Vulkan.Extensions.VK_QCOM_render_pass_transform

Name

VK_QCOM_render_pass_transform - device extension

VK_QCOM_render_pass_transform

Name String

VK_QCOM_render_pass_transform

Extension Type

Device extension

Registered Extension Number

283

Revision

2

Extension and Version Dependencies

• Requires Vulkan 1.0
• Requires VK_KHR_swapchain
• Requires VK_KHR_surface

Contact

• Jeff Leger @jackohound%0A<<Here describe the issue or question you have about the VK_QCOM_render_pass_transform extension> >

Other Extension Metadata

Last Modified Date

2021-03-09

Interactions and External Dependencies

• This extension requires VK_KHR_swapchain
• This extension interacts with VK_EXT_fragment_density_map
• This extension interacts with VK_KHR_fragment_shading_rate

Contributors

• Jeff Leger, Qualcomm Technologies, Inc.
• Brandon Light, Qualcomm Technologies, Inc.
• Matthew Netsch, Qualcomm Technologies, Inc.

Description

This extension provides a mechanism for applications to enable driver support for render pass transform.

Mobile devices can be rotated and mobile applications need to render properly when a device is held in a landscape or portrait orientation. When the current orientation differs from the device’s native orientation, a rotation is required so that the “up” direction of the rendered scene matches the current orientation.

If the Display Processing Unit (DPU) doesnt natively support rotation, the Vulkan presentation engine can handle this rotation in a separate composition pass. Alternatively, the application can render frames “pre-rotated” to avoid this extra pass. The latter is preferred to reduce power consumption and achieve the best performance because it avoids tasking the GPU with extra work to perform the copy/rotate operation.

Unlike OpenGL ES, the burden of pre-rotation in Vulkan falls on the application. To implement pre-rotation, applications render into swapchain images matching the device native aspect ratio of the display and “pre-rotate” the rendering content to match the device’s current orientation. The burden is more than adjusting the Model View Projection (MVP) matrix in the vertex shader to account for rotation and aspect ratio. The coordinate systems of scissors, viewports, derivatives and several shader built-ins may need to be adapted to produce the correct result.

It is difficult for some game engines to manage this burden; many chose to simply accept the performance/power overhead of performing rotation in the presentation engine.

This extension allows applications to achieve the performance benefits of pre-rotated rendering by moving much of the above-mentioned burden to the graphics driver. The following is unchanged with this extension:

• Applications create a swapchain matching the native orientation of the display. Applications must also set the SwapchainCreateInfoKHR::preTransform equal to the currentTransform as returned by getPhysicalDeviceSurfaceCapabilitiesKHR.

The following is changed with this extension:

• At cmdBeginRenderPass, the application provides extension struct RenderPassTransformBeginInfoQCOM specifying the render pass transform parameters.
• At beginCommandBuffer for secondary command buffers, the application provides extension struct CommandBufferInheritanceRenderPassTransformInfoQCOM specifying the render pass transform parameters.
• The renderArea, viewports, scissors, and fragmentSize are all provided in the current (non-rotated) coordinate system. The implementation will transform those into the native (rotated) coordinate system.
• The implementation is responsible for transforming shader built-ins (FragCoord, PointCoord, SamplePosition, PrimitiveShadingRateKHR, interpolateAt(), dFdx, dFdy, fWidth) into the rotated coordinate system.
• The implementation is responsible for transforming position to the rotated coordinate system.

New Structures

• Extending CommandBufferInheritanceInfo:

  • CommandBufferInheritanceRenderPassTransformInfoQCOM

• Extending RenderPassBeginInfo:

  • RenderPassTransformBeginInfoQCOM

New Enum Constants

• QCOM_RENDER_PASS_TRANSFORM_EXTENSION_NAME

• QCOM_RENDER_PASS_TRANSFORM_SPEC_VERSION

• Extending RenderPassCreateFlagBits:

  • RENDER_PASS_CREATE_TRANSFORM_BIT_QCOM

• Extending StructureType:

  • STRUCTURE_TYPE_COMMAND_BUFFER_INHERITANCE_RENDER_PASS_TRANSFORM_INFO_QCOM
  • STRUCTURE_TYPE_RENDER_PASS_TRANSFORM_BEGIN_INFO_QCOM

Issues

1) Some early Adreno drivers (October 2019 through March 2020) advertised support for this extension but expected VK_STRUCTURE_TYPE values different from those in the vukan headers. To cover all Adreno devices on the market, applications need to detect the driver version and use the appropriate VK_STRUCTURE_TYPE values from the table below.

