Removed uneeded std::optional uses

main.cpp

@@ -30,7 +30,7 @@ int main()
         return -1;
 
     /* Runs Vulkan initialisation functions */
-    if (!VulkanManager::InitAll(window))
+    if (!VulkanManager::Init(window))
         CleanupAllAndExit(EXIT_FAILURE);
 
     /* Polls window events whilst it is still open */

src/managers/VulkanManager.h

@@ -6,12 +6,16 @@ namespace PB::Renderer
 {
     struct QueueFamilyIndices
     {
-        std::optional<uint32_t> graphicsFamily = std::nullopt;
+        static constexpr uint32_t UNDEFINED_UINT32_VALUE = 0xFFFFFFFF;
-        std::optional<uint32_t> presentFamily = std::nullopt;
+
+        uint32_t graphicsFamily = UNDEFINED_UINT32_VALUE;
+        uint32_t presentFamily = UNDEFINED_UINT32_VALUE;
 
         [[nodiscard]] bool Complete() const
         {
-            return graphicsFamily && presentFamily;
+            return
+                graphicsFamily != UNDEFINED_UINT32_VALUE &&
+                presentFamily != UNDEFINED_UINT32_VALUE;
         }
     };
 
@@ -25,14 +29,15 @@ namespace PB::Renderer
     class VulkanManager
     {
         public:
+            /* Static class so (de)constructors have been deleted to stop accidental creation */
             VulkanManager() = delete;
             ~VulkanManager() = delete;
 
-            static bool InitAll(GLFWwindow* window);
+            static bool Init(GLFWwindow* window);
-            static std::optional<VkInstance> Init();
             static bool Cleanup();
 
-            static std::optional<VkSurfaceKHR> CreateSurface(GLFWwindow* window);
+            static bool CreateInstance();
+            static bool CreateSurface(GLFWwindow* window);
             static bool PickPhysicalDevice();
             static bool CreateLogicalDevice();
             static bool CreateSwapChain(GLFWwindow* window);
@@ -41,7 +46,7 @@ namespace PB::Renderer
             static bool CreateFramebuffer();
             static bool CreateGraphicsPipeline();
             static bool CreateCommandBuffers();
-            static void CreateSemaphores();
+            static bool CreateSemaphores();
 
             static bool RenderPass();
 
@@ -57,8 +62,8 @@ namespace PB::Renderer
 
             static VkShaderModule CreateShaderModule(const std::string& filename);
 
-            static std::optional<VkInstance> s_Instance;
+            static VkInstance s_Instance;
-            static std::optional<VkSurfaceKHR> s_Surface;
+            static VkSurfaceKHR s_Surface;
 
             static VkPhysicalDevice s_PhysicalDevice;
             static QueueFamilyIndices s_QueueIndices;

src/managers/VulkanManagerInit.cpp

@@ -2,8 +2,8 @@
 
 namespace PB::Renderer
 {
-    std::optional<VkInstance> VulkanManager::s_Instance = std::nullopt;
+    VkInstance VulkanManager::s_Instance = VK_NULL_HANDLE;
-    std::optional<VkSurfaceKHR> VulkanManager::s_Surface = std::nullopt;
+    VkSurfaceKHR VulkanManager::s_Surface = VK_NULL_HANDLE;
 
     VkPhysicalDevice VulkanManager::s_PhysicalDevice = VK_NULL_HANDLE;
     QueueFamilyIndices VulkanManager::s_QueueIndices;
@@ -31,15 +31,11 @@ namespace PB::Renderer
     VkSemaphore VulkanManager::s_ImageAvailableSemaphore = VK_NULL_HANDLE;
     VkSemaphore VulkanManager::s_RenderFinishedSemaphore = VK_NULL_HANDLE;
 
-    bool VulkanManager::InitAll(GLFWwindow* window)
+    bool VulkanManager::Init(GLFWwindow* window)
     {
-        if (const std::optional<VkInstance> instance = Init(); !instance)
+        return
-            return false;
+            CreateInstance()             &&
-
+            CreateSurface(window)        &&
-        if (const std::optional<VkSurfaceKHR> surface = CreateSurface(window); !surface)
-            return false;
-
-        if (!(
             PickPhysicalDevice()         &&
             CreateLogicalDevice()        &&
             CreateSwapChain(window)      &&
@@ -47,21 +43,56 @@ namespace PB::Renderer
             CreateRenderPass()           &&
             CreateFramebuffer()          &&
             CreateGraphicsPipeline()     &&
-            CreateCommandBuffers()
+            CreateCommandBuffers()       &&
-        )) {
+            CreateSemaphores();
-            return false;
     }
 
