private static VulkanPlatformInterface TryCreate()
{
_options = AvaloniaLocator.Current.GetService <VulkanOptions>() ?? new VulkanOptions();
var instance = VulkanInstance.Create(_options);
return(new VulkanPlatformInterface(instance));
}
internal static unsafe VulkanInstance Create(VulkanOptions options)
{
var api = Vk.GetApi();
var applicationName = Marshal.StringToHGlobalAnsi(options.ApplicationName);
var engineName = Marshal.StringToHGlobalAnsi(EngineName);
var enabledExtensions = new List <string>(options.InstanceExtensions);
enabledExtensions.AddRange(RequiredInstanceExtensions);
var applicationInfo = new ApplicationInfo
{
PApplicationName = (byte *)applicationName,
ApiVersion = Vk.Version12.Value,
PEngineName = (byte *)engineName,
EngineVersion = new Version32(1, 0, 0),
ApplicationVersion = new Version32(1, 0, 0)
};
var enabledLayers = new HashSet <string>();
if (options.UseDebug)
{
enabledExtensions.Add(ExtDebugUtils.ExtensionName);
enabledExtensions.Add(ExtDebugReport.ExtensionName);
if (IsLayerAvailable(api, "VK_LAYER_KHRONOS_validation"))
{
enabledLayers.Add("VK_LAYER_KHRONOS_validation");
}
}
foreach (var layer in options.EnabledLayers)
{
enabledLayers.Add(layer);
}
var ppEnabledExtensions = stackalloc IntPtr[enabledExtensions.Count];
var ppEnabledLayers = stackalloc IntPtr[enabledLayers.Count];
for (var i = 0; i < enabledExtensions.Count; i++)
{
ppEnabledExtensions[i] = Marshal.StringToHGlobalAnsi(enabledExtensions[i]);
}
var layers = enabledLayers.ToList();
for (var i = 0; i < enabledLayers.Count; i++)
{
ppEnabledLayers[i] = Marshal.StringToHGlobalAnsi(layers[i]);
}
var instanceCreateInfo = new InstanceCreateInfo
{
SType = StructureType.InstanceCreateInfo,
PApplicationInfo = &applicationInfo,
PpEnabledExtensionNames = (byte **)ppEnabledExtensions,
PpEnabledLayerNames = (byte **)ppEnabledLayers,
EnabledExtensionCount = (uint)enabledExtensions.Count,
EnabledLayerCount = (uint)enabledLayers.Count
};
api.CreateInstance(in instanceCreateInfo, null, out var instance).ThrowOnError();
Marshal.FreeHGlobal(applicationName);
Marshal.FreeHGlobal(engineName);
for (var i = 0; i < enabledExtensions.Count; i++)
{
Marshal.FreeHGlobal(ppEnabledExtensions[i]);
}
for (var i = 0; i < enabledLayers.Count; i++)
{
Marshal.FreeHGlobal(ppEnabledLayers[i]);
}
return(new VulkanInstance(instance, api));
}
