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using Ryujinx.Graphics.Vulkan;
using Silk.NET.Core;
using Silk.NET.Vulkan;
using Silk.NET.Vulkan.Extensions.KHR;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
namespace Ryujinx.Ava.Ui.Vulkan
{
public unsafe class VulkanPhysicalDevice
{
private VulkanPhysicalDevice(PhysicalDevice apiHandle, Vk api, uint queueCount, uint queueFamilyIndex)
{
InternalHandle = apiHandle;
Api = api;
QueueCount = queueCount;
QueueFamilyIndex = queueFamilyIndex;
api.GetPhysicalDeviceProperties(apiHandle, out var properties);
DeviceName = Marshal.PtrToStringAnsi((IntPtr)properties.DeviceName);
DeviceId = VulkanInitialization.StringFromIdPair(properties.VendorID, properties.DeviceID);
var version = (Version32)properties.ApiVersion;
ApiVersion = new Version((int)version.Major, (int)version.Minor, 0, (int)version.Patch);
}
internal PhysicalDevice InternalHandle { get; }
internal Vk Api { get; }
public uint QueueCount { get; }
public uint QueueFamilyIndex { get; }
public IntPtr Handle => InternalHandle.Handle;
public string DeviceName { get; }
public string DeviceId { get; }
public Version ApiVersion { get; }
public static Dictionary<PhysicalDevice, PhysicalDeviceProperties> PhysicalDevices { get; private set; }
public static IEnumerable<KeyValuePair<PhysicalDevice, PhysicalDeviceProperties>> SuitableDevices { get; private set; }
internal static void SelectAvailableDevices(VulkanInstance instance,
VulkanSurface surface, bool preferDiscreteGpu, string preferredDevice)
{
uint physicalDeviceCount;
instance.Api.EnumeratePhysicalDevices(instance.InternalHandle, &physicalDeviceCount, null).ThrowOnError();
var physicalDevices = new PhysicalDevice[physicalDeviceCount];
fixed (PhysicalDevice* pPhysicalDevices = physicalDevices)
{
instance.Api.EnumeratePhysicalDevices(instance.InternalHandle, &physicalDeviceCount, pPhysicalDevices)
.ThrowOnError();
}
PhysicalDevices = new Dictionary<PhysicalDevice, PhysicalDeviceProperties>();
foreach (var physicalDevice in physicalDevices)
{
instance.Api.GetPhysicalDeviceProperties(physicalDevice, out var properties);
PhysicalDevices.Add(physicalDevice, properties);
}
SuitableDevices = PhysicalDevices.Where(x => IsSuitableDevice(
instance.Api,
x.Key,
x.Value,
surface.ApiHandle,
out _,
out _));
}
internal static VulkanPhysicalDevice FindSuitablePhysicalDevice(VulkanInstance instance,
VulkanSurface surface, bool preferDiscreteGpu, string preferredDevice)
{
SelectAvailableDevices(instance, surface, preferDiscreteGpu, preferredDevice);
uint queueFamilyIndex = 0;
uint queueCount = 0;
if (!string.IsNullOrWhiteSpace(preferredDevice))
{
var physicalDevice = SuitableDevices.FirstOrDefault(x => VulkanInitialization.StringFromIdPair(x.Value.VendorID, x.Value.DeviceID) == preferredDevice);
queueFamilyIndex = FindSuitableQueueFamily(instance.Api, physicalDevice.Key,
surface.ApiHandle, out queueCount);
if (queueFamilyIndex != int.MaxValue)
{
return new VulkanPhysicalDevice(physicalDevice.Key, instance.Api, queueCount, queueFamilyIndex);
}
}
if (preferDiscreteGpu)
{
var discreteGpus = SuitableDevices.Where(p => p.Value.DeviceType == PhysicalDeviceType.DiscreteGpu);
foreach (var gpu in discreteGpus)
{
queueFamilyIndex = FindSuitableQueueFamily(instance.Api, gpu.Key,
