{-# language CPP #-}
-- No documentation found for Chapter "Promoted_From_VK_EXT_scalar_block_layout"
module Vulkan.Core12.Promoted_From_VK_EXT_scalar_block_layout  ( PhysicalDeviceScalarBlockLayoutFeatures(..)
                                                               , StructureType(..)
                                                               ) where

import Foreign.Marshal.Alloc (allocaBytes)
import Foreign.Ptr (nullPtr)
import Foreign.Ptr (plusPtr)
import Vulkan.CStruct (FromCStruct)
import Vulkan.CStruct (FromCStruct(..))
import Vulkan.CStruct (ToCStruct)
import Vulkan.CStruct (ToCStruct(..))
import Vulkan.Zero (Zero(..))
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.Core10.Enums.StructureType (StructureType)
import Vulkan.Core10.Enums.StructureType (StructureType(STRUCTURE_TYPE_PHYSICAL_DEVICE_SCALAR_BLOCK_LAYOUT_FEATURES))
import Vulkan.Core10.Enums.StructureType (StructureType(..))
-- | VkPhysicalDeviceScalarBlockLayoutFeatures - Structure indicating support
-- for scalar block layouts
--
-- = Members
--
-- This structure describes the following feature:
--
-- = Description
--
-- If the 'PhysicalDeviceScalarBlockLayoutFeatures' structure is included
-- in the @pNext@ chain of the
-- 'Vulkan.Core11.Promoted_From_VK_KHR_get_physical_device_properties2.PhysicalDeviceFeatures2'
-- structure passed to
-- 'Vulkan.Core11.Promoted_From_VK_KHR_get_physical_device_properties2.getPhysicalDeviceFeatures2',
-- it is filled in to indicate whether each corresponding feature is
-- supported. 'PhysicalDeviceScalarBlockLayoutFeatures' /can/ also be used
-- in the @pNext@ chain of 'Vulkan.Core10.Device.DeviceCreateInfo' to
-- selectively enable these features.
--
-- == Valid Usage (Implicit)
--
-- = See Also
--
-- <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#VK_EXT_scalar_block_layout VK_EXT_scalar_block_layout>,
-- <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#VK_VERSION_1_2 VK_VERSION_1_2>,
-- 'Vulkan.Core10.FundamentalTypes.Bool32',
-- 'Vulkan.Core10.Enums.StructureType.StructureType'
data PhysicalDeviceScalarBlockLayoutFeatures = PhysicalDeviceScalarBlockLayoutFeatures
  { -- | #extension-features-scalarBlockLayout# @scalarBlockLayout@ indicates
    -- that the implementation supports the layout of resource blocks in
    -- shaders using
    -- <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/html/vkspec.html#interfaces-alignment-requirements scalar alignment>.
    scalarBlockLayout :: Bool }
  deriving (Typeable, Eq)
#if defined(GENERIC_INSTANCES)
deriving instance Generic (PhysicalDeviceScalarBlockLayoutFeatures)
#endif
deriving instance Show PhysicalDeviceScalarBlockLayoutFeatures

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

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

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

instance Zero PhysicalDeviceScalarBlockLayoutFeatures where
  zero = PhysicalDeviceScalarBlockLayoutFeatures
           zero

