internal static IntPtr CopyStringArrays(List <IntPtr> allocatedItems, string[] array, out uint count)
{
if (array == null)
{
count = 0U;
return(IntPtr.Zero);
}
int noOfElements = array.Length;
var dest = IntPtr.Zero;
// EnabledLayerNames
if (noOfElements > 0)
{
var POINTER_SIZE = Marshal.SizeOf(typeof(IntPtr));
dest = Marshal.AllocHGlobal(POINTER_SIZE * noOfElements);
allocatedItems.Add(dest);
var names = new IntPtr[noOfElements];
for (int i = 0; i < noOfElements; ++i)
{
names[i] = VkInteropsUtility.NativeUtf8FromString(array[i]);
allocatedItems.Add(names[i]);
}
Marshal.Copy(names, 0, dest, noOfElements);
}
count = (uint)noOfElements;
return(dest);
}
static IntPtr CopySingleString(List <IntPtr> allocatedItems, string name)
{
if (!string.IsNullOrWhiteSpace(name))
{
var dest = VkInteropsUtility.NativeUtf8FromString(name);
allocatedItems.Add(dest);
return(dest);
}
else
{
return(IntPtr.Zero);
}
}
public Result EnumerateInstanceExtensionProperties(string layerName, out MgExtensionProperties[] pProperties)
{
var pLayerName = IntPtr.Zero;
try
{
if (!string.IsNullOrWhiteSpace(layerName))
{
pLayerName = VkInteropsUtility.NativeUtf8FromString(layerName);
}
UInt32 pPropertyCount = 0;
var first = Interops.vkEnumerateInstanceExtensionProperties(pLayerName, ref pPropertyCount, null);
if (first != Result.SUCCESS)
{
pProperties = null;
return(first);
}
var extensionProperties = new VkExtensionProperties[pPropertyCount];
var last = Interops.vkEnumerateInstanceExtensionProperties(pLayerName, ref pPropertyCount, extensionProperties);
pProperties = new MgExtensionProperties[pPropertyCount];
for (uint i = 0; i < pPropertyCount; ++i)
{
pProperties[i] = new MgExtensionProperties
{
ExtensionName = VkInteropsUtility.ByteArrayToTrimmedString(extensionProperties[i].extensionName),
SpecVersion = extensionProperties[i].specVersion,
};
}
return(last);
}
finally
{
if (pLayerName != IntPtr.Zero)
{
}
}
}