The driver version reported in VkPhysicalDeviceProperties.driverVersion is a uint32_t type. You can decode the uint32_t value into a major.minor.patch version as shown below:

uint32_t  major = ((driverVersion) >> 22);
uint32_t  minor = ((driverVersion) >> 12) & 0x3ff);
uint32_t  patch = ((driverVersion) & 0xfff);

If the Adreno major.minor.patch version is greater than or equal to to 512.469.0, then simply use the VK_STRUCTURE_TYPE values as defined in vulkan_core.h. If the version is less than or equal to to 512.468.0, then use the alternate values for the two VK_STRUCTURE_TYPEs in the table below.

	Adreno Driver Version
	512.468.0 and earlier	512.469.0 and later
VK_STRUCTURE_TYPE_ RENDER_PASS_TRANSFORM_BEGIN_INFO_QCOM	1000282000	1000282001
VK_STRUCTURE_TYPE_ COMMAND_BUFFER_INHERITANCE_RENDER_PASS_TRANSFORM_INFO_QCOM	1000282001	1000282000

Adreno Driver Requirements

2) Should the extension support only rotations (e.g. 90, 180, 270-degrees), or also mirror transforms (e.g. vertical flips)? Mobile use-cases only require rotation. Other display systems such as projectors might require a flipped transform.

RESOLVED: In this version of the extension, the functionality is restricted to 90, 180, and 270-degree rotations to address mobile use-cases.

3) How does this extension interact with VK_EXT_fragment_density_map?

RESOLVED Some implementations may not be able to support a render pass that enables both render pass transform and fragment density maps. For simplicity, this extension disallows enabling both features within a single render pass.

4) What should this extension be named?

We considered names such as “rotated_rendering”, “pre_rotation” and others. Since the functionality is limited to a render pass, it seemed the name should include “render_pass”. While the current extension is limited to rotations, it could be extended to other transforms (like mirror) in the future.

RESOLVED The name “render_pass_transform” seems like the most accurate description of the introduced functionality.

5) How does this extension interact with VK_KHR_fragment_shading_rate?

RESOLVED: For the same reasons as issue 3, this extension disallows enabling both pFragmentShadingRateAttachment and render pass transform within a single render pass.

However, pipeline shading rate and primitive shading rate are supported, and their respective fragmentSize and PrimitiveShadingRateKHR are provided in the current (non-rotated) coordinate system. The implementation is responsible for transforming them to the rotated coordinate system.

The set of supported shading rates may be different per transform. Supported rates queried from getPhysicalDeviceFragmentShadingRatesKHR are in the native (rotated) coordinate system. This means that the application must swap the x/y of the reported rates to get the set of rates supported for 90 and 270 degree rotation.

Version History

• Revision 1, 2020-02-05 (Jeff Leger)

• Revision 2, 2021-03-09 (Matthew Netsch)

  • Adds interactions with VK_KHR_fragment_shading_rate

See Also

CommandBufferInheritanceRenderPassTransformInfoQCOM, RenderPassTransformBeginInfoQCOM

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 RenderPassTransformBeginInfoQCOM

VkRenderPassTransformBeginInfoQCOM - Structure describing transform parameters of a render pass instance

Valid Usage

• transform must be SURFACE_TRANSFORM_IDENTITY_BIT_KHR, SURFACE_TRANSFORM_ROTATE_90_BIT_KHR, SURFACE_TRANSFORM_ROTATE_180_BIT_KHR, or SURFACE_TRANSFORM_ROTATE_270_BIT_KHR

• The renderpass must have been created with RenderPassCreateInfo::flags containing RENDER_PASS_CREATE_TRANSFORM_BIT_QCOM

Valid Usage (Implicit)

• sType must be STRUCTURE_TYPE_RENDER_PASS_TRANSFORM_BEGIN_INFO_QCOM

See Also

VK_QCOM_render_pass_transform, StructureType, SurfaceTransformFlagBitsKHR

Constructors

RenderPassTransformBeginInfoQCOM

Fields

• transform :: SurfaceTransformFlagBitsKHR

  transform is a SurfaceTransformFlagBitsKHR value describing the transform to be applied to rasterization.

