Mercurial > games > semicongine

changeset 908:75a544b946ea

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did: always use FIFO swapchain mode, as recommended in a talk on the Vulkan youtube channel (except you know what you are doing, which is cleary not the case here)
author Sam <sam@basx.dev>
date Tue, 05 Mar 2024 14:26:46 +0700
parents d9b250767942
children f4bc149a385c
files semicongine/vulkan/swapchain.nim
diffstat 1 files changed, 4 insertions(+), 24 deletions(-) [+]
line wrap: on
line diff
--- a/semicongine/vulkan/swapchain.nim	Sat Mar 02 18:46:45 2024 +0700
+++ b/semicongine/vulkan/swapchain.nim	Tue Mar 05 14:26:46 2024 +0700
@@ -30,7 +30,6 @@
     surfaceFormat: VkSurfaceFormatKHR
     queueFamily: QueueFamily
     imageCount: uint32
-    presentMode: VkPresentModeKHR
     inFlightFrames*: int
 
 
@@ -40,7 +39,6 @@
   surfaceFormat: VkSurfaceFormatKHR,
   queueFamily: QueueFamily,
   desiredNumberOfImages = 3'u32,
-  preferedPresentMode: VkPresentModeKHR = VK_PRESENT_MODE_MAILBOX_KHR,
   inFlightFrames = 2,
   oldSwapchain = VkSwapchainKHR(0)
 ): Option[Swapchain] =
@@ -55,28 +53,10 @@
 
   var imageCount = desiredNumberOfImages
 
-  const PRESENTMODES_BY_PREFERENCE = [
-    VK_PRESENT_MODE_MAILBOX_KHR,
-    VK_PRESENT_MODE_FIFO_RELAXED_KHR,
-    VK_PRESENT_MODE_FIFO_KHR,
-    VK_PRESENT_MODE_IMMEDIATE_KHR,
-    VK_PRESENT_MODE_SHARED_CONTINUOUS_REFRESH_KHR,
-    VK_PRESENT_MODE_SHARED_DEMAND_REFRESH_KHR,
-  ]
-  var supportedModes = device.physicalDevice.getSurfacePresentModes()
-  var presentMode: VkPresentModeKHR
-  for mode in PRESENTMODES_BY_PREFERENCE:
-    if mode in supportedModes:
-      presentMode = mode
-      break
-
   # following is according to vulkan specs
-  if presentMode in [VK_PRESENT_MODE_SHARED_DEMAND_REFRESH_KHR, VK_PRESENT_MODE_SHARED_CONTINUOUS_REFRESH_KHR]:
-    imageCount = 1
-  else:
-    imageCount = max(imageCount, capabilities.minImageCount)
-    if capabilities.maxImageCount != 0:
-      imageCount = min(imageCount, capabilities.maxImageCount)
+  imageCount = max(imageCount, capabilities.minImageCount)
+  if capabilities.maxImageCount != 0:
+    imageCount = min(imageCount, capabilities.maxImageCount)
   var createInfo = VkSwapchainCreateInfoKHR(
     sType: VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR,
     surface: device.physicalDevice.surface,
@@ -90,7 +70,7 @@
     imageSharingMode: VK_SHARING_MODE_EXCLUSIVE,
     preTransform: capabilities.currentTransform,
     compositeAlpha: VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR, # only used for blending with other windows, can be opaque
-    presentMode: presentMode,
+    presentMode: VK_PRESENT_MODE_FIFO_KHR,
     clipped: true,
     oldSwapchain: oldSwapchain,
   )