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//
// PhysicalDevice.cs
//
// Author:
// Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
//
// Copyright (c) 2019 jp
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using Vulkan;
using static Vulkan.VulkanNative;
using static Vulkan.Utils;
using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
namespace VKE {
public class PhysicalDeviceCollection : IEnumerable<PhysicalDevice> {
VkInstance inst;
PhysicalDevice[] phys;
public PhysicalDeviceCollection (VkInstance instance) {
inst = instance;
init ();
}
public PhysicalDevice this[int i] {
get {
return phys[i];
}
}
public IEnumerator<PhysicalDevice> GetEnumerator () {
return ((IEnumerable<PhysicalDevice>)phys).GetEnumerator ();
}
IEnumerator IEnumerable.GetEnumerator () {
return ((IEnumerable<PhysicalDevice>)phys).GetEnumerator ();
}
unsafe void init () {
uint gpuCount = 0;
CheckResult (vkEnumeratePhysicalDevices (inst, ref gpuCount, IntPtr.Zero));
if (gpuCount <= 0)
throw new Exception ("No GPU found");
NativeList<VkPhysicalDevice> gpus = new NativeList<VkPhysicalDevice> (gpuCount, gpuCount);
//fixed (IntPtr* physicalDevices = gpus) {
CheckResult (vkEnumeratePhysicalDevices (inst, ref gpuCount, gpus.Data),
"Could not enumerate physical devices.");
//}
phys = new PhysicalDevice[gpuCount];
Console.WriteLine ("gpu count " + gpuCount);
for (int i = 0; i < gpuCount; i++)
phys[i] = new PhysicalDevice (gpus[i].Handle);
gpus.Dispose ();
}
}
public class PhysicalDevice {
IntPtr phy;
public VkPhysicalDeviceProperties deviceProperties { get; private set; }
public VkPhysicalDeviceFeatures deviceFeatures { get; private set; }
public VkPhysicalDeviceMemoryProperties memoryProperties { get; private set; }
public VkQueueFamilyProperties[] QueueFamilies { get; private set; }
public bool HasSwapChainSupport { get; private set; }
public IntPtr Handle => phy;
public PhysicalDevice (IntPtr vkPhy) {
phy = vkPhy;
init ();
}
unsafe void init () {
VkPhysicalDeviceProperties pdp;
vkGetPhysicalDeviceProperties (phy, out pdp);
deviceProperties = pdp;
VkPhysicalDeviceFeatures df;
vkGetPhysicalDeviceFeatures (phy, out df);
deviceFeatures = df;
// Gather physical Device memory properties
IntPtr tmp = Marshal.AllocHGlobal (Marshal.SizeOf<VkPhysicalDeviceMemoryProperties>());
vkGetPhysicalDeviceMemoryProperties (phy, tmp);
memoryProperties = Marshal.PtrToStructure<VkPhysicalDeviceMemoryProperties> (tmp);
uint queueFamilyCount = 0;
vkGetPhysicalDeviceQueueFamilyProperties (phy, ref queueFamilyCount, null);
QueueFamilies = new VkQueueFamilyProperties[queueFamilyCount];
if (queueFamilyCount <= 0)
throw new Exception ("No queues found for physical device");
vkGetPhysicalDeviceQueueFamilyProperties (phy, ref queueFamilyCount, QueueFamilies.Pin ());
QueueFamilies.Unpin ();
uint propCount = 0;
vkEnumerateDeviceExtensionProperties (phy, IntPtr.Zero, out propCount, null);
VkExtensionProperties[] extProps = new VkExtensionProperties[propCount];
vkEnumerateDeviceExtensionProperties (phy, IntPtr.Zero, out propCount, extProps.Pin ());
extProps.Unpin ();
for (int i = 0; i < extProps.Length; i++)
{
fixed (VkExtensionProperties* ep = extProps) {
IntPtr n = (IntPtr)ep[i].extensionName;
switch (Marshal.PtrToStringAnsi(n))
{
case "VK_KHR_swapchain":
HasSwapChainSupport = true;
break;
}
}
}
}
public bool GetPresentIsSupported (uint qFamilyIndex, VkSurfaceKHR surf) {
VkBool32 isSupported = false;
VulkanNative.vkGetPhysicalDeviceSurfaceSupportKHR (phy, qFamilyIndex, surf, out isSupported);
return isSupported;
}
public VkSurfaceCapabilitiesKHR GetSurfaceCapabilities (VkSurfaceKHR surf) {
VkSurfaceCapabilitiesKHR caps;
vkGetPhysicalDeviceSurfaceCapabilitiesKHR (phy, surf, out caps);
return caps;
}
unsafe public VkSurfaceFormatKHR[] GetSurfaceFormats (VkSurfaceKHR surf) {
uint count = 0;
vkGetPhysicalDeviceSurfaceFormatsKHR (phy, surf, ref count, IntPtr.Zero);
VkSurfaceFormatKHR[] formats = new VkSurfaceFormatKHR[count];
vkGetPhysicalDeviceSurfaceFormatsKHR (phy, surf, ref count, formats.Pin());
formats.Unpin ();
return formats;
}
unsafe public VkPresentModeKHR[] GetSurfacePresentModes (VkSurfaceKHR surf) {
uint count = 0;
vkGetPhysicalDeviceSurfacePresentModesKHR (phy, surf, ref count, IntPtr.Zero);
VkPresentModeKHR[] modes = new VkPresentModeKHR[count];
vkGetPhysicalDeviceSurfacePresentModesKHR (phy, surf, ref count, modes.Pin());
modes.Unpin ();
return modes;
}
public VkFormatProperties GetFormatProperties (VkFormat format) {
VkFormatProperties properties;
vkGetPhysicalDeviceFormatProperties (phy, format, out properties);
return properties;
}
}
}
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