vulkan-tutorial/src/Init.hs

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{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE DataKinds #-}
module Init where
import Control.Monad
import Control.Monad.Loops
import Control.Monad.IO.Class
import Control.Monad.Trans.Resource
import Data.Bits
import qualified Data.ByteString as BS
import qualified Data.Vector as V
import Data.Word
import qualified SDL hiding (V2)
import qualified SDL.Video.Vulkan as SDL
import qualified Control.Concurrent.STM as STM
import Foreign.C.Types (CInt)
import Foreign.Ptr
import Linear
import qualified Vulkan as Vk
import qualified Vulkan.Zero as Vk
import qualified Vulkan.CStruct.Extends as Vk
-- internal imports
import Instance
import Devices
initEngine
:: MonadResource m
=> m (SDL.Window, Vk.Instance, Vk.SurfaceKHR, Vk.SwapchainKHR, V.Vector Vk.ImageView)
initEngine = do
-- initialize SDL2 with all subsystems
void $ allocate_
SDL.initializeAll
(do
print ("This is the end!" :: String)
SDL.quit
)
-- create a window configuration
let windowConfig = SDL.defaultWindow
{ SDL.windowGraphicsContext = SDL.VulkanContext -- enable Vulkan support
}
-- load vulkan library
SDL.vkLoadLibrary Nothing
-- create the window
(_, window) <-
allocate
(SDL.createWindow "Haskell ❤️ Vulkan" windowConfig)
(\window -> do
liftIO $ print ("destroying window" :: String)
SDL.destroyWindow window
)
-- create vulkan surface and vulkan instance from window
(surface, inst, swapchain, images) <- initVulkan window
return (window, inst, surface, swapchain, images)
initVulkan
:: MonadResource m
=> SDL.Window
-> m (Vk.SurfaceKHR, Vk.Instance, Vk.SwapchainKHR, V.Vector Vk.ImageView)
initVulkan window = do
vulkanInstance <- createInstance window
(_, vulkanSurface) <- allocate
(Vk.SurfaceKHR <$>
SDL.vkCreateSurface window (castPtr (Vk.instanceHandle vulkanInstance))
)
(\vulkanSurface -> do
print ("destroying Surface" :: String)
Vk.destroySurfaceKHR vulkanInstance vulkanSurface Nothing
)
vulkanPhysicalDevice <- pickPhysicalDevice vulkanInstance
(vulkanLogicalDevice, surfaceFormats) <- createLogicalDevice vulkanPhysicalDevice vulkanSurface
dimensions <- liftIO $ SDL.windowInitialSize <$> SDL.getWindowConfig window
swapchain <- createSwapchain vulkanSurface surfaceFormats dimensions vulkanLogicalDevice
images <- getImageViewHandles swapchain vulkanLogicalDevice
return (vulkanSurface, vulkanInstance, swapchain, images)