internal static void SelectAvailableDevices(VulkanInstance instance,
VulkanSurface surface, bool preferDiscreteGpu, string preferredDevice)
{
uint physicalDeviceCount;
instance.Api.EnumeratePhysicalDevices(instance.InternalHandle, &physicalDeviceCount, null).ThrowOnError();
var physicalDevices = new PhysicalDevice[physicalDeviceCount];
fixed(PhysicalDevice *pPhysicalDevices = physicalDevices)
{
instance.Api.EnumeratePhysicalDevices(instance.InternalHandle, &physicalDeviceCount, pPhysicalDevices)
.ThrowOnError();
}
PhysicalDevices = new Dictionary <PhysicalDevice, PhysicalDeviceProperties>();
foreach (var physicalDevice in physicalDevices)
{
instance.Api.GetPhysicalDeviceProperties(physicalDevice, out var properties);
PhysicalDevices.Add(physicalDevice, properties);
}
SuitableDevices = PhysicalDevices.Where(x => IsSuitableDevice(
instance.Api,
x.Key,
x.Value,
surface.ApiHandle,
out _,
out _));
}
internal static VulkanPhysicalDevice FindSuitablePhysicalDevice(VulkanInstance instance,
VulkanSurface surface, bool preferDiscreteGpu, string preferredDevice)
{
SelectAvailableDevices(instance, surface, preferDiscreteGpu, preferredDevice);
uint queueFamilyIndex = 0;
uint queueCount = 0;
if (!string.IsNullOrWhiteSpace(preferredDevice))
{
var physicalDevice = SuitableDevices.FirstOrDefault(x => VulkanInitialization.StringFromIdPair(x.Value.VendorID, x.Value.DeviceID) == preferredDevice);
queueFamilyIndex = FindSuitableQueueFamily(instance.Api, physicalDevice.Key,
surface.ApiHandle, out queueCount);
if (queueFamilyIndex != int.MaxValue)
{
return(new VulkanPhysicalDevice(physicalDevice.Key, instance.Api, queueCount, queueFamilyIndex));
}
}
if (preferDiscreteGpu)
{
var discreteGpus = SuitableDevices.Where(p => p.Value.DeviceType == PhysicalDeviceType.DiscreteGpu);
foreach (var gpu in discreteGpus)
{
queueFamilyIndex = FindSuitableQueueFamily(instance.Api, gpu.Key,
surface.ApiHandle, out queueCount);
if (queueFamilyIndex != int.MaxValue)
{
return(new VulkanPhysicalDevice(gpu.Key, instance.Api, queueCount, queueFamilyIndex));
}
}
}
foreach (var physicalDevice in SuitableDevices)
{
queueFamilyIndex = FindSuitableQueueFamily(instance.Api, physicalDevice.Key,
surface.ApiHandle, out queueCount);
if (queueFamilyIndex != int.MaxValue)
{
return(new VulkanPhysicalDevice(physicalDevice.Key, instance.Api, queueCount, queueFamilyIndex));
}
}
throw new Exception("No suitable physical device found");
}
private VulkanDisplay(VulkanInstance instance, VulkanDevice device,
VulkanPhysicalDevice physicalDevice, VulkanSurface surface, SwapchainKHR swapchain,
Extent2D swapchainExtent)
{
_instance = instance;
_device = device;
_physicalDevice = physicalDevice;
_swapchain = swapchain;
_swapchainExtent = swapchainExtent;
_surface = surface;
CreateSwapchainImages();
_semaphorePair = new VulkanSemaphorePair(_device);
CommandBufferPool = new VulkanCommandBufferPool(device, physicalDevice);
}
public VulkanSurfaceRenderTarget CreateRenderTarget(IVulkanPlatformSurface platformSurface)
{
var surface = VulkanSurface.CreateSurface(Instance, platformSurface);
if (PhysicalDevice == null)
{
PhysicalDevice = VulkanPhysicalDevice.FindSuitablePhysicalDevice(Instance, surface, _options.PreferDiscreteGpu, _options.PreferredDevice);
}
var renderTarget = new VulkanSurfaceRenderTarget(this, surface);
if (MainSurface == null && surface != null)
{
MainSurface = renderTarget;
}
return(renderTarget);
}
private static unsafe Extent2D GetSwapchainExtent(VulkanSurface surface, SurfaceCapabilitiesKHR capabilities)
{
Extent2D swapchainExtent;
if (capabilities.CurrentExtent.Width != uint.MaxValue)
{
swapchainExtent = capabilities.CurrentExtent;
}
else
{
var surfaceSize = surface.SurfaceSize;
var width = Math.Clamp((uint)surfaceSize.Width, capabilities.MinImageExtent.Width, capabilities.MaxImageExtent.Width);
var height = Math.Clamp((uint)surfaceSize.Height, capabilities.MinImageExtent.Height, capabilities.MaxImageExtent.Height);
