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dear-imgui.hs/examples/vulkan/Backend.hs
sheaf 0b86356a49
Vulkan backend (#2) 
This commit adds the Vulkan backend and SDL2 integration, and provides the `vulkan` example project.
2021-01-26 20:45:21 +00:00

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{-# LANGUAGE BlockArguments #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveTraversable #-}
{-# LANGUAGE DerivingStrategies #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE MonoLocalBinds #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE UndecidableInstances #-}
module Backend where
-- base
import Control.Category
( (>>>) )
import Control.Monad
( guard, unless, void )
import Data.Bits
( (.&.), (.|.) )
import Data.Coerce
( coerce )
import Data.Foldable
( toList )
import Data.Functor
( (<&>) )
import Data.List
( sortOn )
import Data.Maybe
( fromMaybe )
import Data.Ord
( Down(..) )
import Data.Semigroup
( First(..) )
import Data.String
( fromString )
import Data.Traversable
( for )
import Data.Word
( Word32 )
import Foreign.C.String
( CString )
import Foreign.C.Types
( CInt )
import Foreign.Ptr
( castPtr )
-- bytestring
import Data.ByteString
( ByteString )
import qualified Data.ByteString.Short as ShortByteString
( packCString )
-- containers
import qualified Data.Map.Strict as Map
( empty, insertWith, toList )
-- logging-effect
import Control.Monad.Log
( MonadLog, Severity(..), WithSeverity(..)
, logDebug, logInfo
)
-- resourcet
import Control.Monad.Trans.Resource
( MonadResource )
import qualified Control.Monad.Trans.Resource as ResourceT
( ReleaseKey, allocate )
-- sdl2
import qualified SDL
import qualified SDL.Raw
import qualified SDL.Video.Vulkan
-- text-short
import Data.Text.Short
( ShortText )
import qualified Data.Text.Short as ShortText
( intercalate, pack, fromShortByteString, toByteString, unpack )
-- transformers
import Control.Monad.IO.Class
( MonadIO(liftIO) )
-- unliftio-core
import Control.Monad.IO.Unlift
( MonadUnliftIO )
-- vector
import qualified Data.Vector as Boxed
( Vector )
import qualified Data.Vector as Boxed.Vector
( (!?), empty, find, fromList, imap, imapMaybe, singleton, toList )
-- vulkan
import qualified Vulkan
import qualified Vulkan.CStruct.Extends as Vulkan
import qualified Vulkan.Requirement as Vulkan
import qualified Vulkan.Zero as Vulkan
-- vulkan-utils
import qualified Vulkan.Utils.Initialization as Vulkan.Utils
( createInstanceFromRequirements, createDebugInstanceFromRequirements
, createDeviceFromRequirements
)
-- dear-imgui
import Attachments
( AttachmentType, SubpassAttachments, SubpassAttachmentReferences
, attachmentReferencesAndDescriptions
, createSubpass
)
--------------------------------------------------------------------------------
type LogMessage = WithSeverity ShortText
class ( MonadUnliftIO m, MonadResource m, MonadLog LogMessage m ) => MonadVulkan m
instance ( MonadUnliftIO m, MonadResource m, MonadLog LogMessage m ) => MonadVulkan m
----------------------------------------------------------------------------
-- Logging.
logHandler :: MonadIO m => LogMessage -> m ()
logHandler ( WithSeverity sev mess )
= liftIO . putStrLn . ShortText.unpack $ showSeverity sev <> " " <> mess
showSeverity :: Severity -> ShortText
showSeverity Emergency = "! PANIC !"
showSeverity Alert = "! ALERT !"
showSeverity Critical = "! CRIT !"
showSeverity Error = "[ERR] "
showSeverity Warning = "[WARN] "
showSeverity Notice = "(note) "
showSeverity Informational = "(info) "
showSeverity Debug = "(debug)"
data VulkanContext =
VulkanContext
{ instance' :: !Vulkan.Instance
, physicalDevice :: !Vulkan.PhysicalDevice
, device :: !Vulkan.Device
, queueFamily :: !Word32
, queue :: !Vulkan.Queue
}
data InstanceType
= NormalInstance
| DebugInstance
deriving stock Show
data VulkanRequirements =
VulkanRequirements
{ instanceRequirements :: [ Vulkan.InstanceRequirement ]
, deviceRequirements :: [ Vulkan.DeviceRequirement ]
, queueFlags :: Vulkan.QueueFlags
}
data ValidationLayerName
= LunarG
| Khronos
deriving stock ( Eq, Show )
initialiseVulkanContext :: MonadVulkan m => InstanceType -> ByteString -> VulkanRequirements -> m VulkanContext
initialiseVulkanContext instanceType appName ( VulkanRequirements { instanceRequirements, deviceRequirements, queueFlags } ) = do
logDebug "Creating Vulkan instance"
instanceInfo <- vulkanInstanceInfo appName
instance' <- case instanceType of
NormalInstance -> Vulkan.Utils.createInstanceFromRequirements instanceRequirements [] instanceInfo
DebugInstance -> Vulkan.Utils.createDebugInstanceFromRequirements instanceRequirements [] instanceInfo
physicalDevice <- logDebug "Creating physical device" *> createPhysicalDevice instance'
queueFamily <- logDebug "Finding suitable queue family" *> findQueueFamilyIndex physicalDevice queueFlags
let
queueCreateInfo :: Vulkan.DeviceQueueCreateInfo '[]
queueCreateInfo = Vulkan.zero
{ Vulkan.queueFamilyIndex = fromIntegral queueFamily
, Vulkan.queuePriorities = Boxed.Vector.singleton ( 1.0 :: Float )
}
deviceCreateInfo :: Vulkan.DeviceCreateInfo '[]
deviceCreateInfo = Vulkan.zero { Vulkan.queueCreateInfos = Boxed.Vector.singleton ( Vulkan.SomeStruct queueCreateInfo ) }
swapchainDeviceRequirements :: [ Vulkan.DeviceRequirement ]
swapchainDeviceRequirements
= Vulkan.RequireDeviceExtension Nothing Vulkan.KHR_SWAPCHAIN_EXTENSION_NAME 0
: deviceRequirements
device <- logDebug "Creating logical device" *>
Vulkan.Utils.createDeviceFromRequirements swapchainDeviceRequirements [] physicalDevice deviceCreateInfo
queue <- Vulkan.getDeviceQueue device ( fromIntegral queueFamily ) 0
pure ( VulkanContext { .. } )
vulkanInstanceInfo
:: MonadVulkan m
=> ByteString
-> m ( Vulkan.InstanceCreateInfo '[] )
vulkanInstanceInfo appName = do
( availableLayers :: Boxed.Vector Vulkan.LayerProperties ) <- snd <$> Vulkan.enumerateInstanceLayerProperties
let
validationLayer :: Maybe ValidationLayerName
validationLayer
= coerce
. foldMap
( ( Vulkan.layerName :: Vulkan.LayerProperties -> ByteString )
>>> \case
"VK_LAYER_LUNARG_standard_validation" -> Just ( First LunarG )
"VK_LAYER_KHRONOS_validation" -> Just ( First Khronos )
_ -> Nothing
)
$ availableLayers
enabledLayers :: [ ByteString ]
enabledLayers = case validationLayer of
Nothing -> []
Just LunarG -> [ "VK_LAYER_LUNARG_standard_validation" ]
Just Khronos -> [ "VK_LAYER_KHRONOS_validation" ]
appInfo :: Vulkan.ApplicationInfo
appInfo =
Vulkan.ApplicationInfo
{ Vulkan.applicationName = Just appName
, Vulkan.applicationVersion = 0
, Vulkan.engineName = Nothing
, Vulkan.engineVersion = 0
, Vulkan.apiVersion = Vulkan.API_VERSION_1_2
}
createInfo :: Vulkan.InstanceCreateInfo '[]
createInfo =
Vulkan.InstanceCreateInfo
{ Vulkan.next = ()
, Vulkan.flags = Vulkan.zero
, Vulkan.applicationInfo = Just appInfo
, Vulkan.enabledLayerNames = Boxed.Vector.fromList enabledLayers
, Vulkan.enabledExtensionNames = mempty
}
case validationLayer of
Nothing -> logInfo "Validation layer unavailable. Is the Vulkan SDK installed?"
