{-# language CPP #-}
module Vulkan.Extensions.VK_NV_representative_fragment_test  ( PhysicalDeviceRepresentativeFragmentTestFeaturesNV(..)
                                                             , PipelineRepresentativeFragmentTestStateCreateInfoNV(..)
                                                             , NV_REPRESENTATIVE_FRAGMENT_TEST_SPEC_VERSION
                                                             , pattern NV_REPRESENTATIVE_FRAGMENT_TEST_SPEC_VERSION
                                                             , NV_REPRESENTATIVE_FRAGMENT_TEST_EXTENSION_NAME
                                                             , pattern NV_REPRESENTATIVE_FRAGMENT_TEST_EXTENSION_NAME
                                                             ) where

import Foreign.Marshal.Alloc (allocaBytesAligned)
import Foreign.Ptr (nullPtr)
import Foreign.Ptr (plusPtr)
import Data.String (IsString)
import Data.Typeable (Typeable)
import Foreign.Storable (Storable)
import Foreign.Storable (Storable(peek))
import Foreign.Storable (Storable(poke))
import qualified Foreign.Storable (Storable(..))
import GHC.Generics (Generic)
import Foreign.Ptr (Ptr)
import Data.Kind (Type)
import Vulkan.Core10.FundamentalTypes (bool32ToBool)
import Vulkan.Core10.FundamentalTypes (boolToBool32)
import Vulkan.Core10.FundamentalTypes (Bool32)
import Vulkan.CStruct (FromCStruct)
import Vulkan.CStruct (FromCStruct(..))
import Vulkan.Core10.Enums.StructureType (StructureType)
import Vulkan.CStruct (ToCStruct)
import Vulkan.CStruct (ToCStruct(..))
import Vulkan.Zero (Zero(..))
import Vulkan.Core10.Enums.StructureType (StructureType(STRUCTURE_TYPE_PHYSICAL_DEVICE_REPRESENTATIVE_FRAGMENT_TEST_FEATURES_NV))
import Vulkan.Core10.Enums.StructureType (StructureType(STRUCTURE_TYPE_PIPELINE_REPRESENTATIVE_FRAGMENT_TEST_STATE_CREATE_INFO_NV))
-- | VkPhysicalDeviceRepresentativeFragmentTestFeaturesNV - Structure
-- describing the representative fragment test features that can be
-- supported by an implementation
--
-- = Members
--
-- The members of the 'PhysicalDeviceRepresentativeFragmentTestFeaturesNV'
-- structure describe the following features:
--
-- = Description
--
-- If the 'PhysicalDeviceRepresentativeFragmentTestFeaturesNV' structure is
-- included in the @pNext@ chain of
-- 'Vulkan.Core11.Promoted_From_VK_KHR_get_physical_device_properties2.PhysicalDeviceFeatures2',
-- it is filled with values indicating whether the feature is supported.
-- 'PhysicalDeviceRepresentativeFragmentTestFeaturesNV' /can/ also be
-- included in the @pNext@ chain of 'Vulkan.Core10.Device.DeviceCreateInfo'
-- to enable the feature.
--
-- == Valid Usage (Implicit)
--
-- = See Also
--
-- 'Vulkan.Core10.FundamentalTypes.Bool32',
-- 'Vulkan.Core10.Enums.StructureType.StructureType'
data PhysicalDeviceRepresentativeFragmentTestFeaturesNV = PhysicalDeviceRepresentativeFragmentTestFeaturesNV
  { -- | @representativeFragmentTest@ indicates whether the implementation
    -- supports the representative fragment test. See
    -- <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#fragops-rep-frag-test Representative Fragment Test>.
    representativeFragmentTest :: Bool }
  deriving (Typeable, Eq)
#if defined(GENERIC_INSTANCES)
deriving instance Generic (PhysicalDeviceRepresentativeFragmentTestFeaturesNV)
#endif
deriving instance Show PhysicalDeviceRepresentativeFragmentTestFeaturesNV

instance ToCStruct PhysicalDeviceRepresentativeFragmentTestFeaturesNV where
  withCStruct x f = allocaBytesAligned 24 8 $ \p -> pokeCStruct p x (f p)
  pokeCStruct p PhysicalDeviceRepresentativeFragmentTestFeaturesNV{..} f = do
    poke ((p `plusPtr` 0 :: Ptr StructureType)) (STRUCTURE_TYPE_PHYSICAL_DEVICE_REPRESENTATIVE_FRAGMENT_TEST_FEATURES_NV)
    poke ((p `plusPtr` 8 :: Ptr (Ptr ()))) (nullPtr)
    poke ((p `plusPtr` 16 :: Ptr Bool32)) (boolToBool32 (representativeFragmentTest))
    f
  cStructSize = 24
  cStructAlignment = 8
  pokeZeroCStruct p f = do
    poke ((p `plusPtr` 0 :: Ptr StructureType)) (STRUCTURE_TYPE_PHYSICAL_DEVICE_REPRESENTATIVE_FRAGMENT_TEST_FEATURES_NV)
    poke ((p `plusPtr` 8 :: Ptr (Ptr ()))) (nullPtr)
    poke ((p `plusPtr` 16 :: Ptr Bool32)) (boolToBool32 (zero))
    f

