create logical device

main.cpp

@@ -30,24 +30,27 @@ private:
 
     glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
     glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
-    window = glfwCreateWindow(800, 600, "App", nullptr, nullptr);
+    mWindow = glfwCreateWindow(800, 600, "App", nullptr, nullptr);
   }
 
   void initVulkan() {
     createInstance();
     pickPhysicalDevice();
     findPhysicalDeviceQueueFamilies();
+    createLogicalDevice();
+    getQueues();
   }
 
   void mainLoop() {
-    while(!glfwWindowShouldClose(window)) {
+    while(!glfwWindowShouldClose(mWindow)) {
       glfwPollEvents();
     }
   }
 
   void cleanup() {
-    vkDestroyInstance(instance, nullptr);
-    glfwDestroyWindow(window);
+    vkDestroyDevice(mDevice, nullptr);
+    vkDestroyInstance(mInstance, nullptr);
+    glfwDestroyWindow(mWindow);
     glfwTerminate();
   }
 
@@ -78,7 +81,7 @@ private:
       .ppEnabledExtensionNames = glfwExtensions,
     };
 
-    if (vkCreateInstance(&createInfo, nullptr, &instance) != VK_SUCCESS) {
+    if (vkCreateInstance(&createInfo, nullptr, &mInstance) != VK_SUCCESS) {
       throw std::runtime_error("failed to create instance!");
     }
   }
@@ -107,23 +110,23 @@ private:
 
   void pickPhysicalDevice() {
     uint32_t deviceCount = 0;
-    vkEnumeratePhysicalDevices(instance, &deviceCount, nullptr);
+    vkEnumeratePhysicalDevices(mInstance, &deviceCount, nullptr);
 
     if (deviceCount == 0) {
       throw std::runtime_error("no gpu with vulkan support");
     }
 
     std::vector<VkPhysicalDevice> devices(deviceCount);
-    vkEnumeratePhysicalDevices(instance, &deviceCount, devices.data());
+    vkEnumeratePhysicalDevices(mInstance, &deviceCount, devices.data());
 
     for (const auto& device : devices) {
       if (isDeviceSuitable(device)) {
-        physicalDevice = device;
+        mPhysicalDevice = device;
         break;
       }
     }
 
-    if (!physicalDevice) throw std::runtime_error("no suitable gpu");
+    if (!mPhysicalDevice) throw std::runtime_error("no suitable gpu");
   }
 
   static bool isDeviceSuitable(VkPhysicalDevice device) {
@@ -141,15 +144,15 @@ private:
 
   void findPhysicalDeviceQueueFamilies() {
     uint32_t queuesCount = 0;
-    vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice, &queuesCount, nullptr);
+    vkGetPhysicalDeviceQueueFamilyProperties(mPhysicalDevice, &queuesCount, nullptr);
 
     std::vector<VkQueueFamilyProperties> queueFamilyProperties(queuesCount);
-    vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice, &queuesCount, queueFamilyProperties.data());
+    vkGetPhysicalDeviceQueueFamilyProperties(mPhysicalDevice, &queuesCount, queueFamilyProperties.data());
 
     int index = 0;
     for (const auto& familyProperty : queueFamilyProperties) {
       if (familyProperty.queueFlags & VK_QUEUE_GRAPHICS_BIT) {
-        graphicsQueueFamilyIndex = index;
+        mGraphicsQueueFamilyIndex = index;
       }
       index++;
     }
@@ -157,12 +160,42 @@ private:
     if (index == -1) throw std::runtime_error("nu require queue families found");
   }
 
-private:
-  GLFWwindow* window = nullptr;
+  void createLogicalDevice() {
+    float queuePriority = 1.f;
 
-  VkInstance instance = VK_NULL_HANDLE;
-  VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
-  uint32_t graphicsQueueFamilyIndex = -1;
+    VkDeviceQueueCreateInfo queueCreateInfos {
+      .sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO,
+      .queueFamilyIndex = mGraphicsQueueFamilyIndex,
+      .queueCount = 1,
+      .pQueuePriorities = &queuePriority,
+    };
+
+    VkPhysicalDeviceFeatures features {};
+
+    VkDeviceCreateInfo deviceCreateInfo {
+      .sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,
+      .queueCreateInfoCount = 1,
+      .pQueueCreateInfos = &queueCreateInfos,
+      .pEnabledFeatures = &features,
+    };
+
+    vkCreateDevice(mPhysicalDevice, &deviceCreateInfo, nullptr, &mDevice);
+
+    if (mDevice == VK_NULL_HANDLE) throw std::runtime_error("failed to create vulkan logical device");
+  }
+
+  void getQueues() {
+    vkGetDeviceQueue(mDevice, mGraphicsQueueFamilyIndex, 0, &mGraphicsQueue);
+  }
+
+private:
+  GLFWwindow* mWindow = nullptr;
+
+  VkInstance mInstance = VK_NULL_HANDLE;
+  VkPhysicalDevice mPhysicalDevice = VK_NULL_HANDLE;
+  uint32_t mGraphicsQueueFamilyIndex = -1;
+  VkDevice mDevice = VK_NULL_HANDLE;
+  VkQueue mGraphicsQueue = VK_NULL_HANDLE;
 };
 
 int main() {