vulkan-tutorial/src/Draw.hs

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2022-07-14 05:02:10 +00:00
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE DuplicateRecordFields #-}
module Draw where
import Control.Monad
import Control.Monad.Trans.Resource
import qualified Data.Vector as V
import qualified Vulkan.Core10 as Vk
import qualified Vulkan.Extensions.VK_KHR_swapchain as Khr
import qualified Vulkan.CStruct.Extends as Vk
import qualified Vulkan.Zero as Vk
drawFrame
:: (MonadResource m)
=> Vk.Device
-> Khr.SwapchainKHR
-> Vk.Queue
-> Vk.CommandBuffer
-> Vk.Fence
-> Vk.Semaphore
-> Vk.Semaphore
-> m ()
drawFrame
logicalDevice
swapchain
graphicsQueue
commandBuffer
inFlightFence
imageAvailableSemaphore
renderFinishedSemaphore
= do
let fences = V.singleton inFlightFence
void $ Vk.waitForFences logicalDevice fences True maxBound
Vk.resetFences logicalDevice fences
(imageResult, index) <-
Khr.acquireNextImageKHR logicalDevice swapchain maxBound imageAvailableSemaphore inFlightFence
unless (imageResult == Vk.SUCCESS) $
error "drawFrame: Failed acquiring next image from swapchain"
Vk.resetCommandBuffer commandBuffer (Vk.CommandBufferResetFlagBits 0)
let submitInfo = Vk.zero
{ Vk.waitSemaphores = V.singleton imageAvailableSemaphore
, Vk.waitDstStageMask = V.singleton Vk.PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT
, Vk.commandBuffers = V.singleton (Vk.commandBufferHandle commandBuffer)
, Vk.signalSemaphores = V.singleton renderFinishedSemaphore
}
Vk.queueSubmit graphicsQueue (V.singleton (Vk.SomeStruct submitInfo)) inFlightFence
let presentInfo = Vk.zero
{ Khr.waitSemaphores = V.singleton renderFinishedSemaphore
, Khr.swapchains = V.singleton swapchain
, Khr.imageIndices = V.singleton index
}
presentResult <- Khr.queuePresentKHR graphicsQueue presentInfo
unless (presentResult == Vk.SUCCESS) $
error "drawFrame: presentation failed"