Just _ -> logInfo ( "Enabled validation layers " <> ShortText.pack ( show enabledLayers ) )
pure createInfo
createPhysicalDevice :: MonadVulkan m => Vulkan.Instance -> m Vulkan.PhysicalDevice
createPhysicalDevice vk = do
physicalDevices <- snd <$> Vulkan.enumeratePhysicalDevices vk
typedDevices <-
for physicalDevices \ physicalDevice -> do
properties <- Vulkan.getPhysicalDeviceProperties physicalDevice
pure ( physicalDevice, Vulkan.deviceType properties )
case Boxed.Vector.find ( isSuitableDeviceType . snd ) typedDevices of
Nothing -> error "Could not find a suitable physical device"
Just ( d, _ ) -> pure d
where
isSuitableDeviceType :: Vulkan.PhysicalDeviceType -> Bool
isSuitableDeviceType
= flip elem
[ Vulkan.PHYSICAL_DEVICE_TYPE_INTEGRATED_GPU
, Vulkan.PHYSICAL_DEVICE_TYPE_DISCRETE_GPU
]
findQueueFamilyIndex
:: MonadIO m
=> Vulkan.PhysicalDevice
-> Vulkan.QueueFlags
-> m Word32
findQueueFamilyIndex physicalDevice requiredFlags = do
queueFamilies <- Vulkan.getPhysicalDeviceQueueFamilyProperties physicalDevice
let
capableFamilyIndices :: Boxed.Vector Int
capableFamilyIndices = ( `Boxed.Vector.imapMaybe` queueFamilies ) \ i queueFamily -> do
guard ( Vulkan.queueFlags queueFamily .&. requiredFlags > Vulkan.zero )
pure i
case capableFamilyIndices Boxed.Vector.!? 0 of
Nothing -> error "No queue family has sufficient capabilities"
Just i -> pure ( fromIntegral i )
instanceExtensions :: [ ByteString ] -> [ Vulkan.InstanceRequirement ]
instanceExtensions = map mkExtensionRequirement
where
mkExtensionRequirement :: ByteString -> Vulkan.InstanceRequirement
mkExtensionRequirement extName =
Vulkan.RequireInstanceExtension
{ Vulkan.instanceExtensionLayerName = Nothing
, Vulkan.instanceExtensionName = extName
, Vulkan.instanceExtensionMinVersion = 0
}
initialiseWindow :: MonadVulkan m => WindowInfo -> m ( SDL.Window, [ ByteString ] )
initialiseWindow ( WindowInfo { height, width, windowName, mouseMode } ) = do
logDebug "Initializing SDL"
SDL.Raw.logSetAllPriority SDL.Raw.SDL_LOG_PRIORITY_VERBOSE
SDL.initialize [ SDL.InitVideo ]
void ( SDL.setMouseLocationMode mouseMode )
window <- logDebug "Creating SDL window" *> createWindow width height windowName
neededExtensions <- logDebug "Loading needed extensions" *> SDL.Video.Vulkan.vkGetInstanceExtensions window
extensionNames <- traverse ( liftIO . peekCString ) neededExtensions
logInfo $ "Needed instance extensions are: " <> ShortText.intercalate ", " extensionNames
pure ( window, map ShortText.toByteString extensionNames )
peekCString :: CString -> IO ShortText
peekCString = fmap ( fromMaybe "???" . ShortText.fromShortByteString ) . ShortByteString.packCString
data WindowInfo
= WindowInfo
{ width :: CInt
, height :: CInt
, windowName :: ShortText
, mouseMode :: SDL.LocationMode
}
createWindow :: MonadVulkan m => CInt -> CInt -> ShortText -> m SDL.Window
createWindow x y title =
snd <$> ResourceT.allocate
( SDL.createWindow
( fromString ( ShortText.unpack title ) )
SDL.defaultWindow
{ SDL.windowGraphicsContext = SDL.VulkanContext
, SDL.windowInitialSize = SDL.V2 x y
, SDL.windowResizable = True
}
)
SDL.destroyWindow
createSurface
:: MonadVulkan m
=> SDL.Window
-> Vulkan.Instance
-> m SDL.Video.Vulkan.VkSurfaceKHR
createSurface window vulkanInstance =
snd <$> ResourceT.allocate
( SDL.Video.Vulkan.vkCreateSurface window ( castPtr $ Vulkan.instanceHandle vulkanInstance ) )
( \ surf -> Vulkan.destroySurfaceKHR vulkanInstance ( Vulkan.SurfaceKHR surf ) Nothing )
assertSurfacePresentable
:: MonadIO m
=> Vulkan.PhysicalDevice
-> Word32
-> SDL.Video.Vulkan.VkSurfaceKHR
-> m ()
assertSurfacePresentable physicalDevice queueFamilyIndex surface = do
isPresentable <-
Vulkan.getPhysicalDeviceSurfaceSupportKHR
physicalDevice
queueFamilyIndex
( Vulkan.SurfaceKHR surface )
unless isPresentable ( error "Surface is not presentable" )
chooseSwapchainFormat
:: MonadIO m
=> Vulkan.SurfaceFormatKHR
-> Vulkan.PhysicalDevice
-> SDL.Video.Vulkan.VkSurfaceKHR
-> m Vulkan.SurfaceFormatKHR
chooseSwapchainFormat
preferredFormat@( Vulkan.SurfaceFormatKHR fmt_p spc_p )
physicalDevice
surface
= do
surfaceFormats <- snd <$> Vulkan.getPhysicalDeviceSurfaceFormatsKHR physicalDevice ( Vulkan.SurfaceKHR surface )
case sortOn ( Down . score ) ( Boxed.Vector.toList surfaceFormats ) of
[] -> error "No formats found."
( best : _ )
| Vulkan.FORMAT_UNDEFINED <- ( Vulkan.format :: Vulkan.SurfaceFormatKHR -> Vulkan.Format ) best
-> pure preferredFormat
| otherwise
-> pure best
where
match :: Eq a => a -> a -> Int
match a b
| a == b = 1
| otherwise = 0
score :: Vulkan.SurfaceFormatKHR -> Int
score ( Vulkan.SurfaceFormatKHR fmt spc )
= match fmt fmt_p
+ match spc spc_p
createSwapchain
:: ( MonadIO m, MonadVulkan m )
=> Vulkan.PhysicalDevice
-> Vulkan.Device
-> SDL.Video.Vulkan.VkSurfaceKHR
-> Vulkan.SurfaceFormatKHR
-> Vulkan.ImageUsageFlags
-> Word32
-> Maybe Vulkan.SwapchainKHR
-> m ( ResourceT.ReleaseKey, Vulkan.SwapchainKHR, Vulkan.Extent2D )
createSwapchain physicalDevice device surface surfaceFormat imageUsage imageCount oldSwapchain = do
surfaceCapabilities <- Vulkan.getPhysicalDeviceSurfaceCapabilitiesKHR physicalDevice ( Vulkan.SurfaceKHR surface )
( _, presentModes ) <- Vulkan.getPhysicalDeviceSurfacePresentModesKHR physicalDevice ( Vulkan.SurfaceKHR surface )
let
presentMode :: Vulkan.PresentModeKHR
presentMode
| Vulkan.PRESENT_MODE_MAILBOX_KHR `elem` presentModes
= Vulkan.PRESENT_MODE_MAILBOX_KHR
| otherwise
= Vulkan.PRESENT_MODE_FIFO_KHR
currentExtent :: Vulkan.Extent2D
currentExtent = ( Vulkan.currentExtent :: Vulkan.SurfaceCapabilitiesKHR -> Vulkan.Extent2D ) surfaceCapabilities
currentTransform :: Vulkan.SurfaceTransformFlagBitsKHR
currentTransform = ( Vulkan.currentTransform :: Vulkan.SurfaceCapabilitiesKHR -> Vulkan.SurfaceTransformFlagBitsKHR ) surfaceCapabilities
