EXTShaderDemoteToHelperInvocation (LWJGL 3.2.3 - Vulkan)

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

```
public final class EXTShaderDemoteToHelperInvocation
extends java.lang.Object
```
This extension adds Vulkan support for the SPV_EXT_demote_to_helper_invocation SPIR-V extension. That SPIR-V extension provides a new instruction OpDemoteToHelperInvocationEXT allowing shaders to "demote" a fragment shader invocation to behave like a helper invocation for its duration. The demoted invocation will have no further side effects and will not output to the framebuffer, but remains active and can participate in computing derivatives and in subgroup operations. This is a better match for the "discard" instruction in HLSL.
Examples

None.
Name String

VK_EXT_shader_demote_to_helper_invocation

Extension Type

Device extension

Registered Extension Number

277

Revision

1

Extension and Version Dependencies
- Requires Vulkan 1.0
- Requires VK_KHR_get_physical_device_properties2
Contact
- Jeff Bolz jeffbolznv
Last Modified Date

2019-06-01

IP Status

No known IP claims.

Contributors
- Jeff Bolz, NVIDIA

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`VK_EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_EXTENSION_NAME`	The extension name.
`static int`	`VK_EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_SPEC_VERSION`	The extension specification version.
`static int`	`VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_DEMOTE_TO_HELPER_INVOCATION_FEATURES_EXT`	Extends `VkStructureType`.

Method Summary
- Methods inherited from class java.lang.Object
  equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - VK_EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_SPEC_VERSION
```
public static final int VK_EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_SPEC_VERSION
```
    The extension specification version.
    
    See Also:
    
    Constant Field Values
  - VK_EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_EXTENSION_NAME
```
public static final java.lang.String VK_EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_EXTENSION_NAME
```
    The extension name.
    
    See Also:
    
    Constant Field Values
  - VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_DEMOTE_TO_HELPER_INVOCATION_FEATURES_EXT
```
public static final int VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_DEMOTE_TO_HELPER_INVOCATION_FEATURES_EXT
```
    Extends VkStructureType.
    
    See Also:
    
    Constant Field Values