private unsafe void CreateInstance(IVkSurface vkSurface, string[] requestedExtensions, string[]?validationLayers, out Instance instance)
{
nint applicationName = Info.ApplicationName.Marshal();
nint engineName = Info.EngineName.Marshal();
ApplicationInfo applicationInfo = new ApplicationInfo
{
SType = StructureType.ApplicationInfo,
PApplicationName = (byte *)applicationName,
ApplicationVersion = Info.ApplicationVersion,
PEngineName = (byte *)engineName,
EngineVersion = Info.EngineVersion,
ApiVersion = Info.APIVersion
};
string[] requiredExtensions = VKAPI.GetRequiredExtensions(vkSurface, requestedExtensions);
nint requiredExtensionsPointer = SilkMarshal.StringArrayToPtr(requiredExtensions);
nint enabledLayerNames = 0x0;
int enabledLayerCount = 0;
InstanceCreateInfo createInfo = new InstanceCreateInfo
{
SType = StructureType.InstanceCreateInfo,
PApplicationInfo = &applicationInfo,
PpEnabledExtensionNames = (byte **)requiredExtensionsPointer,
EnabledExtensionCount = (uint)requiredExtensions.Length,
PpEnabledLayerNames = (byte **)null !,
EnabledLayerCount = 0,
PNext = (void *)null !
};
if (validationLayers is not null)
{
VKAPI.VerifyValidationLayerSupport(VK, validationLayers);
enabledLayerNames = SilkMarshal.StringArrayToPtr(validationLayers);
enabledLayerCount = validationLayers.Length;
createInfo.PpEnabledLayerNames = (byte **)enabledLayerNames;
createInfo.EnabledLayerCount = (uint)enabledLayerCount;
}
Log.Information(string.Format(FormatHelper.DEFAULT_LOGGING, nameof(VulkanInstance), "allocating instance."));
Result result = VK.CreateInstance(&createInfo, (AllocationCallbacks *)null !, out instance);
if (result is not Result.Success)
{
throw new VulkanException(result, "Failed to create Vulkan instance.");
}
SilkMarshal.FreeString(applicationName);
SilkMarshal.FreeString(engineName);
SilkMarshal.FreeString(requiredExtensionsPointer);
if (enabledLayerNames is not 0x0 && enabledLayerCount is not 0)
{
SilkMarshal.FreeString(enabledLayerNames);
}
}
public unsafe VulkanInstance(Vk vk, IVkSurface vkSurface, VulkanInstanceInfo info, string[] requestedExtensions, string[]?validationLayers)
{
VK = vk;
Info = info;
CreateInstance(vkSurface, requestedExtensions, validationLayers, out _VKInstance);
SurfaceExtension = GetInstanceExtension <SurfaceExtension>();
Handle = _VKInstance.ToHandle();
Surface = vkSurface.Create(Handle, (AllocationCallbacks *)null !).ToSurface();
Log.Debug(string.Format(FormatHelper.DEFAULT_LOGGING, nameof(VulkanInstance), "Created."));
}
public static unsafe Instance CreateInstance(string[] instanceLayers, string[] instanceExtensions, IVkSurface windowSurface)
{
ApplicationInfo appInfo = new()
{
SType = StructureType.ApplicationInfo,
PApplicationName = (byte *)SilkMarshal.StringToPtr("SilkyNvg-Vulkan-Example"),
ApplicationVersion = Vk.MakeVersion(1, 0, 0),
PEngineName = (byte *)SilkMarshal.StringToPtr("SilkyNvg (Renderer: Vulkan)"),
EngineVersion = Vk.MakeVersion(1, 0, 0),
ApiVersion = Vk.Version12
};
byte **windowExtensionsPtr = windowSurface.GetRequiredExtensions(out uint windowExtensionCount);
byte **instanceExtensionsPtr = (byte **)SilkMarshal.StringArrayToPtr(instanceExtensions);
byte **extensions = stackalloc byte *[(int)windowExtensionCount + instanceExtensions.Length];
int i = 0;
for (; i < windowExtensionCount; i++)
{
extensions[i] = windowExtensionsPtr[i];
}
for (; i < windowExtensionCount + instanceExtensions.Length; i++)
{
extensions[i] = instanceExtensionsPtr[i];
}
CheckInstanceExtensionsPresent(extensions, (int)windowExtensionCount + instanceExtensions.Length);
CheckInstanceLayersPresent(instanceLayers);
byte **layers = (byte **)SilkMarshal.StringArrayToPtr(instanceLayers);
InstanceCreateInfo instanceCreateInfo = VkInit.InstanceCreateInfo(appInfo, layers,
(uint)instanceLayers.Length, extensions, windowExtensionCount);
AssertVulkan(Vk.CreateInstance(instanceCreateInfo, null, out Instance instance));
return(instance);
}