Add choose GPU.

Core/Core/RenderEngine.cpp

@@ -2,9 +2,9 @@
 
 #include <stdexcept>
 #include <string>
+#include "Log/Log.h"
 
 #ifdef _DEBUG
-#include "Log/Log.h"
 #include <assert.h>
 #define VK_CHECK(res) assert(res == VK_SUCCESS)
 
@@ -42,9 +42,19 @@ std::vector<const char*> RenderEngine::get_required_extensions()
     return extensions;
 }
 
+bool RenderEngine::is_device_suitable(VkPhysicalDevice device)
+{
+    VkPhysicalDeviceProperties device_properties;
+    VkPhysicalDeviceFeatures device_features;
+    vkGetPhysicalDeviceProperties(device, &device_properties);
+    vkGetPhysicalDeviceFeatures(device, &device_features);
+    
+    return device_properties.deviceType == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU && device_features.geometryShader;
+}
+
 RenderEngine::RenderEngine(GLFWwindow* window) : window_(window)
 #ifdef _DEBUG
-, debug_messenger_(nullptr)
+                                                 , debug_messenger_(nullptr)
 #endif
 {
     {
@@ -89,13 +99,23 @@ RenderEngine::RenderEngine(GLFWwindow* window) : window_(window)
         uint32_t device_count = 0;
         std::vector<VkPhysicalDevice> devices;
         VK_CHECK(vkEnumeratePhysicalDevices(instance_, &device_count, nullptr));
+        devices.resize(device_count);
         VK_CHECK(vkEnumeratePhysicalDevices(instance_, &device_count, devices.data()));
 
         for (const auto& device : devices)
         {
-            VkPhysicalDeviceProperties device_properties;
-            vkGetPhysicalDeviceProperties(device, &device_properties);
+            if (is_device_suitable(device))
+            {
+                physical_device_ = device;
+                VkPhysicalDeviceProperties device_properties;
+                vkGetPhysicalDeviceProperties(physical_device_, &device_properties);
+                Log("Using device: " + std::string(device_properties.deviceName));
+                break;
+            }
         }
+
+        if (VK_NULL_HANDLE == physical_device_)
+            throw std::runtime_error("No suitable device found");
     }
 }