Add Vulkan swapchain creation

include/platform.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#include <vector>
+
+namespace platform {
+    std::vector<const char*> getRequiredExtensions();
+}

include/renderer.h

@@ -2,11 +2,23 @@
 
 #include <vulkan/vulkan.h>
 
+struct RenderTarget {
+    VkSurfaceKHR surface = nullptr;
+    VkSwapchainKHR swapchain = nullptr;
+};
+
 class Renderer {
 public:
     Renderer();
     ~Renderer();
     
+    RenderTarget* createSurfaceRenderTarget(VkSurfaceKHR surface);
+    void destroyRenderTarget(RenderTarget* target);
+    
+    VkInstance getInstance() const {
+        return instance_;
+    }
+    
 private:
     void createInstance();
 #ifdef DEBUG
@@ -25,6 +37,12 @@ private:
     VkDebugUtilsMessengerEXT messenger_ = nullptr;
 #endif
     
+    VkPhysicalDevice physicalDevice_ = nullptr;
     VkDevice device_ = nullptr;
+
+    struct {
+        uint32_t graphics = 0, presentation = 0;
+    } queueIndices;
+
     VkQueue graphicsQueue_ = nullptr;
 };

src/main.cpp

@@ -1,14 +1,33 @@
 #include <SDL.h>
+#include <SDL_vulkan.h>
 
 #include "renderer.h"
+#include "platform.h"
+
+SDL_Window* window = nullptr;
+
+std::vector<const char*> platform::getRequiredExtensions() {
+    uint32_t count = 0;
+    SDL_Vulkan_GetInstanceExtensions(window, &count, nullptr);
+    
+    std::vector<const char*> names(count);
+    SDL_Vulkan_GetInstanceExtensions(window, &count, names.data());
+    
+    return names;
+}
 
 int main(int, char*[]) {
-    SDL_Window* window = SDL_CreateWindow("Graph", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, 0);
+    window = SDL_CreateWindow("Graph", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, SDL_WINDOW_VULKAN);
     if(!window)
         return -1;
     
     Renderer* renderer = new Renderer();
     
+    VkSurfaceKHR surface = nullptr;
+    SDL_Vulkan_CreateSurface(window, renderer->getInstance(), &surface);
+    
+    RenderTarget* target = renderer->createSurfaceRenderTarget(surface);
+    
     bool running = true;
     while(running) {
         SDL_Event event = {};
@@ -18,6 +37,8 @@ int main(int, char*[]) {
         }
     }
     
+    renderer->destroyRenderTarget(target);
+    
     delete renderer;
     
     SDL_DestroyWindow(window);

src/renderer.cpp

@@ -5,6 +5,8 @@
 #include <iostream>
 #include <cstring>
 
+#include "platform.h"
+
 Renderer::Renderer() {
     createInstance();
 #ifdef DEBUG
@@ -24,6 +26,48 @@ Renderer::~Renderer() {
     vkDestroyInstance(instance_, nullptr);
 }
 
+RenderTarget* Renderer::createSurfaceRenderTarget(VkSurfaceKHR surface) {
+    RenderTarget* target = new RenderTarget();
+    target->surface = surface;
+    
+    VkSurfaceCapabilitiesKHR surfaceCapabilities = {};
+    vkGetPhysicalDeviceSurfaceCapabilitiesKHR(physicalDevice_, surface, &surfaceCapabilities);
+    
+    uint32_t surfaceFormatCount = 0;
+    vkGetPhysicalDeviceSurfaceFormatsKHR(physicalDevice_, surface, &surfaceFormatCount, nullptr);
+    
+    VkSurfaceFormatKHR* surfaceFormats = new VkSurfaceFormatKHR[surfaceFormatCount];
+    vkGetPhysicalDeviceSurfaceFormatsKHR(physicalDevice_, surface, &surfaceFormatCount, surfaceFormats);
+    
+    VkBool32 supported = false;
+    vkGetPhysicalDeviceSurfaceSupportKHR(physicalDevice_, queueIndices.presentation, surface, &supported);
+    
+    VkSwapchainCreateInfoKHR swapchainCreateInfo = {};
+    swapchainCreateInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
+    swapchainCreateInfo.surface = surface;
+    swapchainCreateInfo.minImageCount = surfaceCapabilities.minImageCount;
+    swapchainCreateInfo.imageColorSpace = surfaceFormats[0].colorSpace;
+    swapchainCreateInfo.imageFormat = surfaceFormats[0].format;
+    swapchainCreateInfo.imageExtent = surfaceCapabilities.currentExtent;
+    swapchainCreateInfo.imageArrayLayers = 1;
+    swapchainCreateInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
+    swapchainCreateInfo.queueFamilyIndexCount = 1;
+    swapchainCreateInfo.pQueueFamilyIndices = &queueIndices.presentation;
+    swapchainCreateInfo.preTransform = surfaceCapabilities.currentTransform;
+    swapchainCreateInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
+    swapchainCreateInfo.presentMode = VK_PRESENT_MODE_FIFO_KHR;
+    swapchainCreateInfo.clipped = true;
+    
+    vkCreateSwapchainKHR(device_, &swapchainCreateInfo, nullptr, &target->swapchain);
+    
+    return target;
+}
+
+void Renderer::destroyRenderTarget(RenderTarget* target) {
+    vkDestroySwapchainKHR(device_, target->swapchain, nullptr);
+    vkDestroySurfaceKHR(instance_, target->surface, nullptr);
+}
+
 void Renderer::createInstance() {
     uint32_t layerCount = 0;
     vkEnumerateInstanceLayerProperties(&layerCount, nullptr);
@@ -59,6 +103,9 @@ void Renderer::createInstance() {
 
     delete[] availableExtensions;
     
+    auto requiredExtensions = platform::getRequiredExtensions();
+    enabledExtensions.insert(enabledExtensions.end(), requiredExtensions.begin(), requiredExtensions.end());
+
     VkInstanceCreateInfo instanceCreateInfo = {};
     instanceCreateInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
     instanceCreateInfo.enabledLayerCount = enabledLayers.size();
@@ -95,22 +142,20 @@ void Renderer::createLogicalDevice() {
     VkPhysicalDevice* physicalDevices = new VkPhysicalDevice[physicalDeviceCount];
     vkEnumeratePhysicalDevices(instance_, &physicalDeviceCount, physicalDevices);
         
-    VkPhysicalDevice physicalDevice = nullptr;
-    
     for(uint32_t i = 0; i < physicalDeviceCount; i++) {
         VkPhysicalDeviceProperties properties = {};
         vkGetPhysicalDeviceProperties(physicalDevices[i], &properties);
     
-        physicalDevice = physicalDevices[i];
+        physicalDevice_ = physicalDevices[i];
     }
     
     delete[] physicalDevices;
     
     uint32_t queueFamilyPropertiesCount = 0;
-    vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice, &queueFamilyPropertiesCount, nullptr);
+    vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice_, &queueFamilyPropertiesCount, nullptr);
     
     VkQueueFamilyProperties* queueFamilyProperties = new VkQueueFamilyProperties[queueFamilyPropertiesCount];
-    vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice, &queueFamilyPropertiesCount, queueFamilyProperties);
+    vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice_, &queueFamilyPropertiesCount, queueFamilyProperties);
     
     uint32_t graphicsFamilyIndex = 0;
     
@@ -135,12 +180,16 @@ void Renderer::createLogicalDevice() {
         deviceQueueCreateInfos.push_back(queueCreateInfo);
     }
     
+    const std::vector<const char*> enabledExtensions = {"VK_KHR_swapchain"};
+    
     VkDeviceCreateInfo deviceCreateInfo = {};
     deviceCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
     deviceCreateInfo.queueCreateInfoCount = deviceQueueCreateInfos.size();
     deviceCreateInfo.pQueueCreateInfos = deviceQueueCreateInfos.data();
+    deviceCreateInfo.enabledExtensionCount = enabledExtensions.size();
+    deviceCreateInfo.ppEnabledExtensionNames = enabledExtensions.data();
     
-    vkCreateDevice(physicalDevice, &deviceCreateInfo, nullptr, &device_);
+    vkCreateDevice(physicalDevice_, &deviceCreateInfo, nullptr, &device_);
     
     vkGetDeviceQueue(device_, graphicsFamilyIndex, 0, &graphicsQueue_);
 }