Vulkan.Extensions.VK_EXT_image_view_min_lod

Name

VK_EXT_image_view_min_lod - device extension

VK_EXT_image_view_min_lod

Name String

VK_EXT_image_view_min_lod

Extension Type

Device extension

Registered Extension Number

392

Revision

1

Extension and Version Dependencies

• Requires support for Vulkan 1.0
• Requires VK_KHR_get_physical_device_properties2 to be enabled for any device-level functionality

Contact

• Joshua Ashton @Joshua-Ashton%0A*Here describe the issue or question you have about the VK_EXT_image_view_min_lod extension*

Other Extension Metadata

Last Modified Date

2021-11-09

IP Status

No known IP claims.

Contributors

• Joshua Ashton, Valve
• Hans-Kristian Arntzen, Valve
• Samuel Iglesias Gonsalvez, Igalia
• Tobias Hector, AMD
• Jason Ekstrand, Intel
• Tom Olson, ARM

Description

This extension allows applications to clamp the minimum LOD value during Image Level(s) Selection, Texel Gathering and Integer Texel Coordinate Operations with a given ImageView by ImageViewMinLodCreateInfoEXT::minLod.

This extension may be useful to restrict a ImageView to only mips which have been uploaded, and the use of fractional minLod can be useful for smoothly introducing new mip levels when using linear mipmap filtering.

New Structures

• Extending ImageViewCreateInfo:

  • ImageViewMinLodCreateInfoEXT

• Extending PhysicalDeviceFeatures2, DeviceCreateInfo:

  • PhysicalDeviceImageViewMinLodFeaturesEXT

New Enum Constants

• EXT_IMAGE_VIEW_MIN_LOD_EXTENSION_NAME

• EXT_IMAGE_VIEW_MIN_LOD_SPEC_VERSION

• Extending StructureType:

  • STRUCTURE_TYPE_IMAGE_VIEW_MIN_LOD_CREATE_INFO_EXT
  • STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_VIEW_MIN_LOD_FEATURES_EXT

Version History

• Revision 1, 2021-07-06 (Joshua Ashton)

  • Initial version

See Also

ImageViewMinLodCreateInfoEXT, PhysicalDeviceImageViewMinLodFeaturesEXT

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.

Documentation

data PhysicalDeviceImageViewMinLodFeaturesEXT

VkPhysicalDeviceImageViewMinLodFeaturesEXT - Structure describing whether clamping the min lod of a image view is supported by the implementation

Members

This structure describes the following feature:

Description

If the PhysicalDeviceImageViewMinLodFeaturesEXT structure is included in the pNext chain of the PhysicalDeviceFeatures2 structure passed to getPhysicalDeviceFeatures2, it is filled in to indicate whether each corresponding feature is supported. PhysicalDeviceImageViewMinLodFeaturesEXT can also be used in the pNext chain of DeviceCreateInfo to selectively enable these features.

Valid Usage (Implicit)

See Also

VK_EXT_image_view_min_lod, Bool32, StructureType

Constructors

PhysicalDeviceImageViewMinLodFeaturesEXT

Fields

• minLod :: Bool

  minLod indicates whether the implementation supports clamping the minimum LOD value during Image Level(s) Selection, Texel Gathering and Integer Texel Coordinate Operations with a given ImageView by ImageViewMinLodCreateInfoEXT::minLod.

Instances

Storable PhysicalDeviceImageViewMinLodFeaturesEXT

Defined in Vulkan.Extensions.VK_EXT_image_view_min_lod

Methods

sizeOf :: PhysicalDeviceImageViewMinLodFeaturesEXT -> Int

alignment :: PhysicalDeviceImageViewMinLodFeaturesEXT -> Int

peekElemOff :: Ptr PhysicalDeviceImageViewMinLodFeaturesEXT -> Int -> IO PhysicalDeviceImageViewMinLodFeaturesEXT

pokeElemOff :: Ptr PhysicalDeviceImageViewMinLodFeaturesEXT -> Int -> PhysicalDeviceImageViewMinLodFeaturesEXT -> IO ()

peekByteOff :: Ptr b -> Int -> IO PhysicalDeviceImageViewMinLodFeaturesEXT

pokeByteOff :: Ptr b -> Int -> PhysicalDeviceImageViewMinLodFeaturesEXT -> IO ()

peek :: Ptr PhysicalDeviceImageViewMinLodFeaturesEXT -> IO PhysicalDeviceImageViewMinLodFeaturesEXT

poke :: Ptr PhysicalDeviceImageViewMinLodFeaturesEXT -> PhysicalDeviceImageViewMinLodFeaturesEXT -> IO ()

Show PhysicalDeviceImageViewMinLodFeaturesEXT

Defined in Vulkan.Extensions.VK_EXT_image_view_min_lod

Methods

showsPrec :: Int -> PhysicalDeviceImageViewMinLodFeaturesEXT -> ShowS

show :: PhysicalDeviceImageViewMinLodFeaturesEXT -> String

showList :: [PhysicalDeviceImageViewMinLodFeaturesEXT] -> ShowS

Eq PhysicalDeviceImageViewMinLodFeaturesEXT

Defined in Vulkan.Extensions.VK_EXT_image_view_min_lod

Methods

(==) :: PhysicalDeviceImageViewMinLodFeaturesEXT -> PhysicalDeviceImageViewMinLodFeaturesEXT -> Bool

(/=) :: PhysicalDeviceImageViewMinLodFeaturesEXT -> PhysicalDeviceImageViewMinLodFeaturesEXT -> Bool

FromCStruct PhysicalDeviceImageViewMinLodFeaturesEXT

Defined in Vulkan.Extensions.VK_EXT_image_view_min_lod

Methods

peekCStruct :: Ptr PhysicalDeviceImageViewMinLodFeaturesEXT -> IO PhysicalDeviceImageViewMinLodFeaturesEXT

ToCStruct PhysicalDeviceImageViewMinLodFeaturesEXT

Defined in Vulkan.Extensions.VK_EXT_image_view_min_lod

Methods

withCStruct :: PhysicalDeviceImageViewMinLodFeaturesEXT -> (Ptr PhysicalDeviceImageViewMinLodFeaturesEXT -> IO b) -> IO b

pokeCStruct :: Ptr PhysicalDeviceImageViewMinLodFeaturesEXT -> PhysicalDeviceImageViewMinLodFeaturesEXT -> IO b -> IO b

withZeroCStruct :: (Ptr PhysicalDeviceImageViewMinLodFeaturesEXT -> IO b) -> IO b

pokeZeroCStruct :: Ptr PhysicalDeviceImageViewMinLodFeaturesEXT -> IO b -> IO b

cStructSize :: Int

cStructAlignment :: Int

Zero PhysicalDeviceImageViewMinLodFeaturesEXT

Defined in Vulkan.Extensions.VK_EXT_image_view_min_lod

Methods

zero :: PhysicalDeviceImageViewMinLodFeaturesEXT

data ImageViewMinLodCreateInfoEXT

VkImageViewMinLodCreateInfoEXT - Structure describing the minimum lod of an image view

Description

If the pNext chain includes a ImageViewMinLodCreateInfoEXT structure, then that structure includes a parameter specifying a value to clamp the minimum LOD value during Image Level(s) Selection, Texel Gathering and Integer Texel Coordinate Operations.

If the image view contains ImageViewMinLodCreateInfoEXT and it is used as part of a sampling operation:

minLodFloatimageView = minLod

otherwise:

minLodFloatimageView = 0.0

An integer variant of this parameter is also defined for sampling operations which access integer mipmap levels:

minLodIntegerimageView = ⌊minLodFloatimageView⌋

Valid Usage

• If the minLod feature is not enabled, minLod must be 0.0.

• minLod must be less or equal to the index of the last mipmap level accessible to the view.