-        CreateSemaphores();
+    bool VulkanManager::Cleanup()
+    {
+        if (s_Device != VK_NULL_HANDLE)
+            vkDeviceWaitIdle(s_Device);
+
+        if (s_ImageAvailableSemaphore != VK_NULL_HANDLE)
+            vkDestroySemaphore(s_Device, s_ImageAvailableSemaphore, nullptr);
+
+        if (s_RenderFinishedSemaphore != VK_NULL_HANDLE)
+            vkDestroySemaphore(s_Device, s_RenderFinishedSemaphore, nullptr);
+
+        if (s_CommandPool != VK_NULL_HANDLE)
+            vkDestroyCommandPool(s_Device, s_CommandPool, nullptr);
+
+        for (const VkFramebuffer& fb : s_Framebuffers)
+            vkDestroyFramebuffer(s_Device, fb, nullptr);
+
+        if (s_RenderPipeline != VK_NULL_HANDLE)
+            vkDestroyPipeline(s_Device, s_RenderPipeline, nullptr);
+
+        if (s_PipelineLayout != VK_NULL_HANDLE)
+            vkDestroyPipelineLayout(s_Device, s_PipelineLayout, nullptr);
+
+        if (s_RenderPass != VK_NULL_HANDLE)
+            vkDestroyRenderPass(s_Device, s_RenderPass, nullptr);
+
+        for (const VkImageView& view : s_SwapChainImageViews)
+            vkDestroyImageView(s_Device, view, nullptr);
+
+        if (s_SwapChain != VK_NULL_HANDLE)
+            vkDestroySwapchainKHR(s_Device, s_SwapChain, nullptr);
+
+        if (s_Device != VK_NULL_HANDLE)
+            vkDestroyDevice(s_Device, nullptr);
+
+        if (s_Surface != VK_NULL_HANDLE)
+            vkDestroySurfaceKHR(s_Instance, s_Surface, nullptr);
+
+        if (s_Instance != VK_NULL_HANDLE)
+            vkDestroyInstance(s_Instance, nullptr);
+
         return true;
     }
 
-    std::optional<VkInstance> VulkanManager::Init()
+    bool VulkanManager::CreateInstance()
     {
-        /* Stops multi initialisation */
-        if (s_Instance != std::nullopt)
-            return s_Instance;
-
         VkApplicationInfo appInfo;
         appInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
         appInfo.pNext = nullptr;
@@ -89,56 +120,30 @@ namespace PB::Renderer
         if (vkCreateInstance(&createInfo, nullptr, &instance) != VK_SUCCESS)
         {
             std::cout << "PB::Renderer::VulkanManager::Init(): Could not create Vulkan instance" << std::endl;
-            return std::nullopt;
+            return false;
         }
 
         s_Instance = instance;
-        return instance;
-    }
-
-    bool VulkanManager::Cleanup()
-    {
-        if (s_Surface != std::nullopt)
-            vkDestroySurfaceKHR(s_Instance.value(), s_Surface.value(), nullptr);
-
-        if (s_Instance != std::nullopt)
-            vkDestroyInstance(s_Instance.value(), nullptr);
-
-        s_Instance = std::nullopt;
         return true;
     }
 
-    std::optional<VkSurfaceKHR> VulkanManager::CreateSurface(GLFWwindow* window)
+    bool VulkanManager::CreateSurface(GLFWwindow* window)
     {
-        if (s_Instance == std::nullopt)
-        {
-            std::cout << "PB::Renderer::VulkanManager::CreateSurface(): No Vulkan instance" << std::endl;
-            return std::nullopt;
-        }
-
         VkSurfaceKHR surface;
-        if (glfwCreateWindowSurface(s_Instance.value(), window, nullptr, &surface) != VK_SUCCESS)
+        if (glfwCreateWindowSurface(s_Instance, window, nullptr, &surface) != VK_SUCCESS)
         {
             std::cout << "PB::Renderer::VulkanManager::CreateSurface(): Failed to create Vulkan Surface" << std::endl;
-            return std::nullopt;
+            return false;
         }
 
