// Destroys the global vulkan objects
private void destroyGlobalVulkanObjects(Vk.Instance inst, VkExt.DebugReportCallbackExt debugReport, Vk.Device device)
{
device?.Dispose();
LINFO("Destroyed Vulkan device.");
if (debugReport != null)
{
debugReport.Dispose();
LINFO("Destroyed Vulkan debug report callback.");
}
inst.Dispose();
LINFO("Destroyed Vulkan instance.");
}
// Creates a VkInstance
private void createVulkanInstance(out Vk.Instance instance, out VkExt.DebugReportCallbackExt debugReport)
{
var appVersion = Application.AppParameters.Version;
var engVersion = Assembly.GetExecutingAssembly().GetName().Version;
// Build the app info
Vk.ApplicationInfo aInfo = new Vk.ApplicationInfo(
Application.AppParameters.Name,
appVersion.ToVkVersion(),
"Spectrum",
new Vk.Version(engVersion.Major, engVersion.Minor, engVersion.Revision),
new Vk.Version(1, 0, 0)
);
// Get available instance extensions, and ensure the required ones are present
var availExt = Vk.Instance.EnumerateExtensionProperties().Select(ext => ext.ExtensionName).ToArray();
List <string> reqExt = new List <string>();
reqExt.Add(Vk.Constant.InstanceExtension.KhrSurface);
switch (Platform.OS)
{
case PlatformOS.Windows: reqExt.Add(Vk.Constant.InstanceExtension.KhrWin32Surface); break;
case PlatformOS.Linux: reqExt.Add(Vk.Constant.InstanceExtension.KhrXlibSurface); break;
case PlatformOS.OSX: reqExt.Add(Vk.Constant.InstanceExtension.MvkMacOSSurface); break;
}
{
var missingExts = reqExt.FindAll(extName => !availExt.Contains(extName));
if (missingExts.Count > 0)
{
string msg = $"Required Vulkan extensions are missing: {String.Join(", ", missingExts)}";
LFATAL(msg);
throw new PlatformNotSupportedException(msg);
}
}
// Check for validation layers, if requested
bool hasDebug = false;
if (Application.AppParameters.EnableValidationLayers)
{
if (availExt.Contains(Vk.Constant.InstanceExtension.ExtDebugReport))
{
var availLay = Vk.Instance.EnumerateLayerProperties().Select(layer => layer.LayerName).ToArray();
hasDebug = availLay.Contains("VK_LAYER_KHRONOS_validation");
if (hasDebug)
{
reqExt.Add(Vk.Constant.InstanceExtension.ExtDebugReport);
}
else
{
LERROR("Application requested Vulkan validation layers, but the standard layers are not available.");
}
}
else
{
LERROR("Application requested Vulkan validation layers, but the debug report extension is not available.");
}
}
// Create the instance
Vk.InstanceCreateInfo iInfo = new Vk.InstanceCreateInfo(
aInfo,
hasDebug ? new[] { "VK_LAYER_KHRONOS_validation" } : null,
reqExt.ToArray(),
IntPtr.Zero
);
instance = new Vk.Instance(iInfo, null);
LINFO("Created Vulkan instance.");
// Create the debug callback if needed
debugReport = null;
if (hasDebug)
{
VkExt.DebugReportCallbackCreateInfoExt dbInfo = new VkExt.DebugReportCallbackCreateInfoExt(
(VkExt.DebugReportFlagsExt.PerformanceWarning | VkExt.DebugReportFlagsExt.Warning | VkExt.DebugReportFlagsExt.Error),
_DebugReportCallback,
IntPtr.Zero
);
debugReport = VkExt.InstanceExtensions.CreateDebugReportCallbackExt(instance, dbInfo, null);
LINFO("Created Vulkan debug report callback.");
}
}