private void CreateLogicalDevice()
{
var indices = new QueueFamilyIndices(vkPhysicalDevice, vkSurface);
float priority = 1f;
var queueCreateInfos = stackalloc VkDeviceQueueCreateInfo[]
{
new VkDeviceQueueCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO,
queueFamilyIndex = (uint)indices.GraphicsFamily,
queueCount = 1,
pQueuePriorities = &priority,
}
};
int extensionsCount = 1;
IntPtr *extensionsToEnableArray = stackalloc IntPtr[extensionsCount];
for (int i = 0; i < extensionsCount; i++)
{
string extension = "VK_KHR_swapchain";
extensionsToEnableArray[i] = Marshal.StringToHGlobalAnsi(extension);
}
VkPhysicalDeviceFeatures deviceFeatures = new VkPhysicalDeviceFeatures();
var createInfo = new VkDeviceCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,
ppEnabledExtensionNames = (byte **)extensionsToEnableArray,
enabledExtensionCount = (uint)extensionsCount,
pQueueCreateInfos = queueCreateInfos,
queueCreateInfoCount = 1,
pEnabledFeatures = &deviceFeatures,
};
VkDevice newDevice;
var result = VulkanNative.vkCreateDevice(this.vkPhysicalDevice, &createInfo, null, &newDevice);
this.vkDevice = newDevice;
Helpers.CheckErrors(result);
for (int i = 0; i < extensionsCount; i++)
{
Marshal.FreeHGlobal(extensionsToEnableArray[i]);
}
VkQueue newGraphicsQueue;
VulkanNative.vkGetDeviceQueue(vkDevice, (uint)indices.GraphicsFamily, 0, &newGraphicsQueue);
this.vkGraphicsQueue = newGraphicsQueue;
VkQueue newPresentQueue;
VulkanNative.vkGetDeviceQueue(vkDevice, (uint)indices.PresentFamily, 0, &newPresentQueue);
this.vkPresentQueue = newPresentQueue;
}
public unsafe Device(VkPhysicalDevice physicalDevice)
{
_physicalDevice = physicalDevice;
//get physical device information
VulkanNative.vkGetPhysicalDeviceProperties(
_physicalDevice,
out _properties
);
VulkanNative.vkGetPhysicalDeviceMemoryProperties(
_physicalDevice,
out _memoryProperties
);
VulkanNative.vkGetPhysicalDeviceFeatures(
_physicalDevice,
out _features
);
//get family queue properties
uint familyQueuePropertiesCount;
VulkanNative.vkGetPhysicalDeviceQueueFamilyProperties(
_physicalDevice,
&familyQueuePropertiesCount,
null
);
var familyQueueProperties = new NativeList <VkQueueFamilyProperties>(
familyQueuePropertiesCount
);
familyQueueProperties.Count = familyQueuePropertiesCount;
VulkanNative.vkGetPhysicalDeviceQueueFamilyProperties(
_physicalDevice,
&familyQueuePropertiesCount,
(VkQueueFamilyProperties *)familyQueueProperties.Data.ToPointer()
);
//setup queue families
_queueFamilies = new List <QueueFamily>();
for (uint i = 0; i < familyQueuePropertiesCount; i++)
{
var familyQueueProperty = familyQueueProperties[i];
_queueFamilies.Add(new QueueFamily(
i,
familyQueueProperty.queueCount,
(QueueFamilyType)familyQueueProperty.queueFlags
));
}
//get queue create infos
var queueCreateInfos = new NativeList <VkDeviceQueueCreateInfo>(
familyQueuePropertiesCount
);
queueCreateInfos.Count = familyQueuePropertiesCount;
for (int i = 0; i < familyQueuePropertiesCount; i++)
{
queueCreateInfos[i] = _queueFamilies[i].QueueCreateInfo;
}
//enable extra device features
var enabledFeatures = new VkPhysicalDeviceFeatures()
{
samplerAnisotropy = true,
dualSrcBlend = true
};
//enable swapchain extension for window support
var enabledExtensions = new NativeList <IntPtr>();
enabledExtensions.Add(GraphicsApiConstants.VK_KHR_SWAPCHAIN_EXTENSION_NAME);
var deviceInfo = new VkDeviceCreateInfo
{
sType = VkStructureType.DeviceCreateInfo,
pEnabledFeatures = &enabledFeatures,
enabledExtensionCount = enabledExtensions.Count,
ppEnabledExtensionNames = (byte **)enabledExtensions.Data,
