mirror of
https://github.com/Drezil/dear-imgui.hs.git
synced 2024-11-24 01:27:00 +00:00
247 lines
8.8 KiB
Haskell
247 lines
8.8 KiB
Haskell
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{-# LANGUAGE BlockArguments #-}
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{-# LANGUAGE DataKinds #-}
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{-# LANGUAGE DeriveTraversable #-}
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{-# LANGUAGE DerivingStrategies #-}
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{-# LANGUAGE PatternSynonyms #-}
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{-# LANGUAGE RecordWildCards #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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{-# LANGUAGE TypeApplications #-}
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module Attachments where
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-- base
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import Data.Word
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( Word32 )
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-- vector
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import qualified Data.Vector as Boxed
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( Vector )
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import qualified Data.Vector as Boxed.Vector
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( empty )
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-- vulkan
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import qualified Vulkan
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import qualified Vulkan.Core10.Pass as Vulkan.AttachmentReference
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( AttachmentReference(..) )
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import qualified Vulkan.Zero as Vulkan
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-- dear-imgui
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import Util
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( iunzipWith )
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---------------------------------------------------------------
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-- Attachment types and their corresponding image layouts.
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data AttachmentAccess
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= ReadAttachment
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| ReadWriteAttachment
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deriving stock ( Eq, Show )
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data DepthStencilType =
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DepthStencilType
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{ depth :: Maybe AttachmentAccess
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, stencil :: Maybe AttachmentAccess
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}
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deriving stock ( Eq, Show )
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data InputAttachmentType
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= ColorInputAttachment
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| DepthInputAttachment
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| StencilInputAttachment
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| DepthStencilInputAttachment
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deriving stock ( Eq, Show )
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data AttachmentType
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= ColorAttachment
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| DepthStencilAttachment DepthStencilType
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| InputAttachment InputAttachmentType
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deriving stock ( Eq, Show )
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data AttachmentUsage
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= UseAttachment
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| PreserveAttachment
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| ResolveAttachment
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deriving stock ( Eq, Show )
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depthStencilAttachmentLayout :: DepthStencilType -> Vulkan.ImageLayout
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depthStencilAttachmentLayout
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( DepthStencilType Nothing Nothing )
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= Vulkan.IMAGE_LAYOUT_GENERAL
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depthStencilAttachmentLayout
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( DepthStencilType (Just ReadAttachment) Nothing )
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= Vulkan.IMAGE_LAYOUT_DEPTH_READ_ONLY_OPTIMAL_KHR
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depthStencilAttachmentLayout
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( DepthStencilType (Just ReadWriteAttachment) Nothing )
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= Vulkan.IMAGE_LAYOUT_DEPTH_ATTACHMENT_OPTIMAL_KHR
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depthStencilAttachmentLayout
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( DepthStencilType Nothing (Just ReadAttachment) )
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= Vulkan.IMAGE_LAYOUT_STENCIL_READ_ONLY_OPTIMAL_KHR
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depthStencilAttachmentLayout
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( DepthStencilType Nothing (Just ReadWriteAttachment) )
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= Vulkan.IMAGE_LAYOUT_STENCIL_ATTACHMENT_OPTIMAL_KHR
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depthStencilAttachmentLayout
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( DepthStencilType (Just ReadAttachment) (Just ReadAttachment) )
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= Vulkan.IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL
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depthStencilAttachmentLayout
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( DepthStencilType (Just ReadWriteAttachment) (Just ReadAttachment) )
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= Vulkan.IMAGE_LAYOUT_DEPTH_ATTACHMENT_STENCIL_READ_ONLY_OPTIMAL_KHR
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depthStencilAttachmentLayout
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( DepthStencilType (Just ReadAttachment) (Just ReadWriteAttachment) )
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= Vulkan.IMAGE_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_OPTIMAL_KHR
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depthStencilAttachmentLayout
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( DepthStencilType (Just ReadWriteAttachment) (Just ReadWriteAttachment) )
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= Vulkan.IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL
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inputAttachmentLayout :: InputAttachmentType -> Vulkan.ImageLayout
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inputAttachmentLayout ColorInputAttachment
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= Vulkan.IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL
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inputAttachmentLayout DepthInputAttachment
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= depthStencilAttachmentLayout ( DepthStencilType (Just ReadAttachment) Nothing )
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inputAttachmentLayout StencilInputAttachment
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= depthStencilAttachmentLayout ( DepthStencilType Nothing (Just ReadAttachment) )
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inputAttachmentLayout DepthStencilInputAttachment
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= depthStencilAttachmentLayout ( DepthStencilType (Just ReadAttachment) (Just ReadAttachment) )
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attachmentLayout :: AttachmentType -> Vulkan.ImageLayout
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attachmentLayout ColorAttachment
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= Vulkan.IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL
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attachmentLayout (DepthStencilAttachment depthStencilType)
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= depthStencilAttachmentLayout depthStencilType
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attachmentLayout (InputAttachment inputAttachmentType)
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= inputAttachmentLayout inputAttachmentType
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---------------------------------------------------------------
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-- Some simple attachment descriptions, for convenience.
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presentableColorAttachmentDescription :: Vulkan.Format -> ( Vulkan.AttachmentDescription, AttachmentType )
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presentableColorAttachmentDescription colorFormat =
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( description, ColorAttachment )
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where
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description =
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Vulkan.AttachmentDescription
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{ flags = Vulkan.zero
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, format = colorFormat
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, samples = Vulkan.SAMPLE_COUNT_1_BIT
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, loadOp = Vulkan.ATTACHMENT_LOAD_OP_CLEAR
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, storeOp = Vulkan.ATTACHMENT_STORE_OP_STORE
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, stencilLoadOp = Vulkan.ATTACHMENT_LOAD_OP_DONT_CARE
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, stencilStoreOp = Vulkan.ATTACHMENT_STORE_OP_DONT_CARE
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, initialLayout = Vulkan.IMAGE_LAYOUT_UNDEFINED
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, finalLayout = Vulkan.IMAGE_LAYOUT_PRESENT_SRC_KHR
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}
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depthAttachmentDescription :: Vulkan.Format -> ( Vulkan.AttachmentDescription, AttachmentType )
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depthAttachmentDescription depthFormat =
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( description, DepthStencilAttachment ( DepthStencilType (Just ReadWriteAttachment) Nothing ) )
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where
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description =
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Vulkan.AttachmentDescription
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{ flags = Vulkan.zero
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, format = depthFormat
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, samples = Vulkan.SAMPLE_COUNT_1_BIT
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, loadOp = Vulkan.ATTACHMENT_LOAD_OP_CLEAR
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, storeOp = Vulkan.ATTACHMENT_STORE_OP_STORE
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, stencilLoadOp = Vulkan.ATTACHMENT_LOAD_OP_DONT_CARE
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, stencilStoreOp = Vulkan.ATTACHMENT_STORE_OP_DONT_CARE
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, initialLayout = Vulkan.IMAGE_LAYOUT_UNDEFINED
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, finalLayout = Vulkan.IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL
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}
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msDepthAttachmentDescription
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:: Vulkan.SampleCountFlagBits
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-> Vulkan.Format
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-> ( Vulkan.AttachmentDescription, AttachmentType )
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msDepthAttachmentDescription samples depthFormat =
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( description, DepthStencilAttachment ( DepthStencilType (Just ReadWriteAttachment) Nothing ) )
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where
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description =
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Vulkan.AttachmentDescription
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{ flags = Vulkan.zero
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, format = depthFormat
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, samples = samples
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, loadOp = Vulkan.ATTACHMENT_LOAD_OP_CLEAR
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, storeOp = Vulkan.ATTACHMENT_STORE_OP_STORE
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, stencilLoadOp = Vulkan.ATTACHMENT_LOAD_OP_DONT_CARE
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, stencilStoreOp = Vulkan.ATTACHMENT_STORE_OP_DONT_CARE
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, initialLayout = Vulkan.IMAGE_LAYOUT_UNDEFINED
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, finalLayout = Vulkan.IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL
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}
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msColorAttachmentDescription
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:: Vulkan.SampleCountFlagBits
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-> Vulkan.Format
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-> ( Vulkan.AttachmentDescription, AttachmentType )
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msColorAttachmentDescription samples colorFormat =
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( description, ColorAttachment )
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where
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description =
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Vulkan.AttachmentDescription
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{ flags = Vulkan.zero
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, format = colorFormat
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, samples = samples
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, loadOp = Vulkan.ATTACHMENT_LOAD_OP_CLEAR
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, storeOp = Vulkan.ATTACHMENT_STORE_OP_STORE
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, stencilLoadOp = Vulkan.ATTACHMENT_LOAD_OP_DONT_CARE
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, stencilStoreOp = Vulkan.ATTACHMENT_STORE_OP_DONT_CARE
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, initialLayout = Vulkan.IMAGE_LAYOUT_UNDEFINED
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, finalLayout = Vulkan.IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL
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}
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---------------------------------------------------------------
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-- Set the attachments in a subpass.
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data SubpassAttachments a
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= SubpassAttachments
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{ colorAttachments :: Boxed.Vector a
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, mbDepthStencilAttachment :: Maybe a
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, inputAttachments :: Boxed.Vector a
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, preserveAttachments :: Boxed.Vector a
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, resolveAttachments :: Boxed.Vector a
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} deriving stock ( Functor, Foldable, Traversable )
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type SubpassAttachmentReferences = SubpassAttachments Vulkan.AttachmentReference
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noAttachments :: SubpassAttachments a
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noAttachments =
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SubpassAttachments
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Boxed.Vector.empty
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Nothing
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Boxed.Vector.empty
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Boxed.Vector.empty
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Boxed.Vector.empty
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createSubpass
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:: SubpassAttachmentReferences
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-> Vulkan.SubpassDescription
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createSubpass SubpassAttachments { .. } =
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Vulkan.SubpassDescription
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{ flags = Vulkan.zero
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, colorAttachments = colorAttachments
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, pipelineBindPoint = Vulkan.PIPELINE_BIND_POINT_GRAPHICS
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, depthStencilAttachment = mbDepthStencilAttachment
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, inputAttachments = inputAttachments
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, preserveAttachments = fmap Vulkan.AttachmentReference.attachment preserveAttachments
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, resolveAttachments = resolveAttachments
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}
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attachmentReference :: Word32 -> AttachmentType -> Vulkan.AttachmentReference
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attachmentReference attachmentNumber attachmentType =
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Vulkan.AttachmentReference
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{ attachment = attachmentNumber
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, layout = attachmentLayout attachmentType
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}
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attachmentReferencesAndDescriptions
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:: forall t. Traversable t
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=> t ( Vulkan.AttachmentDescription, AttachmentType )
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-> ( t Vulkan.AttachmentReference, [ Vulkan.AttachmentDescription ] )
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attachmentReferencesAndDescriptions =
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iunzipWith
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( \ i -> attachmentReference i . snd )
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( const fst )
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