instance FromCStruct PhysicalDeviceRepresentativeFragmentTestFeaturesNV where
  peekCStruct p = do
    representativeFragmentTest <- peek @Bool32 ((p `plusPtr` 16 :: Ptr Bool32))
    pure $ PhysicalDeviceRepresentativeFragmentTestFeaturesNV
             (bool32ToBool representativeFragmentTest)

instance Storable PhysicalDeviceRepresentativeFragmentTestFeaturesNV where
  sizeOf ~_ = 24
  alignment ~_ = 8
  peek = peekCStruct
  poke ptr poked = pokeCStruct ptr poked (pure ())

instance Zero PhysicalDeviceRepresentativeFragmentTestFeaturesNV where
  zero = PhysicalDeviceRepresentativeFragmentTestFeaturesNV
           zero


-- | VkPipelineRepresentativeFragmentTestStateCreateInfoNV - Structure
-- specifying representative fragment test
--
-- = Description
--
-- If this structure is not present, @representativeFragmentTestEnable@ is
-- considered to be 'Vulkan.Core10.FundamentalTypes.FALSE', and the
-- representative fragment test is disabled.
--
-- If
-- <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#shaders-fragment-earlytest early fragment tests>
-- are not enabled in the active fragment shader, the representative
-- fragment shader test has no effect, even if enabled.
--
-- == Valid Usage (Implicit)
--
-- = See Also
--
-- 'Vulkan.Core10.FundamentalTypes.Bool32',
-- 'Vulkan.Core10.Enums.StructureType.StructureType'
data PipelineRepresentativeFragmentTestStateCreateInfoNV = PipelineRepresentativeFragmentTestStateCreateInfoNV
  { -- | @representativeFragmentTestEnable@ controls whether the representative
    -- fragment test is enabled.
    representativeFragmentTestEnable :: Bool }
  deriving (Typeable, Eq)
#if defined(GENERIC_INSTANCES)
deriving instance Generic (PipelineRepresentativeFragmentTestStateCreateInfoNV)
#endif
deriving instance Show PipelineRepresentativeFragmentTestStateCreateInfoNV

instance ToCStruct PipelineRepresentativeFragmentTestStateCreateInfoNV where
  withCStruct x f = allocaBytesAligned 24 8 $ \p -> pokeCStruct p x (f p)
  pokeCStruct p PipelineRepresentativeFragmentTestStateCreateInfoNV{..} f = do
    poke ((p `plusPtr` 0 :: Ptr StructureType)) (STRUCTURE_TYPE_PIPELINE_REPRESENTATIVE_FRAGMENT_TEST_STATE_CREATE_INFO_NV)
    poke ((p `plusPtr` 8 :: Ptr (Ptr ()))) (nullPtr)
    poke ((p `plusPtr` 16 :: Ptr Bool32)) (boolToBool32 (representativeFragmentTestEnable))
    f
  cStructSize = 24
  cStructAlignment = 8
  pokeZeroCStruct p f = do
    poke ((p `plusPtr` 0 :: Ptr StructureType)) (STRUCTURE_TYPE_PIPELINE_REPRESENTATIVE_FRAGMENT_TEST_STATE_CREATE_INFO_NV)
    poke ((p `plusPtr` 8 :: Ptr (Ptr ()))) (nullPtr)
    poke ((p `plusPtr` 16 :: Ptr Bool32)) (boolToBool32 (zero))
    f

instance FromCStruct PipelineRepresentativeFragmentTestStateCreateInfoNV where
  peekCStruct p = do
    representativeFragmentTestEnable <- peek @Bool32 ((p `plusPtr` 16 :: Ptr Bool32))
    pure $ PipelineRepresentativeFragmentTestStateCreateInfoNV
             (bool32ToBool representativeFragmentTestEnable)

instance Storable PipelineRepresentativeFragmentTestStateCreateInfoNV where
  sizeOf ~_ = 24
  alignment ~_ = 8
  peek = peekCStruct
  poke ptr poked = pokeCStruct ptr poked (pure ())

instance Zero PipelineRepresentativeFragmentTestStateCreateInfoNV where
  zero = PipelineRepresentativeFragmentTestStateCreateInfoNV
           zero


type NV_REPRESENTATIVE_FRAGMENT_TEST_SPEC_VERSION = 2

-- No documentation found for TopLevel "VK_NV_REPRESENTATIVE_FRAGMENT_TEST_SPEC_VERSION"
pattern NV_REPRESENTATIVE_FRAGMENT_TEST_SPEC_VERSION :: forall a . Integral a => a
pattern NV_REPRESENTATIVE_FRAGMENT_TEST_SPEC_VERSION = 2


type NV_REPRESENTATIVE_FRAGMENT_TEST_EXTENSION_NAME = "VK_NV_representative_fragment_test"

-- No documentation found for TopLevel "VK_NV_REPRESENTATIVE_FRAGMENT_TEST_EXTENSION_NAME"
pattern NV_REPRESENTATIVE_FRAGMENT_TEST_EXTENSION_NAME :: forall a . (Eq a, IsString a) => a
pattern NV_REPRESENTATIVE_FRAGMENT_TEST_EXTENSION_NAME = "VK_NV_representative_fragment_test"