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// Copyright (c) 2019 Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
//
// This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
using System;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
using Vulkan;
using static Vulkan.Vk;
namespace Vulkan {
public static class Utils {
public static void CheckResult (VkResult result, string msg = "Call failed",
[CallerMemberName] string caller = null,
[CallerFilePath] string sourceFilePath = "",
[CallerLineNumber] int sourceLineNumber = 0) {
if (result != VkResult.Success)
throw new InvalidOperationException ($"[{sourceFilePath}:{sourceLineNumber}->{caller}]{msg}: {result}");
}
public static VkExtensionProperties[] GetAvailableInstanceExtensions (string layerName = null) {
using (Utf8StringPointer pLayerName = layerName) {
CheckResult (vkEnumerateInstanceExtensionProperties (pLayerName, out uint pCount, IntPtr.Zero));
VkExtensionProperties[] tmp = new VkExtensionProperties[pCount];
CheckResult (vkEnumerateInstanceExtensionProperties (pLayerName, out pCount, tmp.Pin()));
tmp.Unpin();
return tmp;
}
}
public static bool TryGetPhysicalDevice (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;
}
public static VkPhysicalDeviceToolProperties[] GetToolProperties (VkPhysicalDevice phy) {
CheckResult (vkGetPhysicalDeviceToolProperties (phy , out uint count, IntPtr.Zero));
int sizeStruct = Marshal.SizeOf<VkPhysicalDeviceToolProperties> ();
IntPtr ptrTools = Marshal.AllocHGlobal (sizeStruct * (int)count);
CheckResult (vkGetPhysicalDeviceToolProperties (phy , out count, ptrTools));
VkPhysicalDeviceToolProperties[] result = new VkPhysicalDeviceToolProperties[count];
IntPtr tmp = ptrTools;
for (int i = 0; i < count; i++) {
result[i] = Marshal.PtrToStructure<VkPhysicalDeviceToolProperties> (tmp);
tmp += sizeStruct;
}
Marshal.FreeHGlobal (ptrTools);
return result;
}
}
}
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