swapchainExtent = new Extent2D(width, height);
}
return(swapchainExtent);
}
private static unsafe SwapchainKHR CreateSwapchain(VulkanInstance instance, VulkanDevice device,
VulkanPhysicalDevice physicalDevice, VulkanSurface surface, out Extent2D swapchainExtent,
SwapchainKHR?oldswapchain = null, bool vsyncEnabled = true)
{
if (_swapchainExtension == null)
{
instance.Api.TryGetDeviceExtension(instance.InternalHandle, device.InternalHandle, out _swapchainExtension);
}
while (!surface.CanSurfacePresent(physicalDevice))
{
Thread.Sleep(16);
}
VulkanSurface.SurfaceExtension.GetPhysicalDeviceSurfaceCapabilities(physicalDevice.InternalHandle,
surface.ApiHandle, out var capabilities);
var imageCount = capabilities.MinImageCount + 1;
if (capabilities.MaxImageCount > 0 && imageCount > capabilities.MaxImageCount)
{
imageCount = capabilities.MaxImageCount;
}
var surfaceFormat = surface.GetSurfaceFormat(physicalDevice);
bool supportsIdentityTransform = capabilities.SupportedTransforms.HasFlag(SurfaceTransformFlagsKHR.SurfaceTransformIdentityBitKhr);
bool isRotated = capabilities.CurrentTransform.HasFlag(SurfaceTransformFlagsKHR.SurfaceTransformRotate90BitKhr) ||
capabilities.CurrentTransform.HasFlag(SurfaceTransformFlagsKHR.SurfaceTransformRotate270BitKhr);
swapchainExtent = GetSwapchainExtent(surface, capabilities);
CompositeAlphaFlagsKHR compositeAlphaFlags = GetSuitableCompositeAlphaFlags(capabilities);
PresentModeKHR presentMode = GetSuitablePresentMode(physicalDevice, surface, vsyncEnabled);
var swapchainCreateInfo = new SwapchainCreateInfoKHR
{
SType = StructureType.SwapchainCreateInfoKhr,
Surface = surface.ApiHandle,
MinImageCount = imageCount,
ImageFormat = surfaceFormat.Format,
ImageColorSpace = surfaceFormat.ColorSpace,
ImageExtent = swapchainExtent,
ImageUsage =
ImageUsageFlags.ImageUsageColorAttachmentBit | ImageUsageFlags.ImageUsageTransferDstBit,
ImageSharingMode = SharingMode.Exclusive,
ImageArrayLayers = 1,
PreTransform = supportsIdentityTransform && isRotated ?
SurfaceTransformFlagsKHR.SurfaceTransformIdentityBitKhr :
capabilities.CurrentTransform,
CompositeAlpha = compositeAlphaFlags,
PresentMode = presentMode,
Clipped = true,
OldSwapchain = oldswapchain ?? new SwapchainKHR()
};
_swapchainExtension.CreateSwapchain(device.InternalHandle, swapchainCreateInfo, null, out var swapchain)
.ThrowOnError();
if (oldswapchain != null)
{
_swapchainExtension.DestroySwapchain(device.InternalHandle, oldswapchain.Value, null);
}
return(swapchain);
}
internal static VulkanDisplay CreateDisplay(VulkanInstance instance, VulkanDevice device,
VulkanPhysicalDevice physicalDevice, VulkanSurface surface)
{
var swapchain = CreateSwapchain(instance, device, physicalDevice, surface, out var extent, null, true);
return(new VulkanDisplay(instance, device, physicalDevice, surface, swapchain, extent));
}
private static unsafe PresentModeKHR GetSuitablePresentMode(VulkanPhysicalDevice physicalDevice, VulkanSurface surface, bool vsyncEnabled)
{
uint presentModesCount;
VulkanSurface.SurfaceExtension.GetPhysicalDeviceSurfacePresentModes(physicalDevice.InternalHandle,
surface.ApiHandle,
&presentModesCount, null);
var presentModes = new PresentModeKHR[presentModesCount];
fixed(PresentModeKHR *pPresentModes = presentModes)
{
VulkanSurface.SurfaceExtension.GetPhysicalDeviceSurfacePresentModes(physicalDevice.InternalHandle,
surface.ApiHandle, &presentModesCount, pPresentModes);
}
var modes = presentModes.ToList();
if (!vsyncEnabled && modes.Contains(PresentModeKHR.PresentModeImmediateKhr))
{
return(PresentModeKHR.PresentModeImmediateKhr);
}
else if (modes.Contains(PresentModeKHR.PresentModeMailboxKhr))
{
return(PresentModeKHR.PresentModeMailboxKhr);
}
else if (modes.Contains(PresentModeKHR.PresentModeFifoKhr))
{
return(PresentModeKHR.PresentModeFifoKhr);
}
else
{
return(PresentModeKHR.PresentModeImmediateKhr);
}
}