Valid Usage (Implicit)

• sType must be STRUCTURE_TYPE_IMAGE_VIEW_MIN_LOD_CREATE_INFO_EXT

See Also

VK_EXT_image_view_min_lod, StructureType

Constructors

ImageViewMinLodCreateInfoEXT

Fields

• minLod :: Float

  minLod is the value to clamp the minimum LOD accessible by this ImageView.

Instances

Storable ImageViewMinLodCreateInfoEXT

Defined in Vulkan.Extensions.VK_EXT_image_view_min_lod

Methods

sizeOf :: ImageViewMinLodCreateInfoEXT -> Int

alignment :: ImageViewMinLodCreateInfoEXT -> Int

peekElemOff :: Ptr ImageViewMinLodCreateInfoEXT -> Int -> IO ImageViewMinLodCreateInfoEXT

pokeElemOff :: Ptr ImageViewMinLodCreateInfoEXT -> Int -> ImageViewMinLodCreateInfoEXT -> IO ()

peekByteOff :: Ptr b -> Int -> IO ImageViewMinLodCreateInfoEXT

pokeByteOff :: Ptr b -> Int -> ImageViewMinLodCreateInfoEXT -> IO ()

peek :: Ptr ImageViewMinLodCreateInfoEXT -> IO ImageViewMinLodCreateInfoEXT

poke :: Ptr ImageViewMinLodCreateInfoEXT -> ImageViewMinLodCreateInfoEXT -> IO ()

Show ImageViewMinLodCreateInfoEXT

Defined in Vulkan.Extensions.VK_EXT_image_view_min_lod

Methods

showsPrec :: Int -> ImageViewMinLodCreateInfoEXT -> ShowS

show :: ImageViewMinLodCreateInfoEXT -> String

showList :: [ImageViewMinLodCreateInfoEXT] -> ShowS

Eq ImageViewMinLodCreateInfoEXT

Defined in Vulkan.Extensions.VK_EXT_image_view_min_lod

Methods

(==) :: ImageViewMinLodCreateInfoEXT -> ImageViewMinLodCreateInfoEXT -> Bool

(/=) :: ImageViewMinLodCreateInfoEXT -> ImageViewMinLodCreateInfoEXT -> Bool

FromCStruct ImageViewMinLodCreateInfoEXT

Defined in Vulkan.Extensions.VK_EXT_image_view_min_lod

Methods

peekCStruct :: Ptr ImageViewMinLodCreateInfoEXT -> IO ImageViewMinLodCreateInfoEXT

ToCStruct ImageViewMinLodCreateInfoEXT

Defined in Vulkan.Extensions.VK_EXT_image_view_min_lod

Methods

withCStruct :: ImageViewMinLodCreateInfoEXT -> (Ptr ImageViewMinLodCreateInfoEXT -> IO b) -> IO b

pokeCStruct :: Ptr ImageViewMinLodCreateInfoEXT -> ImageViewMinLodCreateInfoEXT -> IO b -> IO b

withZeroCStruct :: (Ptr ImageViewMinLodCreateInfoEXT -> IO b) -> IO b

pokeZeroCStruct :: Ptr ImageViewMinLodCreateInfoEXT -> IO b -> IO b

cStructSize :: Int

cStructAlignment :: Int

Zero ImageViewMinLodCreateInfoEXT

Defined in Vulkan.Extensions.VK_EXT_image_view_min_lod

Methods

zero :: ImageViewMinLodCreateInfoEXT

type EXT_IMAGE_VIEW_MIN_LOD_SPEC_VERSION = 1

pattern EXT_IMAGE_VIEW_MIN_LOD_SPEC_VERSION :: forall a. Integral a => a

type EXT_IMAGE_VIEW_MIN_LOD_EXTENSION_NAME = "VK_EXT_image_view_min_lod"

pattern EXT_IMAGE_VIEW_MIN_LOD_EXTENSION_NAME :: forall a. (Eq a, IsString a) => a