internal static DeviceInfo[] GetSuitablePhysicalDevices(Vk api)
{
var appName = Marshal.StringToHGlobalAnsi(AppName);
var applicationInfo = new ApplicationInfo
{
PApplicationName = (byte *)appName,
ApplicationVersion = 1,
PEngineName = (byte *)appName,
EngineVersion = 1,
ApiVersion = Vk.Version12.Value
};
var instanceCreateInfo = new InstanceCreateInfo
{
SType = StructureType.InstanceCreateInfo,
PApplicationInfo = &applicationInfo,
PpEnabledExtensionNames = null,
PpEnabledLayerNames = null,
EnabledExtensionCount = 0,
EnabledLayerCount = 0
};
api.CreateInstance(in instanceCreateInfo, null, out var instance).ThrowOnError();
Marshal.FreeHGlobal(appName);
uint physicalDeviceCount;
api.EnumeratePhysicalDevices(instance, &physicalDeviceCount, null).ThrowOnError();
PhysicalDevice[] physicalDevices = new PhysicalDevice[physicalDeviceCount];
fixed(PhysicalDevice *pPhysicalDevices = physicalDevices)
{
api.EnumeratePhysicalDevices(instance, &physicalDeviceCount, pPhysicalDevices).ThrowOnError();
}
DeviceInfo[] devices = new DeviceInfo[physicalDevices.Length];
for (int i = 0; i < physicalDevices.Length; i++)
{
var physicalDevice = physicalDevices[i];
api.GetPhysicalDeviceProperties(physicalDevice, out var properties);
devices[i] = new DeviceInfo(
StringFromIdPair(properties.VendorID, properties.DeviceID),
VendorUtils.GetNameFromId(properties.VendorID),
Marshal.PtrToStringAnsi((IntPtr)properties.DeviceName),
properties.DeviceType == PhysicalDeviceType.DiscreteGpu);
}
api.DestroyInstance(instance, null);
return(devices);
}
public static Device CreateDevice(Vk api, PhysicalDevice physicalDevice, uint queueFamilyIndex, string[] supportedExtensions, uint queueCount)
{
if (queueCount > QueuesCount)
{
queueCount = QueuesCount;
}
float *queuePriorities = stackalloc float[(int)queueCount];
for (int i = 0; i < queueCount; i++)
{
queuePriorities[i] = 1f;
}
var queueCreateInfo = new DeviceQueueCreateInfo()
{
SType = StructureType.DeviceQueueCreateInfo,
QueueFamilyIndex = queueFamilyIndex,
QueueCount = queueCount,
PQueuePriorities = queuePriorities
};
api.GetPhysicalDeviceProperties(physicalDevice, out var properties);
bool useRobustBufferAccess = VendorUtils.FromId(properties.VendorID) == Vendor.Nvidia;
var supportedFeatures = api.GetPhysicalDeviceFeature(physicalDevice);
var features = new PhysicalDeviceFeatures()
{
DepthBiasClamp = true,
DepthClamp = true,
DualSrcBlend = true,
FragmentStoresAndAtomics = true,
GeometryShader = true,
ImageCubeArray = true,
IndependentBlend = true,
LogicOp = true,
MultiViewport = true,
PipelineStatisticsQuery = true,
SamplerAnisotropy = true,
ShaderClipDistance = true,
ShaderFloat64 = supportedFeatures.ShaderFloat64,
ShaderImageGatherExtended = true,
// ShaderStorageImageReadWithoutFormat = true,
// ShaderStorageImageWriteWithoutFormat = true,
TessellationShader = true,
VertexPipelineStoresAndAtomics = true,
RobustBufferAccess = useRobustBufferAccess
};
void *pExtendedFeatures = null;
var featuresTransformFeedback = new PhysicalDeviceTransformFeedbackFeaturesEXT()
{
SType = StructureType.PhysicalDeviceTransformFeedbackFeaturesExt,
PNext = pExtendedFeatures,
TransformFeedback = true
};
