KHRShaderClock (LWJGL 3.3.1 - Vulkan)

java.lang.Object
- org.lwjgl.vulkan.KHRShaderClock

```
public final class KHRShaderClock
extends java.lang.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.

VK_KHR_shader_clock
Name String

VK_KHR_shader_clock

Extension Type

Device extension

Registered Extension Number

182

Revision

1

Extension and Version Dependencies
- Requires Vulkan 1.0
- Requires VK_KHR_get_physical_device_properties2
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 requires SPV_KHR_shader_clock.
- This extension provides API support for ARB_shader_clock and EXT_shader_realtime_clock
Contributors
- Aaron Hagan, AMD
- Daniel Koch, NVIDIA

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`VK_KHR_SHADER_CLOCK_EXTENSION_NAME`	The extension name.
`static int`	`VK_KHR_SHADER_CLOCK_SPEC_VERSION`	The extension specification version.
`static 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 Detail
  - 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 java.lang.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