1 files changed, 60 insertions, 0 deletions
diff --git a/vulkan/VulkanExtensionMethods.cs b/vulkan/VulkanExtensionMethods.cs
new file mode 100644
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+++ b/vulkan/VulkanExtensionMethods.cs
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+// Copyright (c) 2019-2021  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.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Runtime.InteropServices;
+
+using static Vulkan.Vk;
+using static Vulkan.Utils;
+
+namespace Vulkan {
+	public static class VulkanExtensionMethods {
+		#region instance
+		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;
+		}
+		#endregion
+		#region Physical device
+		public static VkQueueFamilyProperties[] GetQueueFamilyProperties (this VkPhysicalDevice phy) {
+			vkGetPhysicalDeviceQueueFamilyProperties (phy, out uint queueFamilyCount, IntPtr.Zero);
+			VkQueueFamilyProperties[] qFamProps = new VkQueueFamilyProperties[queueFamilyCount];
+			vkGetPhysicalDeviceQueueFamilyProperties (phy, out queueFamilyCount, qFamProps.Pin());
+			qFamProps.Unpin();
+			return qFamProps;
+		}
+		public static VkSurfaceFormatKHR [] GetSurfaceFormats (this VkPhysicalDevice phy, VkSurfaceKHR surf)
+		{
+			vkGetPhysicalDeviceSurfaceFormatsKHR (phy, surf, out uint count, IntPtr.Zero);
+			VkSurfaceFormatKHR [] formats = new VkSurfaceFormatKHR [count];
+			vkGetPhysicalDeviceSurfaceFormatsKHR (phy, surf, out count, formats.Pin ());
+			formats.Unpin ();
+			return formats;
+		}
+		public static VkPresentModeKHR[] GetSurfacePresentModes (this VkPhysicalDevice phy, VkSurfaceKHR surf) {
+			vkGetPhysicalDeviceSurfacePresentModesKHR (phy, surf, out uint count, IntPtr.Zero);
+			VkPresentModeKHR[] modes = new VkPresentModeKHR[count];
+			vkGetPhysicalDeviceSurfacePresentModesKHR (phy, surf, out count, modes.Pin ());
+			modes.Unpin ();
+			return modes;
+
+		}
+		#endregion
+	}
+}