From ebe78cb4caea957a4cd7134bf46ae7f26548364f Mon Sep 17 00:00:00 2001
From: Grayson Riffe <grayson@graysonriffe.com>
Date: Wed, 12 Feb 2025 03:24:16 -0600
Subject: [PATCH] Create synchronization objects

---
 .../src/client/render/RenderEngine.cpp        | 19 +++++++++++++++++++
 NothinFancy/src/client/render/RenderEngine.h  |  6 ++++++
 2 files changed, 25 insertions(+)

diff --git a/NothinFancy/src/client/render/RenderEngine.cpp b/NothinFancy/src/client/render/RenderEngine.cpp
index dfe7465..c003ad1 100644
--- a/NothinFancy/src/client/render/RenderEngine.cpp
+++ b/NothinFancy/src/client/render/RenderEngine.cpp
@@ -27,6 +27,9 @@ namespace nf::client::render {
         , m_pipelineOutput()
         , m_commandPool()
         , m_commandBuffer()
+        , m_semaphoreImageAvailable()
+        , m_semaphoreRenderFinished()
+        , m_fenceInFlight()
     {
         NFLog("Initializing render engine");
         m_window->setDisplay(m_display);
@@ -39,6 +42,7 @@ namespace nf::client::render {
         createOutputRenderPass();
         createOutputPipeline();
         createCommandBuffer();
+        createSynchronizationObjects();
 
         m_window->show();
     }
@@ -396,7 +400,22 @@ namespace nf::client::render {
             NFError("Could not create command buffer.");
     }
 
+    void RenderEngine::createSynchronizationObjects() {
+        VkSemaphoreCreateInfo semaphoreCI = { VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO };
+        if (vkCreateSemaphore(m_device, &semaphoreCI, nullptr, &m_semaphoreImageAvailable) != VK_SUCCESS ||
+            vkCreateSemaphore(m_device, &semaphoreCI, nullptr, &m_semaphoreRenderFinished) != VK_SUCCESS)
+            NFError("Could not create semaphore.");
+
+        VkFenceCreateInfo fenceCI = { VK_STRUCTURE_TYPE_FENCE_CREATE_INFO };
+        if (vkCreateFence(m_device, &fenceCI, nullptr, &m_fenceInFlight) != VK_SUCCESS)
+            NFError("Could not create fence.");
+    }
+
     RenderEngine::~RenderEngine() {
+        vkDestroyFence(m_device, m_fenceInFlight, nullptr);
+        vkDestroySemaphore(m_device, m_semaphoreRenderFinished, nullptr);
+        vkDestroySemaphore(m_device, m_semaphoreImageAvailable, nullptr);
+
         vkDestroyCommandPool(m_device, m_commandPool, nullptr);
 
         for (int i = 0; i < m_swapchainFramebuffers.size(); i++)
diff --git a/NothinFancy/src/client/render/RenderEngine.h b/NothinFancy/src/client/render/RenderEngine.h
index 87c80fb..22816d4 100644
--- a/NothinFancy/src/client/render/RenderEngine.h
+++ b/NothinFancy/src/client/render/RenderEngine.h
@@ -19,6 +19,7 @@ namespace nf::client::render {
         void createOutputRenderPass();
         void createOutputPipeline();
         void createCommandBuffer();
+        void createSynchronizationObjects();
 
         std::shared_ptr<Window> m_window;
         DisplayConfig m_display;
@@ -46,5 +47,10 @@ namespace nf::client::render {
         // Command buffers
         VkCommandPool m_commandPool;
         VkCommandBuffer m_commandBuffer;
+
+        // Synchronization objects
+        VkSemaphore m_semaphoreImageAvailable;
+        VkSemaphore m_semaphoreRenderFinished;
+        VkFence m_fenceInFlight;
     };
 }