swapchainCreateInfo :: Vulkan.SwapchainCreateInfoKHR '[]
swapchainCreateInfo =
Vulkan.SwapchainCreateInfoKHR
{ Vulkan.next = ()
, Vulkan.flags = Vulkan.zero
, Vulkan.surface = Vulkan.SurfaceKHR surface
, Vulkan.minImageCount = imageCount
, Vulkan.imageFormat = ( Vulkan.format :: Vulkan.SurfaceFormatKHR -> Vulkan.Format ) surfaceFormat
, Vulkan.imageColorSpace = ( Vulkan.colorSpace :: Vulkan.SurfaceFormatKHR -> Vulkan.ColorSpaceKHR ) surfaceFormat
, Vulkan.imageExtent = currentExtent
, Vulkan.imageArrayLayers = 1
, Vulkan.imageUsage = imageUsage
, Vulkan.imageSharingMode = Vulkan.SHARING_MODE_EXCLUSIVE
, Vulkan.queueFamilyIndices = Boxed.Vector.empty
, Vulkan.preTransform = currentTransform
, Vulkan.compositeAlpha = Vulkan.COMPOSITE_ALPHA_OPAQUE_BIT_KHR
, Vulkan.presentMode = presentMode
, Vulkan.clipped = True
, Vulkan.oldSwapchain = fromMaybe Vulkan.NULL_HANDLE oldSwapchain
}
( key, swapchain ) <- Vulkan.withSwapchainKHR device swapchainCreateInfo Nothing ResourceT.allocate
pure ( key, swapchain, currentExtent )
simpleRenderPass
:: MonadVulkan m
=> Vulkan.Device
-> SubpassAttachments ( Vulkan.AttachmentDescription, AttachmentType )
-> m ( ResourceT.ReleaseKey, Vulkan.RenderPass )
simpleRenderPass dev attachments = Vulkan.withRenderPass dev createInfo Nothing ResourceT.allocate
where
attachmentReferences :: SubpassAttachmentReferences
attachmentDescriptions :: [ Vulkan.AttachmentDescription ]
( attachmentReferences, attachmentDescriptions )
= attachmentReferencesAndDescriptions attachments
subpass :: Vulkan.SubpassDescription
subpass = createSubpass attachmentReferences
dependency1 :: Vulkan.SubpassDependency
dependency1 =
Vulkan.SubpassDependency
{ Vulkan.srcSubpass = Vulkan.SUBPASS_EXTERNAL
, Vulkan.dstSubpass = Vulkan.zero
, Vulkan.srcStageMask = Vulkan.PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT
, Vulkan.srcAccessMask = Vulkan.zero
, Vulkan.dstStageMask = Vulkan.PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT
, Vulkan.dstAccessMask = Vulkan.ACCESS_COLOR_ATTACHMENT_READ_BIT
.|. Vulkan.ACCESS_COLOR_ATTACHMENT_WRITE_BIT
, Vulkan.dependencyFlags = Vulkan.zero
}
dependency2 :: Vulkan.SubpassDependency
dependency2 =
Vulkan.SubpassDependency
{ Vulkan.srcSubpass = Vulkan.zero
, Vulkan.dstSubpass = Vulkan.SUBPASS_EXTERNAL
, Vulkan.srcStageMask = Vulkan.PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT
, Vulkan.srcAccessMask = Vulkan.ACCESS_COLOR_ATTACHMENT_READ_BIT
.|. Vulkan.ACCESS_COLOR_ATTACHMENT_WRITE_BIT
, Vulkan.dstStageMask = Vulkan.PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT
, Vulkan.dstAccessMask = Vulkan.zero
, Vulkan.dependencyFlags = Vulkan.zero
}
createInfo :: Vulkan.RenderPassCreateInfo '[]
createInfo =
Vulkan.RenderPassCreateInfo
{ Vulkan.next = ()
, Vulkan.flags = Vulkan.zero
, Vulkan.attachments = Boxed.Vector.fromList attachmentDescriptions
, Vulkan.subpasses = Boxed.Vector.singleton subpass