pExtendedFeatures = &featuresTransformFeedback;
var featuresRobustness2 = new PhysicalDeviceRobustness2FeaturesEXT()
{
SType = StructureType.PhysicalDeviceRobustness2FeaturesExt,
PNext = pExtendedFeatures,
NullDescriptor = true
};
pExtendedFeatures = &featuresRobustness2;
var featuresExtendedDynamicState = new PhysicalDeviceExtendedDynamicStateFeaturesEXT()
{
SType = StructureType.PhysicalDeviceExtendedDynamicStateFeaturesExt,
PNext = pExtendedFeatures,
ExtendedDynamicState = supportedExtensions.Contains(ExtExtendedDynamicState.ExtensionName)
};
pExtendedFeatures = &featuresExtendedDynamicState;
var featuresVk11 = new PhysicalDeviceVulkan11Features()
{
SType = StructureType.PhysicalDeviceVulkan11Features,
PNext = pExtendedFeatures,
ShaderDrawParameters = true
};
pExtendedFeatures = &featuresVk11;
var featuresVk12 = new PhysicalDeviceVulkan12Features()
{
SType = StructureType.PhysicalDeviceVulkan12Features,
PNext = pExtendedFeatures,
DescriptorIndexing = supportedExtensions.Contains("VK_EXT_descriptor_indexing"),
DrawIndirectCount = supportedExtensions.Contains(KhrDrawIndirectCount.ExtensionName)
};
pExtendedFeatures = &featuresVk12;
PhysicalDeviceIndexTypeUint8FeaturesEXT featuresIndexU8;
if (supportedExtensions.Contains("VK_EXT_index_type_uint8"))
{
featuresIndexU8 = new PhysicalDeviceIndexTypeUint8FeaturesEXT()
{
SType = StructureType.PhysicalDeviceIndexTypeUint8FeaturesExt,
PNext = pExtendedFeatures,
IndexTypeUint8 = true
};
pExtendedFeatures = &featuresIndexU8;
}
PhysicalDeviceFragmentShaderInterlockFeaturesEXT featuresFragmentShaderInterlock;
if (supportedExtensions.Contains("VK_EXT_fragment_shader_interlock"))
{
featuresFragmentShaderInterlock = new PhysicalDeviceFragmentShaderInterlockFeaturesEXT()
{
SType = StructureType.PhysicalDeviceFragmentShaderInterlockFeaturesExt,
PNext = pExtendedFeatures,
FragmentShaderPixelInterlock = true
};
pExtendedFeatures = &featuresFragmentShaderInterlock;
}
PhysicalDeviceSubgroupSizeControlFeaturesEXT featuresSubgroupSizeControl;
if (supportedExtensions.Contains("VK_EXT_subgroup_size_control"))
{
featuresSubgroupSizeControl = new PhysicalDeviceSubgroupSizeControlFeaturesEXT()
{
SType = StructureType.PhysicalDeviceSubgroupSizeControlFeaturesExt,
PNext = pExtendedFeatures,
SubgroupSizeControl = true
};
pExtendedFeatures = &featuresSubgroupSizeControl;
}
var enabledExtensions = RequiredExtensions.Union(DesirableExtensions.Intersect(supportedExtensions)).ToArray();
IntPtr *ppEnabledExtensions = stackalloc IntPtr[enabledExtensions.Length];
for (int i = 0; i < enabledExtensions.Length; i++)
{
ppEnabledExtensions[i] = Marshal.StringToHGlobalAnsi(enabledExtensions[i]);
}
var deviceCreateInfo = new DeviceCreateInfo()
{
SType = StructureType.DeviceCreateInfo,
PNext = pExtendedFeatures,
QueueCreateInfoCount = 1,
PQueueCreateInfos = &queueCreateInfo,
PpEnabledExtensionNames = (byte **)ppEnabledExtensions,
EnabledExtensionCount = (uint)enabledExtensions.Length,
PEnabledFeatures = &features
};
api.CreateDevice(physicalDevice, in deviceCreateInfo, null, out var device).ThrowOnError();
for (int i = 0; i < enabledExtensions.Length; i++)
{
Marshal.FreeHGlobal(ppEnabledExtensions[i]);
}
return(device);
}