         s_Surface = surface;
-        return surface;
+        return true;
     }
 
     bool VulkanManager::PickPhysicalDevice()
     {
-        if (s_Instance == std::nullopt || s_Surface == std::nullopt)
-        {
-            std::cout << "PB::Renderer::VulkanManager::PickPhysicalDevice(): No Vulkan instance or surface" << std::endl;
-            return false;
-        }
-
-        const VkInstance& instance = s_Instance.value();
-
         uint32_t deviceCount = 0;
-        vkEnumeratePhysicalDevices(instance, &deviceCount, nullptr);
+        vkEnumeratePhysicalDevices(s_Instance, &deviceCount, nullptr);
         if (deviceCount == 0)
         {
             std::cout << "PB::Renderer::VulkanManager::PickPhysicalDevice(): No GPU with Vulkan support" << std::endl;
@@ -146,7 +151,7 @@ namespace PB::Renderer
         }
 
         std::vector<VkPhysicalDevice> devices(deviceCount);
-        vkEnumeratePhysicalDevices(instance, &deviceCount, devices.data());
+        vkEnumeratePhysicalDevices(s_Instance, &deviceCount, devices.data());
 
         for (const auto& device : devices)
         {
@@ -170,7 +175,6 @@ namespace PB::Renderer
 
     bool VulkanManager::IsDeviceSuitable(const VkPhysicalDevice& device)
     {
-        const VkSurfaceKHR& surface = s_Surface.value();
         const QueueFamilyIndices indices = FindQueueFamilies(device);
 
         if (const bool extensionsSupported = CheckDeviceExtensionSupport(device); !extensionsSupported)
@@ -179,9 +183,9 @@ namespace PB::Renderer
         VkSurfaceCapabilitiesKHR capabilities;
         uint32_t formatCount, presentCount;
 
-        vkGetPhysicalDeviceSurfaceCapabilitiesKHR(device, surface, &capabilities);
+        vkGetPhysicalDeviceSurfaceCapabilitiesKHR(device, s_Surface, &capabilities);
-        vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, nullptr);
+        vkGetPhysicalDeviceSurfaceFormatsKHR(device, s_Surface, &formatCount, nullptr);
-        vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentCount, nullptr);
+        vkGetPhysicalDeviceSurfacePresentModesKHR(device, s_Surface, &presentCount, nullptr);
         const bool swapChainAdequate = formatCount > 0 && presentCount > 0;
 
         VkPhysicalDeviceProperties deviceProperties;
@@ -193,7 +197,6 @@ namespace PB::Renderer
 
     QueueFamilyIndices VulkanManager::FindQueueFamilies(const VkPhysicalDevice& device)
     {
-        const VkSurfaceKHR& surface = s_Surface.value();
         QueueFamilyIndices indices;
 
         uint32_t queueFamilyCount;
@@ -210,7 +213,7 @@ namespace PB::Renderer
             }
 
             VkBool32 presentSupport = false;
-            vkGetPhysicalDeviceSurfaceSupportKHR(device, index, surface, &presentSupport);
+            vkGetPhysicalDeviceSurfaceSupportKHR(device, index, s_Surface, &presentSupport);
             if (presentSupport)
             {
                 indices.presentFamily = index;
@@ -251,8 +254,8 @@ namespace PB::Renderer
     {
         std::set uniqueQueueFamilies =
         {
-            s_QueueIndices.graphicsFamily.value(),
+            s_QueueIndices.graphicsFamily,
-            s_QueueIndices.presentFamily.value()
+            s_QueueIndices.presentFamily
         };
 
         std::vector<VkDeviceQueueCreateInfo> queueCreateInfos;
@@ -288,8 +291,8 @@ namespace PB::Renderer
             return false;
         }
 
-        vkGetDeviceQueue(s_Device, s_QueueIndices.graphicsFamily.value(), 0, &s_GraphicsQueue);
+        vkGetDeviceQueue(s_Device, s_QueueIndices.graphicsFamily, 0, &s_GraphicsQueue);
-        vkGetDeviceQueue(s_Device, s_QueueIndices.presentFamily.value(), 0, &s_PresentQueue);
+        vkGetDeviceQueue(s_Device, s_QueueIndices.presentFamily, 0, &s_PresentQueue);
 
         return true;
     }
@@ -308,7 +311,7 @@ namespace PB::Renderer
 
         VkSwapchainCreateInfoKHR createInfo{};
         createInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
-        createInfo.surface = s_Surface.value();
+        createInfo.surface = s_Surface;
 
         createInfo.minImageCount = imageCount;
         createInfo.imageFormat = format;
@@ -319,11 +322,11 @@ namespace PB::Renderer
 
         const uint32_t queueFamilyIndices[] =
         {
-            s_QueueIndices.graphicsFamily.value(),
+            s_QueueIndices.graphicsFamily,
-            s_QueueIndices.presentFamily.value()
+            s_QueueIndices.presentFamily
         };
 
