Safe Haskell	None
Language	Haskell2010

Vulkan.Extensions.VK_EXT_shader_demote_to_helper_invocation

Description

Name

VK_EXT_shader_demote_to_helper_invocation - device extension

VK_EXT_shader_demote_to_helper_invocation

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 https://github.com/KhronosGroup/Vulkan-Docs/issues/new?title=VK_EXT_shader_demote_to_helper_invocation:%20&body=@jeffbolznv%20

Other Extension Metadata

Last Modified Date: 2019-06-01

IP Status

No known IP claims.

Interactions and External Dependencies

This extension requires SPV_EXT_demote_to_helper_invocation

Contributors

Jeff Bolz, NVIDIA

Description

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.

New Structures

Extending PhysicalDeviceFeatures2, DeviceCreateInfo:
- PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT

New Enum Constants

EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_EXTENSION_NAME

New SPIR-V Capability

DemoteToHelperInvocationEXT

Version History

Revision 1, 2019-06-01 (Jeff Bolz)
- Initial draft

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.

Synopsis

data PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT = PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT {
- shaderDemoteToHelperInvocation :: Bool
}
type EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_SPEC_VERSION = 1
pattern EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_SPEC_VERSION :: forall a. Integral a => a
type EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_EXTENSION_NAME = "VK_EXT_shader_demote_to_helper_invocation"
pattern EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_EXTENSION_NAME :: forall a. (Eq a, IsString a) => a

Documentation

data PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT Source #

VkPhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT - Structure describing the shader demote to helper invocations features that can be supported by an implementation

Members

The members of the PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT structure describe the following features:

Description

If the PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT structure is included in the pNext chain of PhysicalDeviceFeatures2, it is filled with values indicating whether the feature is supported. PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT can also be included in the pNext chain of DeviceCreateInfo to enable the feature.

Valid Usage (Implicit)

Eq PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_shader_demote_to_helper_invocation Methods (==) :: PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> Bool # (/=) :: PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> Bool #
Show PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_shader_demote_to_helper_invocation Methods showsPrec :: Int -> PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> ShowS # show :: PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> String # showList :: [PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT] -> ShowS #
Storable PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_shader_demote_to_helper_invocation Methods sizeOf :: PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> Int # alignment :: PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> Int # peekElemOff :: Ptr PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> Int -> IO PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT # pokeElemOff :: Ptr PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> Int -> PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> IO () # peekByteOff :: Ptr b -> Int -> IO PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT # pokeByteOff :: Ptr b -> Int -> PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> IO () # peek :: Ptr PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> IO PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT # poke :: Ptr PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> IO () #
FromCStruct PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_shader_demote_to_helper_invocation Methods peekCStruct :: Ptr PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> IO PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT Source #
ToCStruct PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_shader_demote_to_helper_invocation Methods withCStruct :: PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> (Ptr PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> IO b) -> IO b Source # pokeCStruct :: Ptr PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> IO b -> IO b Source # withZeroCStruct :: (Ptr PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> IO b) -> IO b Source # pokeZeroCStruct :: Ptr PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT -> IO b -> IO b Source # cStructSize :: Int Source # cStructAlignment :: Int Source #
Zero PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT Source #
Instance details Defined in Vulkan.Extensions.VK_EXT_shader_demote_to_helper_invocation Methods zero :: PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT Source #

type EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_SPEC_VERSION = 1 Source #

pattern EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_SPEC_VERSION :: forall a. Integral a => a Source #

type EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_EXTENSION_NAME = "VK_EXT_shader_demote_to_helper_invocation" Source #

pattern EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION_EXTENSION_NAME :: forall a. (Eq a, IsString a) => a Source #

Name

VK_EXT_shader_demote_to_helper_invocation

Other Extension Metadata

Description

New Structures

New Enum Constants

New SPIR-V Capability

Version History

See Also

Document Notes

Documentation

Members

Description

Valid Usage (Implicit)

See Also

Instances

PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT
Fields shaderDemoteToHelperInvocation :: Bool `shaderDemoteToHelperInvocation` indicates whether the implementation supports the SPIR-V `DemoteToHelperInvocationEXT` capability.