{-# language CPP #-}
-- No documentation found for Chapter "Promoted_From_VK_KHR_shader_draw_parameters"
module Vulkan.Core11.Promoted_From_VK_KHR_shader_draw_parameters  ( pattern STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_DRAW_PARAMETER_FEATURES
                                                                  , PhysicalDeviceShaderDrawParametersFeatures(..)
                                                                  , PhysicalDeviceShaderDrawParameterFeatures
                                                                  , 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_SHADER_DRAW_PARAMETERS_FEATURES))
import Vulkan.Core10.Enums.StructureType (StructureType(..))
-- No documentation found for TopLevel "VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_DRAW_PARAMETER_FEATURES"
pattern STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_DRAW_PARAMETER_FEATURES = STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_DRAW_PARAMETERS_FEATURES


-- | VkPhysicalDeviceShaderDrawParametersFeatures - Structure describing
-- shader draw parameter features that can be supported by an
-- implementation
--
-- = Members
--
-- This structure describes the following feature:
--
-- = Description
--
-- If the 'PhysicalDeviceShaderDrawParametersFeatures' 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. 'PhysicalDeviceShaderDrawParametersFeatures' /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_VERSION_1_1 VK_VERSION_1_1>,
-- 'Vulkan.Core10.FundamentalTypes.Bool32',
-- 'Vulkan.Core10.Enums.StructureType.StructureType'
data PhysicalDeviceShaderDrawParametersFeatures = PhysicalDeviceShaderDrawParametersFeatures
  { -- | #extension-features-shaderDrawParameters# @shaderDrawParameters@
    -- specifies whether the implementation supports the SPIR-V
    -- @DrawParameters@ capability. When this feature is not enabled, shader
    -- modules /must/ not declare the @SPV_KHR_shader_draw_parameters@
    -- extension or the @DrawParameters@ capability.
    shaderDrawParameters :: Bool }
  deriving (Typeable, Eq)
#if defined(GENERIC_INSTANCES)
deriving instance Generic (PhysicalDeviceShaderDrawParametersFeatures)
#endif
deriving instance Show PhysicalDeviceShaderDrawParametersFeatures

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

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

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

instance Zero PhysicalDeviceShaderDrawParametersFeatures where
  zero = PhysicalDeviceShaderDrawParametersFeatures
           zero


-- No documentation found for TopLevel "VkPhysicalDeviceShaderDrawParameterFeatures"
type PhysicalDeviceShaderDrawParameterFeatures = PhysicalDeviceShaderDrawParametersFeatures