Instances

Eq RenderPassTransformBeginInfoQCOM

Defined in Vulkan.Extensions.VK_QCOM_render_pass_transform

Methods

(==) :: RenderPassTransformBeginInfoQCOM -> RenderPassTransformBeginInfoQCOM -> Bool

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

Show RenderPassTransformBeginInfoQCOM

Defined in Vulkan.Extensions.VK_QCOM_render_pass_transform

Methods

showsPrec :: Int -> RenderPassTransformBeginInfoQCOM -> ShowS

show :: RenderPassTransformBeginInfoQCOM -> String

showList :: [RenderPassTransformBeginInfoQCOM] -> ShowS

Storable RenderPassTransformBeginInfoQCOM

Defined in Vulkan.Extensions.VK_QCOM_render_pass_transform

Methods

sizeOf :: RenderPassTransformBeginInfoQCOM -> Int

alignment :: RenderPassTransformBeginInfoQCOM -> Int

peekElemOff :: Ptr RenderPassTransformBeginInfoQCOM -> Int -> IO RenderPassTransformBeginInfoQCOM

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

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

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

peek :: Ptr RenderPassTransformBeginInfoQCOM -> IO RenderPassTransformBeginInfoQCOM

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

FromCStruct RenderPassTransformBeginInfoQCOM

Defined in Vulkan.Extensions.VK_QCOM_render_pass_transform

Methods

peekCStruct :: Ptr RenderPassTransformBeginInfoQCOM -> IO RenderPassTransformBeginInfoQCOM

ToCStruct RenderPassTransformBeginInfoQCOM

Defined in Vulkan.Extensions.VK_QCOM_render_pass_transform

Methods

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

pokeCStruct :: Ptr RenderPassTransformBeginInfoQCOM -> RenderPassTransformBeginInfoQCOM -> IO b -> IO b

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

pokeZeroCStruct :: Ptr RenderPassTransformBeginInfoQCOM -> IO b -> IO b

cStructSize :: Int

cStructAlignment :: Int

Zero RenderPassTransformBeginInfoQCOM

Defined in Vulkan.Extensions.VK_QCOM_render_pass_transform

Methods

zero :: RenderPassTransformBeginInfoQCOM

data CommandBufferInheritanceRenderPassTransformInfoQCOM

VkCommandBufferInheritanceRenderPassTransformInfoQCOM - Structure describing transformed render pass parameters command buffer

Description

When the secondary is recorded to execute within a render pass instance using cmdExecuteCommands, the render pass transform parameters of the secondary command buffer must be consistent with the render pass transform parameters specified for the render pass instance. In particular, the transform and renderArea for command buffer must be identical to the transform and renderArea of the render pass instance.

Valid Usage (Implicit)

See Also

VK_QCOM_render_pass_transform, Rect2D, StructureType, SurfaceTransformFlagBitsKHR

Constructors

CommandBufferInheritanceRenderPassTransformInfoQCOM

Fields

• transform :: SurfaceTransformFlagBitsKHR

  transform is a SurfaceTransformFlagBitsKHR value describing the transform to be applied to the render pass.

  transform must be SURFACE_TRANSFORM_IDENTITY_BIT_KHR, SURFACE_TRANSFORM_ROTATE_90_BIT_KHR, SURFACE_TRANSFORM_ROTATE_180_BIT_KHR, or SURFACE_TRANSFORM_ROTATE_270_BIT_KHR

• renderArea :: Rect2D

  renderArea is the render area that is affected by the command buffer.

Instances

Show CommandBufferInheritanceRenderPassTransformInfoQCOM

Defined in Vulkan.Extensions.VK_QCOM_render_pass_transform

Methods

showsPrec :: Int -> CommandBufferInheritanceRenderPassTransformInfoQCOM -> ShowS

show :: CommandBufferInheritanceRenderPassTransformInfoQCOM -> String

showList :: [CommandBufferInheritanceRenderPassTransformInfoQCOM] -> ShowS

Storable CommandBufferInheritanceRenderPassTransformInfoQCOM

Defined in Vulkan.Extensions.VK_QCOM_render_pass_transform

Methods

sizeOf :: CommandBufferInheritanceRenderPassTransformInfoQCOM -> Int

alignment :: CommandBufferInheritanceRenderPassTransformInfoQCOM -> Int

peekElemOff :: Ptr CommandBufferInheritanceRenderPassTransformInfoQCOM -> Int -> IO CommandBufferInheritanceRenderPassTransformInfoQCOM

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

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

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

peek :: Ptr CommandBufferInheritanceRenderPassTransformInfoQCOM -> IO CommandBufferInheritanceRenderPassTransformInfoQCOM

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

FromCStruct CommandBufferInheritanceRenderPassTransformInfoQCOM

Defined in Vulkan.Extensions.VK_QCOM_render_pass_transform

Methods

peekCStruct :: Ptr CommandBufferInheritanceRenderPassTransformInfoQCOM -> IO CommandBufferInheritanceRenderPassTransformInfoQCOM

