private void createLogicalDevice()
{
QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
List <VkDeviceQueueCreateInfo> queueCreateInfos = new List <VkDeviceQueueCreateInfo>();
HashSet <int> uniqueQueueFamilies = new HashSet <int>()
{
indices.graphicsFamily, indices.presentFamily
};
float[] queuePriorities = new float[] { 1.0f };
foreach (var queueFamily in uniqueQueueFamilies)
{
VkDeviceQueueCreateInfo queueCreateInfo = new VkDeviceQueueCreateInfo();
queueCreateInfo.sType = VkStructureType.VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
queueCreateInfo.queueFamilyIndex = queueFamily;
queueCreateInfo.queueCount = 1;
queueCreateInfo.pQueuePriorities = queuePriorities;
queueCreateInfos.Add(queueCreateInfo);
}
VkPhysicalDeviceFeatures deviceFeatures = new VkPhysicalDeviceFeatures();
VkDeviceCreateInfo createInfo = new VkDeviceCreateInfo();
createInfo.sType = VkStructureType.VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
createInfo.queueCreateInfoCount = queueCreateInfos.Count;
createInfo.pQueueCreateInfos = queueCreateInfos.ToArray();
createInfo.pEnabledFeatures = new VkPhysicalDeviceFeatures[] { deviceFeatures };
createInfo.enabledExtensionCount = deviceExtensions.Length;
createInfo.ppEnabledExtensionNames = deviceExtensions;
if (enableValidationLayers)
{
createInfo.enabledLayerCount = validationLayers.Length;
createInfo.ppEnabledLayerNames = validationLayers;
}
else
{
createInfo.enabledLayerCount = 0;
}
VkResult result = Vulkan.vkCreateDevice(physicalDevice, createInfo, null, out device);
if (result != VkResult.VK_SUCCESS)
{
throw Program.Throw("failed to create logical device!", result);
}
Vulkan.vkGetDeviceQueue(device, indices.graphicsFamily, 0, out graphicsQueue);
Vulkan.vkGetDeviceQueue(device, indices.presentFamily, 0, out presentQueue);
}
private void createCommandPool()
{
QueueFamilyIndices queueFamilyIndices = findQueueFamilies(physicalDevice);
VkCommandPoolCreateInfo poolInfo = new VkCommandPoolCreateInfo();
poolInfo.sType = VkStructureType.VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
poolInfo.queueFamilyIndex = queueFamilyIndices.graphicsFamily;
VkResult result = Vulkan.vkCreateCommandPool(device, poolInfo, null, out commandPool);
if (result != VkResult.VK_SUCCESS)
{
throw Program.Throw("failed to create command pool!", result);
}
}
private bool isDeviceSuitable(VkPhysicalDevice physicalDevice)
{
QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
bool extensionsSupported = checkDeviceExtensionsSupport(physicalDevice);
bool swapChainAdequate = false;
if (extensionsSupported)
{
SwapChainSupportDetails swapChainSupport = querySwapChainSupport(physicalDevice);
swapChainAdequate = swapChainSupport.formats.Any() && swapChainSupport.presentModes.Any();
}
return(indices.isComplete() && extensionsSupported && swapChainAdequate);
}
private QueueFamilyIndices findQueueFamilies(VkPhysicalDevice device)
{
QueueFamilyIndices indices = new QueueFamilyIndices();
int queueFamilyCount = 0;
Vulkan.vkGetPhysicalDeviceQueueFamilyProperties(device, ref queueFamilyCount, null);
VkQueueFamilyProperties[] queueFamilies = new VkQueueFamilyProperties[queueFamilyCount];
Vulkan.vkGetPhysicalDeviceQueueFamilyProperties(device, ref queueFamilyCount, queueFamilies);
int i = 0;
foreach (var queueFamily in queueFamilies)
{
if (queueFamily.queueCount > 0 && (queueFamily.queueFlags & VkQueueFlagBits.VK_QUEUE_GRAPHICS_BIT) > 0)
{
indices.graphicsFamily = i;
}
bool presentSupport = false;
Vulkan.vkGetPhysicalDeviceSurfaceSupportKHR(device, i, surface, out presentSupport);
if (queueFamily.queueCount > 0 && presentSupport)
{
indices.presentFamily = i;
}
if (indices.isComplete())
{
break;
}
i++;
}
return(indices);
}
private void createSwapChain()
{
SwapChainSupportDetails swapChainSupport = querySwapChainSupport(physicalDevice);
VkSurfaceFormatKHR surfaceFormat = chooseSwapSurfaceFormat(swapChainSupport.formats);
VkPresentModeKHR presentMode = chooseSwapPresentMode(swapChainSupport.presentModes);
VkExtent2D extent = chooseSwapExtent(swapChainSupport.capabilities);
int imageCount = swapChainSupport.capabilities.minImageCount + 1;
if (swapChainSupport.capabilities.maxImageCount > 0 && imageCount > swapChainSupport.capabilities.maxImageCount)
{
imageCount = swapChainSupport.capabilities.maxImageCount;
}
VkSwapchainCreateInfoKHR createInfo = new VkSwapchainCreateInfoKHR();
createInfo.sType = VkStructureType.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 = VkImageUsageFlags.VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
var queueFamilyIndices = new List <int>()
{
indices.graphicsFamily, indices.presentFamily
};
if (indices.graphicsFamily != indices.presentFamily)
{
createInfo.imageSharingMode = VkSharingMode.VK_SHARING_MODE_CONCURRENT;
createInfo.queueFamilyIndexCount = queueFamilyIndices.Count;
createInfo.pQueueFamilyIndices = queueFamilyIndices.ToArray();
}
else
{
createInfo.imageSharingMode = VkSharingMode.VK_SHARING_MODE_EXCLUSIVE;
}
createInfo.preTransform = (VkSurfaceTransformFlagBitsKHR)swapChainSupport.capabilities.currentTransform;
createInfo.compositeAlpha = VkCompositeAlphaFlagBitsKHR.VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
createInfo.presentMode = presentMode;
createInfo.clipped = VkBool32.VK_TRUE;
createInfo.oldSwapchain = null;
VkResult result = Vulkan.vkCreateSwapchainKHR(device, createInfo, null, out swapChain);
if (result != VkResult.VK_SUCCESS)
{
throw Program.Throw("failed to create swap chain!", result);
}
swapChainImages = new VkImage[imageCount];
Vulkan.vkGetSwapchainImagesKHR(device, swapChain, ref imageCount, swapChainImages);
swapChainImageFormat = surfaceFormat.format;
swapChainExtent = extent;
}