, Vulkan.dependencies = Boxed.Vector.fromList [ dependency1, dependency2 ]
}
cmdBeginRenderPass
:: MonadIO m
=> Vulkan.CommandBuffer
-> Vulkan.RenderPass
-> Vulkan.Framebuffer
-> [ Vulkan.ClearValue ]
-> Vulkan.Extent2D
-> m ()
cmdBeginRenderPass commandBuffer renderPass framebuffer clearValues extent =
let
zeroZero :: Vulkan.Offset2D
zeroZero =
Vulkan.Offset2D
{ Vulkan.x = 0
, Vulkan.y = 0
}
renderArea :: Vulkan.Rect2D
renderArea =
Vulkan.Rect2D
{ Vulkan.offset = zeroZero
, Vulkan.extent = extent
}
beginInfo :: Vulkan.RenderPassBeginInfo '[]
beginInfo =
Vulkan.RenderPassBeginInfo
{ Vulkan.next = ()
, Vulkan.renderPass = renderPass
, Vulkan.framebuffer = framebuffer
, Vulkan.renderArea = renderArea
, Vulkan.clearValues = Boxed.Vector.fromList clearValues
}
in
Vulkan.cmdBeginRenderPass
commandBuffer
beginInfo
Vulkan.SUBPASS_CONTENTS_INLINE
cmdNextSubpass :: MonadIO m => Vulkan.CommandBuffer -> m ()
cmdNextSubpass commandBuffer = Vulkan.cmdNextSubpass commandBuffer Vulkan.SUBPASS_CONTENTS_INLINE
cmdEndRenderPass :: MonadIO m => Vulkan.CommandBuffer -> m ()
cmdEndRenderPass = Vulkan.cmdEndRenderPass
createImageView
:: MonadVulkan m
=> Vulkan.Device
-> Vulkan.Image
-> Vulkan.ImageViewType
-> Vulkan.Format
-> Vulkan.ImageAspectFlags
-> m ( ResourceT.ReleaseKey, Vulkan.ImageView )
createImageView dev image viewType fmt aspect = Vulkan.withImageView dev createInfo Nothing ResourceT.allocate
where
components :: Vulkan.ComponentMapping
components =
Vulkan.ComponentMapping
{ Vulkan.r = Vulkan.COMPONENT_SWIZZLE_IDENTITY
, Vulkan.g = Vulkan.COMPONENT_SWIZZLE_IDENTITY
, Vulkan.b = Vulkan.COMPONENT_SWIZZLE_IDENTITY
, Vulkan.a = Vulkan.COMPONENT_SWIZZLE_IDENTITY
}
subResourceRange :: Vulkan.ImageSubresourceRange
subResourceRange =
Vulkan.ImageSubresourceRange
{ Vulkan.aspectMask = aspect
, Vulkan.baseMipLevel = 0
, Vulkan.levelCount = 1
, Vulkan.baseArrayLayer = 0
, Vulkan.layerCount = 1
}
createInfo :: Vulkan.ImageViewCreateInfo '[]
createInfo =
Vulkan.ImageViewCreateInfo
{ Vulkan.next = ()
, Vulkan.flags = Vulkan.zero
, Vulkan.image = image
, Vulkan.viewType = viewType
, Vulkan.format = fmt
, Vulkan.components = components
, Vulkan.subresourceRange = subResourceRange
}
createFramebuffer
:: ( MonadVulkan m, Foldable f )
=> Vulkan.Device
-> Vulkan.RenderPass
-> Vulkan.Extent2D
-> f Vulkan.ImageView
-> m ( ResourceT.ReleaseKey, Vulkan.Framebuffer )
createFramebuffer dev renderPass extent attachments = Vulkan.withFramebuffer dev createInfo Nothing ResourceT.allocate
where
createInfo :: Vulkan.FramebufferCreateInfo '[]
createInfo =
Vulkan.FramebufferCreateInfo
{ Vulkan.next = ()
, Vulkan.flags = Vulkan.zero
, Vulkan.renderPass = renderPass
, Vulkan.attachments = Boxed.Vector.fromList . toList $ attachments
, Vulkan.width = ( Vulkan.width :: Vulkan.Extent2D -> Word32 ) extent
, Vulkan.height = ( Vulkan.height :: Vulkan.Extent2D -> Word32 ) extent
