public static IntPtr GetDelegate(VkInstance inst, string name)
{
byte[] n = System.Text.Encoding.UTF8.GetBytes(name + '\0');
GCHandle hnd = GCHandle.Alloc(n, GCHandleType.Pinned);
IntPtr del = Vk.vkGetInstanceProcAddr(inst, hnd.AddrOfPinnedObject());
if (del == IntPtr.Zero)
{
System.Diagnostics.Debug.WriteLine("instance function pointer not found for " + name);
}
hnd.Free();
return(del);
}
/// <summary>
/// Returns global layer properties.
/// </summary>
/// <param name="instance"></param>
/// <returns></returns>
public static VkPhysicalDevice[] PhysicalDevices(this VkInstance instance)
{
VkPhysicalDevice[] result;
UInt32 count;
vkAPI.vkEnumeratePhysicalDevices(instance, &count, null).Check();
result = new VkPhysicalDevice[count];
if (count > 0)
{
fixed(VkPhysicalDevice *pointer = result)
{
vkAPI.vkEnumeratePhysicalDevices(instance, &count, pointer).Check();
}
}
return(result);
}
public static bool TryGetPhysicalDevice(this VkInstance inst, VkPhysicalDeviceType deviceType, out VkPhysicalDevice phy)
{
CheckResult(vkEnumeratePhysicalDevices(inst, out uint phyCount, IntPtr.Zero));
VkPhysicalDevice[] phys = new VkPhysicalDevice[phyCount];
CheckResult(vkEnumeratePhysicalDevices(inst, out phyCount, phys.Pin()));
for (int i = 0; i < phys.Length; i++)
{
phy = phys[i];
vkGetPhysicalDeviceProperties(phy, out VkPhysicalDeviceProperties props);
if (props.deviceType == deviceType)
{
return(true);
}
}
phy = default;
return(false);
}
