private VkInstance CreateVulkanInstance()
{
NativeString name = App.Name;
NativeString engine = "Foster.Framework";
// create the App Info
var appInfo = new VkApplicationInfo
{
sType = VkStructureType.ApplicationInfo,
pApplicationName = name,
applicationVersion = VK.MAKE_VERSION(1, 0, 0),
pEngineName = engine,
engineVersion = VK.MAKE_VERSION(App.Version),
apiVersion = VK.MAKE_VERSION(1, 0, 0),
};
var createInfo = new VkInstanceCreateInfo
{
sType = VkStructureType.InstanceCreateInfo,
pApplicationInfo = &appInfo,
};
// required validation layers
using var validationLayerNames = new NativeStringArray(validationLayers);
if (HasValidationLayers)
{
createInfo.enabledLayerCount = validationLayerNames.Length;
createInfo.ppEnabledLayerNames = validationLayerNames;
}
// get the required Vulkan Extensions
var exts = System.GetVKExtensions();
if (HasValidationLayers)
{
exts.Add(VkConst.EXT_DEBUG_UTILS_EXTENSION_NAME);
}
using var extensions = new NativeStringArray(exts);
createInfo.enabledExtensionCount = extensions.Length;
createInfo.ppEnabledExtensionNames = extensions;
// create instance
var result = VK.CreateInstance(&createInfo, null, out var instance);
if (result != VkResult.Success)
{
throw new Exception($"Failed to create Vulkan Instance, {result}");
}
return(instance);
}
protected override void FirstWindowCreated()
{
VK = new VK(this);
// Debug Callback
if (HasValidationLayers)
{
DebugMessenger = CreateDebugMessenger((messageSeverity, messageTypes, pCallbackData, pUserData) =>
{
var message = VK.STRING(pCallbackData->pMessage);
if (messageSeverity.HasFlag(VkDebugUtilsMessageSeverityFlagsEXT.Error))
{
Log.Error(Name, message);
}
else if (messageSeverity.HasFlag(VkDebugUtilsMessageSeverityFlagsEXT.Warning))
{
Log.Warning(Name, message);
}
else
{
Log.Message(Name, message);
}
return(VkConst.FALSE);
});
}
// Pick a Physical Device
PhysicalDevice = PickPhysicalDevice();
// get the API version
{
VkPhysicalDeviceProperties properties;
VK.GetPhysicalDeviceProperties(PhysicalDevice, &properties);
ApiVersion = VK.UNMAKE_VERSION(properties.apiVersion);
int length = 0;
while (length < VkConst.MAX_PHYSICAL_DEVICE_NAME_SIZE && properties.deviceName[length] != 0)
{
length++;
}
DeviceName = Encoding.UTF8.GetString(properties.deviceName, length);
}
// Create the Device
{
TryGetQueueFamilyIndex(PhysicalDevice, VkQueueFlags.GraphicsBit, out uint graphicsFamilyIndex);
// Graphics Family Queue
var priority = 1.0f;
var queueCreateInfo = new VkDeviceQueueCreateInfo
{
sType = VkStructureType.DeviceQueueCreateInfo,
queueFamilyIndex = graphicsFamilyIndex,
queueCount = 1,
pQueuePriorities = &priority
};
// Device Features
var deviceFeatures = new VkPhysicalDeviceFeatures();
var createInfo = new VkDeviceCreateInfo
{
sType = VkStructureType.DeviceCreateInfo,
pQueueCreateInfos = &queueCreateInfo,
queueCreateInfoCount = 1,
pEnabledFeatures = &deviceFeatures,
};
// Device Extensions
using var deviceExtensionNames = new NativeStringArray(deviceExtensions);
createInfo.enabledExtensionCount = deviceExtensionNames.Length;
createInfo.ppEnabledExtensionNames = deviceExtensionNames;
var result = VK.CreateDevice(PhysicalDevice, &createInfo, null, out Device);
if (result != VkResult.Success)
{
throw new Exception($"Failed to create Vulkan Logical Device, {result}");
}
// Get the Graphics Queue
VK.GetDeviceQueue(Device, graphicsFamilyIndex, 0, out GraphicsQueue);
}
}
