/// <summary>
/// Create the minimum vulkan objects to quickly start a new application. The folowing objects are created:
/// - Vulkan Instance with extensions present in the `EnabledInstanceExtensions` property.
/// - Vulkan Surface for the GLFW native window.
/// - Vulkan device for the selected physical one with configured enabledFeatures and extensions present in `EnabledDeviceExtensions` list. Selection of the default physical device
/// may be replaced by the `selectPhysicalDevice` method override.
/// - Create a default Graphic Queue with presentable support. The default queue creation may be customized by overriding the `createQueues` method.
/// - Default vulkan Swapchain creation. Some swapchain's parameters are controled through static fields of the `SwapChain` class (ex: `SwapChain.PREFERED_FORMAT`).
/// - Create a default command pool for the `presentQueue` family index.
/// - Create an empty command buffer collection (`cmds`).
/// - Create one unsignaled vulkan semaphore (named `drawComplete` per swapchain image used to control presentation submission to the graphic queue.
/// - Create a signaled vulkan fence (`drawFence`). (TODO: improve this.
/// With all these objects, vulkan application programming startup is reduced to the minimal.
/// </summary>
protected virtual void initVulkan()
{
List <string> instExts = new List <string> (Glfw3.GetRequiredInstanceExtensions());
if (EnabledInstanceExtensions != null)
{
instExts.AddRange(EnabledInstanceExtensions);
}
instance = new Instance(instExts.ToArray());
hSurf = instance.CreateSurface(hWin);
selectPhysicalDevice();
VkPhysicalDeviceFeatures enabledFeatures = default;
configureEnabledFeatures(phy.Features, ref enabledFeatures);
//First create the c# device class
dev = new Device(phy);
dev.debugUtilsEnabled = instance.debugUtilsEnabled; //store a boolean to prevent testing against the extension string presence.
//create queue class
createQueues();
//activate the device to have effective queues created accordingly to what's available
dev.Activate(enabledFeatures, EnabledDeviceExtensions);
swapChain = new SwapChain(presentQueue as PresentQueue, Width, Height, SwapChain.PREFERED_FORMAT,
VSync ? VkPresentModeKHR.FifoKHR : VkPresentModeKHR.ImmediateKHR);
swapChain.Activate();
Width = swapChain.Width;
Height = swapChain.Height;
cmdPool = new CommandPool(dev, presentQueue.qFamIndex, VkCommandPoolCreateFlags.ResetCommandBuffer);
cmds = new PrimaryCommandBuffer[swapChain.ImageCount];
drawComplete = new VkSemaphore[swapChain.ImageCount];
drawFence = new Fence(dev, true, "draw fence");
for (int i = 0; i < swapChain.ImageCount; i++)
{
drawComplete[i] = dev.CreateSemaphore();
drawComplete[i].SetDebugMarkerName(dev, "Semaphore DrawComplete" + i);
}
cmdPool.SetName("main CmdPool");
}