enabledLayerCount = 0,
ppEnabledLayerNames = null,
queueCreateInfoCount = queueCreateInfos.Count,
pQueueCreateInfos = (VkDeviceQueueCreateInfo *)queueCreateInfos.Data.ToPointer()
};
//setup device
VkDevice device;
if (VulkanNative.vkCreateDevice(
_physicalDevice,
&deviceInfo,
null,
&device
) != VkResult.Success)
{
throw new Exception("failed to initialize device");
}
_handle = device;
//setup device queues
foreach (var queueFamily in _queueFamilies)
{
queueFamily.GetQueuesFromDevice(this);
}
//calculate device score
_score = 0;
if (_properties.deviceType == VkPhysicalDeviceType.DiscreteGpu)
{
_score += 10;
}
else if (_properties.deviceType == VkPhysicalDeviceType.IntegratedGpu)
{
_score += 5;
}
else if (_properties.deviceType == VkPhysicalDeviceType.VirtualGpu)
{
_score += 3;
}
else if (_properties.deviceType == VkPhysicalDeviceType.Cpu)
{
_score += 1;
}
_score += (
//1073741824 = 1024 * 1024 * 1024
_properties.limits.maxMemoryAllocationCount / 1073741824.0f
);
}
private void CreateLogicalDevice()
{
QueueFamilyIndices indices = this.FindQueueFamilies(physicalDevice);
List <VkDeviceQueueCreateInfo> queueCreateInfos = new List <VkDeviceQueueCreateInfo>();
HashSet <uint> uniqueQueueFamilies = new HashSet <uint>()
{
indices.graphicsFamily.Value, indices.presentFamily.Value
};
float queuePriority = 1.0f;
foreach (uint queueFamily in uniqueQueueFamilies)
{
VkDeviceQueueCreateInfo queueCreateInfo = new VkDeviceQueueCreateInfo()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO,
queueFamilyIndex = queueFamily,
queueCount = 1,
pQueuePriorities = &queuePriority,
};
queueCreateInfos.Add(queueCreateInfo);
}
VkPhysicalDeviceFeatures deviceFeatures = default;
// Raytracing extensions
VkPhysicalDeviceRayTracingFeaturesKHR deviceRayTracingFeatures = new VkPhysicalDeviceRayTracingFeaturesKHR()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_FEATURES_KHR,
pNext = null,
rayTracing = true,
};
VkPhysicalDeviceVulkan12Features deviceVulkan12Features = new VkPhysicalDeviceVulkan12Features()
{
sType = VkStructureType.VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_VULKAN_1_2_FEATURES,
pNext = &deviceRayTracingFeatures,
bufferDeviceAddress = true,
};
int deviceExtensionsCount = deviceExtensions.Length;
IntPtr *deviceExtensionsArray = stackalloc IntPtr[deviceExtensionsCount];
for (int i = 0; i < deviceExtensionsCount; i++)
{
string extension = deviceExtensions[i];
deviceExtensionsArray[i] = Marshal.StringToHGlobalAnsi(extension);
}
VkDeviceCreateInfo createInfo = new VkDeviceCreateInfo();
createInfo.sType = VkStructureType.VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
createInfo.pNext = &deviceVulkan12Features;
VkDeviceQueueCreateInfo[] queueCreateInfosArray = queueCreateInfos.ToArray();
fixed(VkDeviceQueueCreateInfo *queueCreateInfosArrayPtr = &queueCreateInfosArray[0])
{
createInfo.queueCreateInfoCount = (uint)queueCreateInfos.Count;
createInfo.pQueueCreateInfos = queueCreateInfosArrayPtr;
}
createInfo.pEnabledFeatures = &deviceFeatures;
createInfo.enabledExtensionCount = (uint)deviceExtensions.Length;
createInfo.ppEnabledExtensionNames = (byte **)deviceExtensionsArray;
fixed(VkDevice *devicePtr = &device)
{
Helpers.CheckErrors(VulkanNative.vkCreateDevice(physicalDevice, &createInfo, null, devicePtr));
}
fixed(VkQueue *graphicsQueuePtr = &graphicsQueue)
{
VulkanNative.vkGetDeviceQueue(device, indices.graphicsFamily.Value, 0, graphicsQueuePtr);
}
fixed(VkQueue *presentQueuePtr = &presentQueue)
{
VulkanNative.vkGetDeviceQueue(device, indices.presentFamily.Value, 0, presentQueuePtr); // TODO queue index 0 ?¿?¿
}
}
