK_FEATURES_KHR

public static final int VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_CLOCK_FEATURES_KHR

Extends VkStructureType.

See Also:

• Constant Field Values