, Vulkan.layers = 1
}
createDescriptorPool
:: MonadVulkan m
=> Vulkan.Device
-> Int
-> [ ( Vulkan.DescriptorType, Int ) ]
-> m ( ResourceT.ReleaseKey, Vulkan.DescriptorPool )
createDescriptorPool device maxSets descTypes = Vulkan.withDescriptorPool device createInfo Nothing ResourceT.allocate
where
poolSizes :: [ Vulkan.DescriptorPoolSize ]
poolSizes =
counts descTypes <&> \ ( descType, descCount ) ->
Vulkan.DescriptorPoolSize
{ Vulkan.type' = descType
, Vulkan.descriptorCount = fromIntegral $ maxSets * descCount
}
createInfo :: Vulkan.DescriptorPoolCreateInfo '[]
createInfo =
Vulkan.DescriptorPoolCreateInfo
{ Vulkan.next = ()
, Vulkan.flags = Vulkan.DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT
, Vulkan.poolSizes = Boxed.Vector.fromList poolSizes
, Vulkan.maxSets = fromIntegral maxSets
}
counts :: ( Ord a, Num i ) => [ ( a, i ) ] -> [ ( a, i ) ]
counts = Map.toList . foldr ( uncurry $ Map.insertWith (+) ) Map.empty
createDescriptorSetLayout
:: MonadVulkan m
=> Vulkan.Device
-> [ ( Vulkan.DescriptorType, Vulkan.ShaderStageFlags ) ]
-> m ( ResourceT.ReleaseKey, Vulkan.DescriptorSetLayout )
createDescriptorSetLayout device descriptorTypes = Vulkan.withDescriptorSetLayout device createInfo Nothing ResourceT.allocate
where
bindings :: Boxed.Vector Vulkan.DescriptorSetLayoutBinding
bindings = ( `Boxed.Vector.imap` Boxed.Vector.fromList descriptorTypes ) \ i ( descType, descStageFlags ) ->
Vulkan.DescriptorSetLayoutBinding
{ Vulkan.binding = fromIntegral i
, Vulkan.descriptorType = descType
, Vulkan.descriptorCount = 1
, Vulkan.stageFlags = descStageFlags
, Vulkan.immutableSamplers = Boxed.Vector.empty
}
createInfo :: Vulkan.DescriptorSetLayoutCreateInfo '[]
createInfo =
Vulkan.DescriptorSetLayoutCreateInfo
{ Vulkan.next = ()
, Vulkan.flags = Vulkan.zero
, Vulkan.bindings = bindings
}
createCommandPool
:: MonadVulkan m
=> Vulkan.Device
-> Vulkan.CommandPoolCreateFlagBits
-> Word32
-> m Vulkan.CommandPool
createCommandPool dev flags queueFamilyIndex = snd <$> Vulkan.withCommandPool dev createInfo Nothing ResourceT.allocate
where
createInfo :: Vulkan.CommandPoolCreateInfo
createInfo =
Vulkan.CommandPoolCreateInfo
{ Vulkan.flags = flags
, Vulkan.queueFamilyIndex = queueFamilyIndex
}
allocatePrimaryCommandBuffers
:: MonadVulkan m
=> Vulkan.Device
-> Vulkan.CommandPool
-> Word32
-> m ( ResourceT.ReleaseKey, Boxed.Vector Vulkan.CommandBuffer )
allocatePrimaryCommandBuffers dev commandPool count = Vulkan.withCommandBuffers dev allocInfo ResourceT.allocate
where
allocInfo :: Vulkan.CommandBufferAllocateInfo
allocInfo =
Vulkan.CommandBufferAllocateInfo
{ Vulkan.commandPool = commandPool
, Vulkan.level = Vulkan.COMMAND_BUFFER_LEVEL_PRIMARY
, Vulkan.commandBufferCount = count
}
submitCommandBuffer
:: MonadIO m
=> Vulkan.Queue
-> Vulkan.CommandBuffer
-> [ ( Vulkan.Semaphore, Vulkan.PipelineStageFlags ) ]
-> [ Vulkan.Semaphore ]
