Package org.lwjgl.vulkan

Class EXTShaderDemoteToHelperInvocation

java.lang.Object
org.lwjgl.vulkan.EXTShaderDemoteToHelperInvocation
public final class EXTShaderDemoteToHelperInvocation extends 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 group operations. This is a better match for the “discard” instruction in HLSL.
Promotion to Vulkan 1.3

Vulkan APIs in this extension are included in core Vulkan 1.3, with the EXT suffix omitted. External interactions defined by this extension, such as SPIR-V token names, retain their original names. The original Vulkan API names are still available as aliases of the core functionality.

Name String
VK_EXT_shader_demote_to_helper_invocation
Extension Type
Device extension
Registered Extension Number
277
Revision
1
Extension and Version Dependencies
VK_KHR_get_physical_device_properties2 or Version 1.1
SPIR-V Dependencies
Deprecation State
Contact
Other Extension Metadata
Last Modified Date
2019-06-01
IP Status
No known IP claims.
Interactions and External Dependencies
Contributors
  • Jeff Bolz, NVIDIA

  • Field Details

    • 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:

    • VK_EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_EXTENSION_NAME

      public static final String VK_EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_EXTENSION_NAME
      The extension name.
      See Also:

    • 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: