I'm getting closer to actually draw…

src/Devices.hs

@@ -9,6 +9,7 @@ import Control.Monad.Trans.Resource
 import qualified Data.Vector as V
 import Data.Maybe (fromMaybe, isNothing)
 import Data.Bits
+import Data.Word (Word32)
 import Foreign.C.Types (CInt)
 import Linear
 import qualified Vulkan as Vk
@@ -53,6 +54,32 @@ pickPhysicalDevice vkInstance = do
 
   return maxMemdiscretePhysDevice
 
+getQueueFamily
+  :: (MonadResource m)
+  => Vk.PhysicalDevice
+  -> Vk.QueueFlagBits
+  -> m Word32
+getQueueFamily physicalDevice distinctBit = do
+
+  queueFamilyProperties <- Vk.getPhysicalDeviceQueueFamilyProperties physicalDevice
+
+  liftIO $ do
+    putStrLn "There are currently following queue families available"
+    print queueFamilyProperties
+
+  let queueFamily = V.foldl
+        (\acc (index, qFamily) ->
+          if Vk.queueFlags qFamily .&. distinctBit /= zeroBits && isNothing acc
+          then Just index
+          else acc
+          )
+        Nothing
+        (V.zip (V.fromList [0..]) queueFamilyProperties)
+
+  return $ fromMaybe
+    (error "getQueueFamilies: The requested queueFamily doesn't seem to exist")
+    queueFamily
+
 createLogicalDevice
   :: (MonadResource m)
   => Vk.PhysicalDevice
@@ -60,28 +87,12 @@ createLogicalDevice
   -> m (Vk.Device, V.Vector Vk.SurfaceFormatKHR)
 createLogicalDevice physDevice surface = do
 
-  queueFamiliyProperties <- Vk.getPhysicalDeviceQueueFamilyProperties physDevice
+  graphicsQueueFamily <- getQueueFamily physDevice Vk.QUEUE_GRAPHICS_BIT
-
-  liftIO $ do
-    putStrLn "There are currently following queue families available"
-    print queueFamiliyProperties
-
-  let graphicsQueueFamilies = V.foldl
-        (\acc (index, queueFamily) ->
-          if Vk.queueFlags queueFamily .&. Vk.QUEUE_GRAPHICS_BIT /= zeroBits && isNothing acc
-          then Just index
-          else acc
-          )
-        Nothing
-        (V.zip (V.fromList [0..]) queueFamiliyProperties)
 
   let priorities = V.singleton 1
       extensionNames = V.singleton Vk.KHR_SWAPCHAIN_EXTENSION_NAME
       queueCreateInfo = Vk.zero
-        { Vk.queueFamilyIndex =
+        { Vk.queueFamilyIndex = graphicsQueueFamily
-          fromMaybe
-            (error "createLogicalDevice: No suitable queu for graphics usage")
-            graphicsQueueFamilies
         , Vk.queuePriorities  = priorities
         }
       deviceCreateInfo = Vk.zero

vulkan-tutorial.cabal

@@ -29,6 +29,7 @@ executable vulkan-tutorial
                       Devices
                       GraphicsPipeline
                       Framebuffers
+                      CommandBuffer
 
     -- LANGUAGE extensions used by modules in this package.
     -- other-extensions: