Changeset 502bd0b in opengl-game for vulkan-game.cpp

Timestamp:

Sep 23, 2019, 2:02:47 AM (6 years ago)

Author:

Dmitry Portnoy <dmp1488@…>

Branches:

feature/imgui-sdl, master, points-test

Children:

91c89f7

Parents:

c1c2021

Message:

In vulkangame, add code to create a swap chain

File:

• vulkan-game.cpp (modified) (3 diffs)

vulkan-game.cpp

@@ -100 +100 @@
    pickPhysicalDevice(deviceExtensions);
    createLogicalDevice(validationLayers, deviceExtensions);
+   createSwapChain();
 }
 
@@ -177 +178 @@
 
 void VulkanGame::cleanupSwapChain() {
+   vkDestroySwapchainKHR(device, swapChain, nullptr);
 }
 
@@ -357 +359 @@
    vkGetDeviceQueue(device, indices.presentFamily.value(), 0, &presentQueue);
 }
+
+void VulkanGame::createSwapChain() {
+   SwapChainSupportDetails swapChainSupport = VulkanUtils::querySwapChainSupport(physicalDevice, surface);
+
+   VkSurfaceFormatKHR surfaceFormat = VulkanUtils::chooseSwapSurfaceFormat(swapChainSupport.formats);
+   VkPresentModeKHR presentMode = VulkanUtils::chooseSwapPresentMode(swapChainSupport.presentModes);
+   VkExtent2D extent = VulkanUtils::chooseSwapExtent(swapChainSupport.capabilities, gui->getWindowWidth(), gui->getWindowHeight());
+
+   uint32_t imageCount = swapChainSupport.capabilities.minImageCount + 1;
+   if (swapChainSupport.capabilities.maxImageCount > 0 && imageCount > swapChainSupport.capabilities.maxImageCount) {
+      imageCount = swapChainSupport.capabilities.maxImageCount;
+   }
+
+   VkSwapchainCreateInfoKHR createInfo = {};
+   createInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
+   createInfo.surface = surface;
+   createInfo.minImageCount = imageCount;
+   createInfo.imageFormat = surfaceFormat.format;
+   createInfo.imageColorSpace = surfaceFormat.colorSpace;
+   createInfo.imageExtent = extent;
+   createInfo.imageArrayLayers = 1;
+   createInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
+
+   QueueFamilyIndices indices = VulkanUtils::findQueueFamilies(physicalDevice, surface);
+   uint32_t queueFamilyIndices[] = { indices.graphicsFamily.value(), indices.presentFamily.value() };
+
+   if (indices.graphicsFamily != indices.presentFamily) {
+      createInfo.imageSharingMode = VK_SHARING_MODE_CONCURRENT;
+      createInfo.queueFamilyIndexCount = 2;
+      createInfo.pQueueFamilyIndices = queueFamilyIndices;
+   }
+   else {
+      createInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
+      createInfo.queueFamilyIndexCount = 0;
+      createInfo.pQueueFamilyIndices = nullptr;
+   }
+
+   createInfo.preTransform = swapChainSupport.capabilities.currentTransform;
+   createInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
+   createInfo.presentMode = presentMode;
+   createInfo.clipped = VK_TRUE;
+   createInfo.oldSwapchain = VK_NULL_HANDLE;
+
+   if (vkCreateSwapchainKHR(device, &createInfo, nullptr, &swapChain) != VK_SUCCESS) {
+      throw runtime_error("failed to create swap chain!");
+   }
+
+   vkGetSwapchainImagesKHR(device, swapChain, &imageCount, nullptr);
+   swapChainImages.resize(imageCount);
+   vkGetSwapchainImagesKHR(device, swapChain, &imageCount, swapChainImages.data());
+
+   swapChainImageFormat = surfaceFormat.format;
+   swapChainExtent = extent;
+}