-        if (s_QueueIndices.graphicsFamily.value() != s_QueueIndices.presentFamily.value())
+        if (s_QueueIndices.graphicsFamily != s_QueueIndices.presentFamily)
         {
             createInfo.imageSharingMode = VK_SHARING_MODE_CONCURRENT;
             createInfo.queueFamilyIndexCount = 2;
@@ -361,18 +364,17 @@ namespace PB::Renderer
     SwapChainSupportDetails VulkanManager::QuerySwapChainSupport()
     {
         SwapChainSupportDetails details;
-        const VkSurfaceKHR& surface = s_Surface.value();
+        vkGetPhysicalDeviceSurfaceCapabilitiesKHR(s_PhysicalDevice, s_Surface, &details.capabilities);
-        vkGetPhysicalDeviceSurfaceCapabilitiesKHR(s_PhysicalDevice, surface, &details.capabilities);
 
         uint32_t formatCount;
-        vkGetPhysicalDeviceSurfaceFormatsKHR(s_PhysicalDevice, surface, &formatCount, nullptr);
+        vkGetPhysicalDeviceSurfaceFormatsKHR(s_PhysicalDevice, s_Surface, &formatCount, nullptr);
         details.formats.resize(formatCount);
-        vkGetPhysicalDeviceSurfaceFormatsKHR(s_PhysicalDevice, surface, &formatCount, details.formats.data());
+        vkGetPhysicalDeviceSurfaceFormatsKHR(s_PhysicalDevice, s_Surface, &formatCount, details.formats.data());
 
         uint32_t presentModeCount;
-        vkGetPhysicalDeviceSurfacePresentModesKHR(s_PhysicalDevice, surface, &presentModeCount, nullptr);
+        vkGetPhysicalDeviceSurfacePresentModesKHR(s_PhysicalDevice, s_Surface, &presentModeCount, nullptr);
         details.presentModes.resize(presentModeCount);
-        vkGetPhysicalDeviceSurfacePresentModesKHR(s_PhysicalDevice, surface, &presentModeCount, details.presentModes.data());
+        vkGetPhysicalDeviceSurfacePresentModesKHR(s_PhysicalDevice, s_Surface, &presentModeCount, details.presentModes.data());
 
         return details;
     }
@@ -679,7 +681,7 @@ namespace PB::Renderer
         VkCommandPoolCreateInfo poolInfo{};
         poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
         poolInfo.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
-        poolInfo.queueFamilyIndex = s_QueueIndices.graphicsFamily.value();
+        poolInfo.queueFamilyIndex = s_QueueIndices.graphicsFamily;
 
         if (vkCreateCommandPool(s_Device, &poolInfo, nullptr, &s_CommandPool) != VK_SUCCESS)
         {
@@ -737,12 +739,23 @@ namespace PB::Renderer
         return true;
     }
 
-    void VulkanManager::CreateSemaphores()
+    bool VulkanManager::CreateSemaphores()
     {
         VkSemaphoreCreateInfo createInfo{};
         createInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
 
-        vkCreateSemaphore(s_Device, &createInfo, nullptr, &s_ImageAvailableSemaphore);
+        if (vkCreateSemaphore(s_Device, &createInfo, nullptr, &s_ImageAvailableSemaphore) != VK_SUCCESS)
-        vkCreateSemaphore(s_Device, &createInfo, nullptr, &s_RenderFinishedSemaphore);
+        {
+            std::cout << "PB::Renderer::VulkanManager::CreateSemaphores(): Could not create semaphore" << std::endl;
+            return false;
+        }
+
+        if (vkCreateSemaphore(s_Device, &createInfo, nullptr, &s_RenderFinishedSemaphore) != VK_SUCCESS)
+        {
+            std::cout << "PB::Renderer::VulkanManager::CreateSemaphores(): Could not create semaphore" << std::endl;
+            return false;
+        }
+
+        return true;
     }
 }