ToCStruct CommandBufferInheritanceRenderPassTransformInfoQCOM

Defined in Vulkan.Extensions.VK_QCOM_render_pass_transform

Methods

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

pokeCStruct :: Ptr CommandBufferInheritanceRenderPassTransformInfoQCOM -> CommandBufferInheritanceRenderPassTransformInfoQCOM -> IO b -> IO b

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

pokeZeroCStruct :: Ptr CommandBufferInheritanceRenderPassTransformInfoQCOM -> IO b -> IO b

cStructSize :: Int

cStructAlignment :: Int

Zero CommandBufferInheritanceRenderPassTransformInfoQCOM

Defined in Vulkan.Extensions.VK_QCOM_render_pass_transform

Methods

zero :: CommandBufferInheritanceRenderPassTransformInfoQCOM

type QCOM_RENDER_PASS_TRANSFORM_SPEC_VERSION = 2

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

type QCOM_RENDER_PASS_TRANSFORM_EXTENSION_NAME = "VK_QCOM_render_pass_transform"

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

newtype SurfaceTransformFlagBitsKHR

VkSurfaceTransformFlagBitsKHR - Presentation transforms supported on a device

See Also

VK_KHR_surface, CommandBufferInheritanceRenderPassTransformInfoQCOM, CopyCommandTransformInfoQCOM, DisplaySurfaceCreateInfoKHR, RenderPassTransformBeginInfoQCOM, SurfaceCapabilities2EXT, SurfaceCapabilitiesKHR, SurfaceTransformFlagsKHR, SwapchainCreateInfoKHR

Constructors

SurfaceTransformFlagBitsKHR Flags

Bundled Patterns

pattern SURFACE_TRANSFORM_IDENTITY_BIT_KHR :: SurfaceTransformFlagBitsKHR

SURFACE_TRANSFORM_IDENTITY_BIT_KHR specifies that image content is presented without being transformed.

pattern SURFACE_TRANSFORM_ROTATE_90_BIT_KHR :: SurfaceTransformFlagBitsKHR

SURFACE_TRANSFORM_ROTATE_90_BIT_KHR specifies that image content is rotated 90 degrees clockwise.

pattern SURFACE_TRANSFORM_ROTATE_180_BIT_KHR :: SurfaceTransformFlagBitsKHR

SURFACE_TRANSFORM_ROTATE_180_BIT_KHR specifies that image content is rotated 180 degrees clockwise.

pattern SURFACE_TRANSFORM_ROTATE_270_BIT_KHR :: SurfaceTransformFlagBitsKHR

SURFACE_TRANSFORM_ROTATE_270_BIT_KHR specifies that image content is rotated 270 degrees clockwise.

pattern SURFACE_TRANSFORM_HORIZONTAL_MIRROR_BIT_KHR :: SurfaceTransformFlagBitsKHR

SURFACE_TRANSFORM_HORIZONTAL_MIRROR_BIT_KHR specifies that image content is mirrored horizontally.

pattern SURFACE_TRANSFORM_HORIZONTAL_MIRROR_ROTATE_90_BIT_KHR :: SurfaceTransformFlagBitsKHR

SURFACE_TRANSFORM_HORIZONTAL_MIRROR_ROTATE_90_BIT_KHR specifies that image content is mirrored horizontally, then rotated 90 degrees clockwise.

pattern SURFACE_TRANSFORM_HORIZONTAL_MIRROR_ROTATE_180_BIT_KHR :: SurfaceTransformFlagBitsKHR

SURFACE_TRANSFORM_HORIZONTAL_MIRROR_ROTATE_180_BIT_KHR specifies that image content is mirrored horizontally, then rotated 180 degrees clockwise.

pattern SURFACE_TRANSFORM_HORIZONTAL_MIRROR_ROTATE_270_BIT_KHR :: SurfaceTransformFlagBitsKHR

SURFACE_TRANSFORM_HORIZONTAL_MIRROR_ROTATE_270_BIT_KHR specifies that image content is mirrored horizontally, then rotated 270 degrees clockwise.

pattern SURFACE_TRANSFORM_INHERIT_BIT_KHR :: SurfaceTransformFlagBitsKHR

SURFACE_TRANSFORM_INHERIT_BIT_KHR specifies that the presentation transform is not specified, and is instead determined by platform-specific considerations and mechanisms outside Vulkan.

