From 3d6ca447a7104c499e92fc954affdaf4bf011388 Mon Sep 17 00:00:00 2001
From: Frederico Linhares <fred@linhares.blue>
Date: Fri, 16 Sep 2022 12:03:04 -0300
Subject: feat Create View

---
 src/vk/swapchain.cpp | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 56 insertions(+), 2 deletions(-)

(limited to 'src/vk/swapchain.cpp')

diff --git a/src/vk/swapchain.cpp b/src/vk/swapchain.cpp
index 678279e..1dd19d9 100644
--- a/src/vk/swapchain.cpp
+++ b/src/vk/swapchain.cpp
@@ -127,9 +127,62 @@ unload_image_view(void *obj)
       cg_core.vk_device_with_swapchain->device, self->image_views[i], nullptr);
 }
 
+void
+load_frame_sync(void *obj)
+{
+  auto self = static_cast<VK::Swapchain*>(obj);
+
+  self->image_available_semaphores.resize(self->max_frames_in_flight);
+  self->render_finished_semaphores.resize(self->max_frames_in_flight);
+  self->in_flight_fences.resize(self->max_frames_in_flight);
+
+  VkSemaphoreCreateInfo semaphore_info = {};
+  semaphore_info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
+  semaphore_info.pNext = nullptr;
+  semaphore_info.flags = 0;
+
+  VkFenceCreateInfo fence_info = {};
+  fence_info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
+  fence_info.pNext = nullptr;
+  fence_info.flags = VK_FENCE_CREATE_SIGNALED_BIT;
+
+  // FIXME: if this loop fails, it will not destroy the semaphores.
+  for(auto i{0}; i < self->max_frames_in_flight; i++)
+  {
+    if(vkCreateSemaphore(
+	 cg_core.vk_device_with_swapchain->device, &semaphore_info,
+	 nullptr, &self->image_available_semaphores[i]) != VK_SUCCESS ||
+       vkCreateSemaphore(
+	 cg_core.vk_device_with_swapchain->device, &semaphore_info,
+	 nullptr, &self->render_finished_semaphores[i]) != VK_SUCCESS ||
+       vkCreateFence(cg_core.vk_device_with_swapchain->device, &fence_info,
+                     nullptr, &self->in_flight_fences[i]) != VK_SUCCESS)
+      throw CommandError{"Failed to create semaphores."};
+  }
+}
+
+void
+unload_frame_sync(void *obj)
+{
+  auto self = static_cast<VK::Swapchain*>(obj);
+
+  vkDeviceWaitIdle(cg_core.vk_device_with_swapchain->device);
+
+  for(auto i{0}; i < self->max_frames_in_flight; i++)
+  {
+    vkDestroySemaphore(cg_core.vk_device_with_swapchain->device,
+                       self->render_finished_semaphores[i], nullptr);
+    vkDestroySemaphore(cg_core.vk_device_with_swapchain->device,
+                       self->image_available_semaphores[i], nullptr);
+    vkDestroyFence(cg_core.vk_device_with_swapchain->device,
+		   self->in_flight_fences[i], nullptr);
+  }
+}
+
 const CommandChain loader{
   {&load_swapchain, &unload_swapchain},
-  {&load_image_view, &unload_image_view}
+  {&load_image_view, &unload_image_view},
+  {&load_frame_sync, &unload_frame_sync}
 };
 
 }
@@ -137,7 +190,8 @@ const CommandChain loader{
 namespace VK
 {
 
-Swapchain::Swapchain()
+Swapchain::Swapchain():
+  current_frame{0}
 {
   loader.execute(this);
 }
-- 
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