Changeset 90a424f in opengl-game for vulkan-game.cpp

Timestamp:

Sep 16, 2019, 7:04:53 PM (6 years ago)

Author:

Dmitry Portnoy <dmitry.portnoy@…>

Branches:

feature/imgui-sdl, master, points-test

Children:

fe5c3ba

Parents:

c6fec84

Message:

In vulkangame, add code to create a Vulkan surface and pick a physical device

File:

• vulkan-game.cpp (modified) (2 diffs)

vulkan-game.cpp

@@ -93 +93 @@
    createVulkanInstance(validationLayers);
    setupDebugMessenger();
+   createVulkanSurface();
+   pickPhysicalDevice();
 }
 
@@ -230 +232 @@
    return VK_FALSE;
 }
+
+void VulkanGame::createVulkanSurface() {
+   if (gui->createVulkanSurface(instance, &surface) == RTWO_ERROR) {
+      throw runtime_error("failed to create window surface!");
+   }
+}
+
+void VulkanGame::pickPhysicalDevice() {
+   uint32_t deviceCount = 0;
+   vkEnumeratePhysicalDevices(instance, &deviceCount, nullptr);
+
+   if (deviceCount == 0) {
+      throw runtime_error("failed to find GPUs with Vulkan support!");
+   }
+
+   vector<VkPhysicalDevice> devices(deviceCount);
+   vkEnumeratePhysicalDevices(instance, &deviceCount, devices.data());
+
+   cout << endl << "Graphics cards:" << endl;
+   for (const VkPhysicalDevice& device : devices) {
+      if (isDeviceSuitable(device)) {
+         physicalDevice = device;
+         break;
+      }
+   }
+   cout << endl;
+
+   if (physicalDevice == VK_NULL_HANDLE) {
+      throw runtime_error("failed to find a suitable GPU!");
+   }
+}
+
+bool VulkanGame::isDeviceSuitable(VkPhysicalDevice device) {
+   const vector<const char*> deviceExtensions = {
+      VK_KHR_SWAPCHAIN_EXTENSION_NAME
+   };
+
+   VkPhysicalDeviceProperties deviceProperties;
+   vkGetPhysicalDeviceProperties(device, &deviceProperties);
+
+   cout << "Device: " << deviceProperties.deviceName << endl;
+
+   QueueFamilyIndices indices = VulkanUtils::findQueueFamilies(device, surface);
+   bool extensionsSupported = VulkanUtils::checkDeviceExtensionSupport(device, deviceExtensions);
+   bool swapChainAdequate = false;
+
+   if (extensionsSupported) {
+      SwapChainSupportDetails swapChainSupport = VulkanUtils::querySwapChainSupport(device, surface);
+      swapChainAdequate = !swapChainSupport.formats.empty() && !swapChainSupport.presentModes.empty();
+   }
+
+   VkPhysicalDeviceFeatures supportedFeatures;
+   vkGetPhysicalDeviceFeatures(device, &supportedFeatures);
+
+   return indices.isComplete() && extensionsSupported && swapChainAdequate && supportedFeatures.samplerAnisotropy;
+}