-> Maybe Vulkan.Fence
-> m ()
submitCommandBuffer queue commandBuffer wait signal mbFence =
Vulkan.queueSubmit queue ( Boxed.Vector.singleton $ Vulkan.SomeStruct submitInfo ) ( fromMaybe Vulkan.NULL_HANDLE mbFence )
where
submitInfo :: Vulkan.SubmitInfo '[]
submitInfo =
Vulkan.SubmitInfo
{ Vulkan.next = ()
, Vulkan.waitSemaphores = Boxed.Vector.fromList $ map fst wait
, Vulkan.waitDstStageMask = Boxed.Vector.fromList $ map snd wait
, Vulkan.commandBuffers = Boxed.Vector.singleton ( Vulkan.commandBufferHandle commandBuffer )
, Vulkan.signalSemaphores = Boxed.Vector.fromList signal
}
beginCommandBuffer :: MonadIO m => Vulkan.CommandBuffer -> m ()
beginCommandBuffer commandBuffer = Vulkan.beginCommandBuffer commandBuffer commandBufferBeginInfo
where
commandBufferBeginInfo :: Vulkan.CommandBufferBeginInfo '[]
commandBufferBeginInfo =
Vulkan.CommandBufferBeginInfo
{ Vulkan.next = ()
, Vulkan.flags = Vulkan.zero
, Vulkan.inheritanceInfo = Nothing
}
endCommandBuffer :: MonadIO m => Vulkan.CommandBuffer -> m ()
endCommandBuffer = Vulkan.endCommandBuffer
createFence :: MonadVulkan m => Vulkan.Device -> m ( ResourceT.ReleaseKey, Vulkan.Fence )
createFence device = Vulkan.withFence device fenceCreateInfo Nothing ResourceT.allocate
where
fenceCreateInfo :: Vulkan.FenceCreateInfo '[]
fenceCreateInfo =
Vulkan.FenceCreateInfo
{ Vulkan.next = ()
, Vulkan.flags = Vulkan.zero
}
data Wait a = WaitAll [a] | WaitAny [a]
waitForFences :: MonadIO m => Vulkan.Device -> Wait Vulkan.Fence -> m ()
waitForFences device fences = void $ Vulkan.waitForFences device ( Boxed.Vector.fromList fenceList ) waitAll maxBound
where
waitAll :: Bool
fenceList :: [Vulkan.Fence]
(waitAll, fenceList) =
case fences of
WaitAll l -> ( True , l )
WaitAny l -> ( False, l )
createPipelineLayout
:: MonadVulkan m
=> Vulkan.Device
-> [ Vulkan.DescriptorSetLayout ]
-> [ Vulkan.PushConstantRange ]
-> m ( ResourceT.ReleaseKey, Vulkan.PipelineLayout )
createPipelineLayout device layouts ranges =
Vulkan.withPipelineLayout device pipelineLayoutCreateInfo Nothing ResourceT.allocate
where
pipelineLayoutCreateInfo :: Vulkan.PipelineLayoutCreateInfo
pipelineLayoutCreateInfo =
Vulkan.PipelineLayoutCreateInfo
{ Vulkan.flags = Vulkan.zero
, Vulkan.setLayouts = Boxed.Vector.fromList layouts
, Vulkan.pushConstantRanges = Boxed.Vector.fromList ranges
}
present
:: MonadIO m
=> Vulkan.Queue
-> Vulkan.SwapchainKHR
-> Word32
-> [Vulkan.Semaphore]
-> m Vulkan.Result
present queue swapchain imageIndex wait = Vulkan.queuePresentKHR queue presentInfo
where
presentInfo :: Vulkan.PresentInfoKHR '[]
presentInfo =
Vulkan.PresentInfoKHR
{ Vulkan.next = ()
, Vulkan.waitSemaphores = Boxed.Vector.fromList wait
, Vulkan.swapchains = Boxed.Vector.singleton swapchain
, Vulkan.imageIndices = Boxed.Vector.singleton imageIndex
, Vulkan.results = Vulkan.zero
}
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