unsafe void init()
{
// 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, out queueFamilyCount, IntPtr.Zero);
QueueFamilies = new VkQueueFamilyProperties[queueFamilyCount];
if (queueFamilyCount <= 0)
{
throw new Exception("No queues found for physical device");
}
vkGetPhysicalDeviceQueueFamilyProperties(phy, out queueFamilyCount, QueueFamilies.Pin());
QueueFamilies.Unpin();
uint propCount = 0;
vkEnumerateDeviceExtensionProperties(phy, IntPtr.Zero, out propCount, IntPtr.Zero);
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;
}
}
}
}
internal PhysicalDevice(IntPtr vkPhy)
{
phy = vkPhy;
// Gather physical Device memory properties
IntPtr tmp = Marshal.AllocHGlobal(Marshal.SizeOf <VkPhysicalDeviceMemoryProperties> ());
vkGetPhysicalDeviceMemoryProperties(phy, tmp);
memoryProperties = Marshal.PtrToStructure <VkPhysicalDeviceMemoryProperties> (tmp);
Marshal.FreeHGlobal(tmp);
vkGetPhysicalDeviceQueueFamilyProperties(phy, out uint queueFamilyCount, IntPtr.Zero);
QueueFamilies = new VkQueueFamilyProperties [queueFamilyCount];
if (queueFamilyCount <= 0)
{
throw new Exception("No queues found for physical device");
}
vkGetPhysicalDeviceQueueFamilyProperties(phy, out queueFamilyCount, QueueFamilies.Pin());
QueueFamilies.Unpin();
HasSwapChainSupport = GetDeviceExtensionSupported(Ext.D.VK_KHR_swapchain);
}
static void Main(string[] args)
{
VkInstance inst;
using (VkApplicationInfo ai = new VkApplicationInfo()) {
using (VkInstanceCreateInfo ci = new VkInstanceCreateInfo {
pApplicationInfo = ai
}){
CheckResult(vkCreateInstance(ci, IntPtr.Zero, out inst));
}
}
Vk.LoadInstanceFunctionPointers(inst);
if (!TryGetPhysicalDevice(inst, VkPhysicalDeviceType.DiscreteGpu, out VkPhysicalDevice phy))
{
if (!TryGetPhysicalDevice(inst, VkPhysicalDeviceType.IntegratedGpu, out phy))
{
if (!TryGetPhysicalDevice(inst, VkPhysicalDeviceType.Cpu, out phy))
{
throw new Exception("no suitable physical device found");
}
}
}
foreach (VkPhysicalDeviceToolPropertiesEXT toolProp in GetToolProperties(phy))
{
Console.ForegroundColor = ConsoleColor.DarkYellow;
Console.WriteLine($"Enabled Tool: {toolProp.name}({toolProp.version})");
Console.ResetColor();
}
vkGetPhysicalDeviceQueueFamilyProperties(phy, out uint queueFamilyCount, IntPtr.Zero);
VkQueueFamilyProperties[] qFamProps = new VkQueueFamilyProperties[queueFamilyCount];
vkGetPhysicalDeviceQueueFamilyProperties(phy, out queueFamilyCount, qFamProps.Pin());
qFamProps.Unpin();
Console.WriteLine($"Queues:");
for (int i = 0; i < queueFamilyCount; i++)
{
Console.WriteLine($"\t{i}: {qFamProps[i].queueFlags,-60} ({qFamProps[i].queueCount})");
}
uint qFamIndex = (uint)qFamProps.Select((qFam, index) => (qFam, index))
.First(qfp => qfp.qFam.queueFlags.HasFlag(VkQueueFlags.Graphics)).index;
VkDevice dev = default;
float[] priorities = { 0 };
using (VkDeviceQueueCreateInfo qInfo = new VkDeviceQueueCreateInfo(qFamIndex, 1, priorities)) {
using (VkDeviceCreateInfo deviceCreateInfo = new VkDeviceCreateInfo()
{
pQueueCreateInfos = qInfo
}) {
CheckResult(vkCreateDevice(phy, deviceCreateInfo, IntPtr.Zero, out dev));
}
}
vkGetDeviceQueue(dev, qFamIndex, 0, out VkQueue gQ);
vkDestroyDevice(dev, IntPtr.Zero);
vkDestroyInstance(inst, IntPtr.Zero);
}