surface.ApiHandle, out queueCount);
if (queueFamilyIndex != int.MaxValue)
{
return new VulkanPhysicalDevice(gpu.Key, instance.Api, queueCount, queueFamilyIndex);
}
}
}
foreach (var physicalDevice in SuitableDevices)
{
queueFamilyIndex = FindSuitableQueueFamily(instance.Api, physicalDevice.Key,
surface.ApiHandle, out queueCount);
if (queueFamilyIndex != int.MaxValue)
{
return new VulkanPhysicalDevice(physicalDevice.Key, instance.Api, queueCount, queueFamilyIndex);
}
}
throw new Exception("No suitable physical device found");
}
private static unsafe bool IsSuitableDevice(Vk api, PhysicalDevice physicalDevice, PhysicalDeviceProperties properties, SurfaceKHR surface,
out uint queueCount, out uint familyIndex)
{
queueCount = 0;
familyIndex = 0;
if (properties.DeviceType == PhysicalDeviceType.Cpu) return false;
var extensionMatches = 0;
uint propertiesCount;
api.EnumerateDeviceExtensionProperties(physicalDevice, (byte*)null, &propertiesCount, null).ThrowOnError();
var extensionProperties = new ExtensionProperties[propertiesCount];
fixed (ExtensionProperties* pExtensionProperties = extensionProperties)
{
api.EnumerateDeviceExtensionProperties(
physicalDevice,
(byte*)null,
&propertiesCount,
pExtensionProperties).ThrowOnError();
for (var i = 0; i < propertiesCount; i++)
{
var extensionName = Marshal.PtrToStringAnsi((IntPtr)pExtensionProperties[i].ExtensionName);
if (VulkanInitialization.RequiredExtensions.Contains(extensionName))
{
extensionMatches++;
}
}
}
if (extensionMatches == VulkanInitialization.RequiredExtensions.Length)
{
familyIndex = FindSuitableQueueFamily(api, physicalDevice, surface, out queueCount);
return familyIndex != uint.MaxValue;
}
return false;
}
internal unsafe string[] GetSupportedExtensions()
{
uint propertiesCount;
Api.EnumerateDeviceExtensionProperties(InternalHandle, (byte*)null, &propertiesCount, null).ThrowOnError();
var extensionProperties = new ExtensionProperties[propertiesCount];
fixed (ExtensionProperties* pExtensionProperties = extensionProperties)
{
Api.EnumerateDeviceExtensionProperties(InternalHandle, (byte*)null, &propertiesCount, pExtensionProperties)
.ThrowOnError();
}
return extensionProperties.Select(x => Marshal.PtrToStringAnsi((IntPtr)x.ExtensionName)).ToArray();
}
private static uint FindSuitableQueueFamily(Vk api, PhysicalDevice physicalDevice, SurfaceKHR surface,
out uint queueCount)
{
const QueueFlags RequiredFlags = QueueFlags.QueueGraphicsBit | QueueFlags.QueueComputeBit;
var khrSurface = new KhrSurface(api.Context);
uint propertiesCount;
api.GetPhysicalDeviceQueueFamilyProperties(physicalDevice, &propertiesCount, null);
var properties = new QueueFamilyProperties[propertiesCount];
fixed (QueueFamilyProperties* pProperties = properties)
{
api.GetPhysicalDeviceQueueFamilyProperties(physicalDevice, &propertiesCount, pProperties);
}
for (uint index = 0; index < propertiesCount; index++)
{
var queueFlags = properties[index].QueueFlags;
khrSurface.GetPhysicalDeviceSurfaceSupport(physicalDevice, index, surface, out var surfaceSupported)
.ThrowOnError();
if (queueFlags.HasFlag(RequiredFlags) && surfaceSupported)
{
queueCount = properties[index].QueueCount;
return index;
}
}
queueCount = 0;
return uint.MaxValue;
}
}
}
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