Instances

Eq SurfaceTransformFlagBitsKHR

Defined in Vulkan.Extensions.VK_KHR_surface

Methods

(==) :: SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR -> Bool

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

Ord SurfaceTransformFlagBitsKHR

Defined in Vulkan.Extensions.VK_KHR_surface

Methods

compare :: SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR -> Ordering

(<) :: SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR -> Bool

(<=) :: SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR -> Bool

(>) :: SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR -> Bool

(>=) :: SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR -> Bool

max :: SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR

min :: SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR

Read SurfaceTransformFlagBitsKHR

Defined in Vulkan.Extensions.VK_KHR_surface

Methods

readsPrec :: Int -> ReadS SurfaceTransformFlagBitsKHR

readList :: ReadS [SurfaceTransformFlagBitsKHR]

readPrec :: ReadPrec SurfaceTransformFlagBitsKHR

readListPrec :: ReadPrec [SurfaceTransformFlagBitsKHR]

Show SurfaceTransformFlagBitsKHR

Defined in Vulkan.Extensions.VK_KHR_surface

Methods

showsPrec :: Int -> SurfaceTransformFlagBitsKHR -> ShowS

show :: SurfaceTransformFlagBitsKHR -> String

showList :: [SurfaceTransformFlagBitsKHR] -> ShowS

Storable SurfaceTransformFlagBitsKHR

Defined in Vulkan.Extensions.VK_KHR_surface

Methods

sizeOf :: SurfaceTransformFlagBitsKHR -> Int

alignment :: SurfaceTransformFlagBitsKHR -> Int

peekElemOff :: Ptr SurfaceTransformFlagBitsKHR -> Int -> IO SurfaceTransformFlagBitsKHR

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

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

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

peek :: Ptr SurfaceTransformFlagBitsKHR -> IO SurfaceTransformFlagBitsKHR

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

Bits SurfaceTransformFlagBitsKHR

Defined in Vulkan.Extensions.VK_KHR_surface

Methods

(.&.) :: SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR

(.|.) :: SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR

xor :: SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR

complement :: SurfaceTransformFlagBitsKHR -> SurfaceTransformFlagBitsKHR

shift :: SurfaceTransformFlagBitsKHR -> Int -> SurfaceTransformFlagBitsKHR

rotate :: SurfaceTransformFlagBitsKHR -> Int -> SurfaceTransformFlagBitsKHR

zeroBits :: SurfaceTransformFlagBitsKHR

bit :: Int -> SurfaceTransformFlagBitsKHR

setBit :: SurfaceTransformFlagBitsKHR -> Int -> SurfaceTransformFlagBitsKHR

clearBit :: SurfaceTransformFlagBitsKHR -> Int -> SurfaceTransformFlagBitsKHR

complementBit :: SurfaceTransformFlagBitsKHR -> Int -> SurfaceTransformFlagBitsKHR

testBit :: SurfaceTransformFlagBitsKHR -> Int -> Bool

bitSizeMaybe :: SurfaceTransformFlagBitsKHR -> Maybe Int

bitSize :: SurfaceTransformFlagBitsKHR -> Int

isSigned :: SurfaceTransformFlagBitsKHR -> Bool

shiftL :: SurfaceTransformFlagBitsKHR -> Int -> SurfaceTransformFlagBitsKHR

unsafeShiftL :: SurfaceTransformFlagBitsKHR -> Int -> SurfaceTransformFlagBitsKHR

shiftR :: SurfaceTransformFlagBitsKHR -> Int -> SurfaceTransformFlagBitsKHR

unsafeShiftR :: SurfaceTransformFlagBitsKHR -> Int -> SurfaceTransformFlagBitsKHR

rotateL :: SurfaceTransformFlagBitsKHR -> Int -> SurfaceTransformFlagBitsKHR

rotateR :: SurfaceTransformFlagBitsKHR -> Int -> SurfaceTransformFlagBitsKHR

popCount :: SurfaceTransformFlagBitsKHR -> Int

FiniteBits SurfaceTransformFlagBitsKHR

Defined in Vulkan.Extensions.VK_KHR_surface

Methods

finiteBitSize :: SurfaceTransformFlagBitsKHR -> Int

countLeadingZeros :: SurfaceTransformFlagBitsKHR -> Int

countTrailingZeros :: SurfaceTransformFlagBitsKHR -> Int

Zero SurfaceTransformFlagBitsKHR

Defined in Vulkan.Extensions.VK_KHR_surface

Methods

zero :: SurfaceTransformFlagBitsKHR

type SurfaceTransformFlagsKHR = SurfaceTransformFlagBitsKHR