{-# language CPP #-}
module Vulkan.Extensions.VK_EXT_astc_decode_mode  ( ImageViewASTCDecodeModeEXT(..)
                                                  , PhysicalDeviceASTCDecodeFeaturesEXT(..)
                                                  , EXT_ASTC_DECODE_MODE_SPEC_VERSION
                                                  , pattern EXT_ASTC_DECODE_MODE_SPEC_VERSION
                                                  , EXT_ASTC_DECODE_MODE_EXTENSION_NAME
                                                  , pattern EXT_ASTC_DECODE_MODE_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.Core10.Enums.Format (Format)
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_IMAGE_VIEW_ASTC_DECODE_MODE_EXT))
import Vulkan.Core10.Enums.StructureType (StructureType(STRUCTURE_TYPE_PHYSICAL_DEVICE_ASTC_DECODE_FEATURES_EXT))
-- | VkImageViewASTCDecodeModeEXT - Structure describing the ASTC decode mode
-- for an image view
--
-- == Valid Usage
--
-- -   @decodeMode@ /must/ be one of
--     'Vulkan.Core10.Enums.Format.FORMAT_R16G16B16A16_SFLOAT',
--     'Vulkan.Core10.Enums.Format.FORMAT_R8G8B8A8_UNORM', or
--     'Vulkan.Core10.Enums.Format.FORMAT_E5B9G9R9_UFLOAT_PACK32'
--
-- -   If the
--     <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#features-astc-decodeModeSharedExponent decodeModeSharedExponent>
--     feature is not enabled, @decodeMode@ /must/ not be
--     'Vulkan.Core10.Enums.Format.FORMAT_E5B9G9R9_UFLOAT_PACK32'
--
-- -   If @decodeMode@ is
--     'Vulkan.Core10.Enums.Format.FORMAT_R8G8B8A8_UNORM' the image view
--     /must/ not include blocks using any of the ASTC HDR modes
--
-- -   @format@ of the image view /must/ be one of the
--     <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#appendix-compressedtex-astc ASTC Compressed Image Formats>
--
-- If @format@ uses sRGB encoding then the @decodeMode@ has no effect.
--
-- == Valid Usage (Implicit)
--
-- -   @sType@ /must/ be
--     'Vulkan.Core10.Enums.StructureType.STRUCTURE_TYPE_IMAGE_VIEW_ASTC_DECODE_MODE_EXT'
--
-- -   @decodeMode@ /must/ be a valid 'Vulkan.Core10.Enums.Format.Format'
--     value
--
-- = See Also
--
-- 'Vulkan.Core10.Enums.Format.Format',
-- 'Vulkan.Core10.Enums.StructureType.StructureType'
data ImageViewASTCDecodeModeEXT = ImageViewASTCDecodeModeEXT
  { -- | @decodeMode@ is the intermediate format used to decode ASTC compressed
    -- formats.
    decodeMode :: Format }
  deriving (Typeable, Eq)
#if defined(GENERIC_INSTANCES)
deriving instance Generic (ImageViewASTCDecodeModeEXT)
#endif
deriving instance Show ImageViewASTCDecodeModeEXT

instance ToCStruct ImageViewASTCDecodeModeEXT where
  withCStruct x f = allocaBytesAligned 24 8 $ \p -> pokeCStruct p x (f p)
  pokeCStruct p ImageViewASTCDecodeModeEXT{..} f = do
    poke ((p `plusPtr` 0 :: Ptr StructureType)) (STRUCTURE_TYPE_IMAGE_VIEW_ASTC_DECODE_MODE_EXT)
    poke ((p `plusPtr` 8 :: Ptr (Ptr ()))) (nullPtr)
    poke ((p `plusPtr` 16 :: Ptr Format)) (decodeMode)
    f
  cStructSize = 24
  cStructAlignment = 8
  pokeZeroCStruct p f = do
    poke ((p `plusPtr` 0 :: Ptr StructureType)) (STRUCTURE_TYPE_IMAGE_VIEW_ASTC_DECODE_MODE_EXT)
    poke ((p `plusPtr` 8 :: Ptr (Ptr ()))) (nullPtr)
    poke ((p `plusPtr` 16 :: Ptr Format)) (zero)
    f

instance FromCStruct ImageViewASTCDecodeModeEXT where
  peekCStruct p = do
    decodeMode <- peek @Format ((p `plusPtr` 16 :: Ptr Format))
    pure $ ImageViewASTCDecodeModeEXT
             decodeMode

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

instance Zero ImageViewASTCDecodeModeEXT where
  zero = ImageViewASTCDecodeModeEXT
           zero


-- | VkPhysicalDeviceASTCDecodeFeaturesEXT - Structure describing ASTC decode
-- mode features
--
-- = Members
--
-- The members of the 'PhysicalDeviceASTCDecodeFeaturesEXT' structure
-- describe the following features:
--
-- = Description
--
-- If the 'PhysicalDeviceASTCDecodeFeaturesEXT' 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 each feature is supported.
-- 'PhysicalDeviceASTCDecodeFeaturesEXT' /can/ also be included in the
-- @pNext@ chain of 'Vulkan.Core10.Device.createDevice' to enable features.
--
-- == Valid Usage (Implicit)
--
-- = See Also
--
-- 'Vulkan.Core10.FundamentalTypes.Bool32',
-- 'Vulkan.Core10.Enums.StructureType.StructureType'
data PhysicalDeviceASTCDecodeFeaturesEXT = PhysicalDeviceASTCDecodeFeaturesEXT
  { -- | @decodeModeSharedExponent@ indicates whether the implementation supports
    -- decoding ASTC compressed formats to
    -- 'Vulkan.Core10.Enums.Format.FORMAT_E5B9G9R9_UFLOAT_PACK32' internal
    -- precision.
    decodeModeSharedExponent :: Bool }
  deriving (Typeable, Eq)
#if defined(GENERIC_INSTANCES)
deriving instance Generic (PhysicalDeviceASTCDecodeFeaturesEXT)
#endif
deriving instance Show PhysicalDeviceASTCDecodeFeaturesEXT

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

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

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

instance Zero PhysicalDeviceASTCDecodeFeaturesEXT where
  zero = PhysicalDeviceASTCDecodeFeaturesEXT
           zero


type EXT_ASTC_DECODE_MODE_SPEC_VERSION = 1

-- No documentation found for TopLevel "VK_EXT_ASTC_DECODE_MODE_SPEC_VERSION"
pattern EXT_ASTC_DECODE_MODE_SPEC_VERSION :: forall a . Integral a => a
pattern EXT_ASTC_DECODE_MODE_SPEC_VERSION = 1


type EXT_ASTC_DECODE_MODE_EXTENSION_NAME = "VK_EXT_astc_decode_mode"

-- No documentation found for TopLevel "VK_EXT_ASTC_DECODE_MODE_EXTENSION_NAME"
pattern EXT_ASTC_DECODE_MODE_EXTENSION_NAME :: forall a . (Eq a, IsString a) => a
pattern EXT_ASTC_DECODE_MODE_EXTENSION_NAME = "VK_EXT_astc_decode_mode"