/// <summary>
/// Initializes a new instance of the <see cref="SwapchainCreateInfoKhr"/> structure.
/// </summary>
/// <param name="surface">
/// The <see cref="SurfaceKhr"/> that the swapchain will present images to.
/// </param>
/// <param name="imageExtent">
/// The size (in pixels) of the swapchain.
/// <para>
/// Behavior is platform-dependent when the image extent does not match the surface's <see
/// cref="SurfaceCapabilitiesKhr.CurrentExtent"/> as returned by <see cref="PhysicalDeviceExtensions.GetSurfaceCapabilitiesKhr"/>.
/// </para>
/// </param>
/// <param name="preTransform">
/// A bitmask describing the transform, relative to the presentation engine's natural
/// orientation, applied to the image content prior to presentation.
/// <para>
/// If it does not match the <see cref="SurfaceCapabilitiesKhr.CurrentTransform"/> value
/// returned by <see cref="PhysicalDeviceExtensions.GetSurfaceCapabilitiesKhr"/>, the
/// presentation engine will transform the image content as part of the presentation operation.
/// </para>
/// </param>
/// <param name="imageUsage">
/// A bitmask indicating how the application will use the swapchain's presentable images.
/// </param>
/// <param name="flags">A bitmask indicating parameters of swapchain creation.</param>
/// <param name="minImageCount">
/// The minimum number of presentable images that the application needs. The platform will
/// either create the swapchain with at least that many images, or will fail to create the swapchain.
/// </param>
/// <param name="imageFormat">A format that is valid for swapchains on the specified surface.</param>
/// <param name="compositeAlpha">
/// A bitmask indicating the alpha compositing mode to use when this surface is composited
/// together with other surfaces on certain window systems.
/// </param>
/// <param name="imageArrayLayers">
/// The number of views in a multiview/stereo surface. For non-stereoscopic-3D applications,
/// this value is 1.
/// </param>
/// <param name="presentMode">
/// The presentation mode the swapchain will use.
/// <para>
/// A swapchain's present mode determines how incoming present requests will be processed and
/// queued internally.
/// </para>
/// </param>
/// <param name="clipped">
/// Indicates whether the Vulkan implementation is allowed to discard rendering operations
/// that affect regions of the surface which are not visible.
/// </param>
/// <param name="oldSwapchain">Existing swapchain to replace, if any.</param>
public SwapchainCreateInfoKhr(
SurfaceKhr surface,
Format imageFormat,
Extent2D imageExtent,
SurfaceTransformsKhr preTransform,
PresentModeKhr presentMode,
SwapchainCreateFlagsKhr flags = 0,
int minImageCount = 2,
ImageUsages imageUsage = ImageUsages.ColorAttachment | ImageUsages.TransferDst,
CompositeAlphasKhr compositeAlpha = CompositeAlphasKhr.Opaque,
int imageArrayLayers = 1,
bool clipped = true,
SwapchainKhr oldSwapchain = null)
{
Flags = flags;
Surface = surface;
ImageUsage = imageUsage;
MinImageCount = minImageCount;
ImageFormat = imageFormat;
ImageColorSpace = 0;
ImageExtent = imageExtent;
ImageArrayLayers = imageArrayLayers;
ImageSharingMode = 0;
QueueFamilyIndices = null;
PreTransform = preTransform;
CompositeAlpha = compositeAlpha;
PresentMode = presentMode;
Clipped = clipped;
OldSwapchain = oldSwapchain;
}
/// <summary>
/// Initializes a new instance of the <see cref="SwapchainCreateInfoKhr"/> structure.
/// </summary>
/// <param name="surface">
/// The <see cref="SurfaceKhr"/> that the swapchain will present images to.
/// </param>
/// <param name="imageFormat">A format that is valid for swapchains on the specified surface.</param>
/// <param name="imageExtent">
/// The size (in pixels) of the swapchain.
/// <para>
/// Behavior is platform-dependent when the image extent does not match the surface's <see
/// cref="SurfaceCapabilitiesKhr.CurrentExtent"/> as returned by <see cref="PhysicalDeviceExtensions.GetSurfaceCapabilitiesKhr"/>.
/// </para>
/// </param>
/// <param name="minImageCount">
/// The minimum number of presentable images that the application needs. The platform will
/// either create the swapchain with at least that many images, or will fail to create the swapchain.
/// </param>
/// <param name="imageColorSpace">Color space value specifying the way the swapchain interprets image data.</param>
/// <param name="imageArrayLayers">
/// The number of views in a multiview/stereo surface.
/// <para>For non-stereoscopic-3D applications, this value is 1.</para>
/// </param>
/// <param name="imageUsage">A bitmask describing the intended usage of the (acquired) swapchain images.</param>
/// <param name="imageSharingMode">The sharing mode used for the image(s) of the swapchain.</param>
/// <param name="queueFamilyIndices">
/// Queue family indices having access to the image(s) of the swapchain when <see
/// cref="ImageSharingMode"/> is <see cref="SharingMode.Concurrent"/>.
/// </param>
/// <param name="preTransform">
/// A value describing the transform, relative to the presentation engine's natural
/// orientation, applied to the image content prior to presentation.
/// <para>
/// If it does not match the <see cref="SurfaceCapabilitiesKhr.CurrentTransform"/> value
/// returned by <see cref="PhysicalDeviceExtensions.GetSurfaceCapabilitiesKhr"/>, the
/// presentation engine will transform the image content as part of the presentation operation.
/// </para>
/// </param>
/// <param name="compositeAlpha">
/// A bitmask indicating the alpha compositing mode to use when this surface is composited
/// together with other surfaces on certain window systems.
/// </param>
/// <param name="presentMode">
/// The presentation mode the swapchain will use.
/// <para>
/// A swapchain's present mode determines how incoming present requests will be processed and
/// queued internally.
/// </para>
/// </param>
/// <param name="clipped">
/// Indicates whether the Vulkan implementation is allowed to discard rendering operations
/// that affect regions of the surface which are not visible.</param>
/// <param name="oldSwapchain">Existing swapchain to replace, if any.</param>
public SwapchainCreateInfoKhr(
SurfaceKhr surface,
Format imageFormat,
Extent2D imageExtent,
int minImageCount = 2,
ColorSpaceKhr imageColorSpace = ColorSpaceKhr.SRgbNonlinear,
int imageArrayLayers = 1,
ImageUsages imageUsage = ImageUsages.ColorAttachment | ImageUsages.TransferDst,
SharingMode imageSharingMode = SharingMode.Exclusive,
int[] queueFamilyIndices = null,
SurfaceTransformsKhr preTransform = SurfaceTransformsKhr.Identity,
CompositeAlphasKhr compositeAlpha = CompositeAlphasKhr.Opaque,
PresentModeKhr presentMode = PresentModeKhr.Fifo,
bool clipped = true,
SwapchainKhr oldSwapchain = null)
{
Flags = SwapchainCreateFlagsKhr.None;
Surface = surface;
MinImageCount = minImageCount;
ImageFormat = imageFormat;
ImageColorSpace = imageColorSpace;
ImageExtent = imageExtent;
ImageArrayLayers = imageArrayLayers;
ImageUsage = imageUsage;
ImageSharingMode = imageSharingMode;
QueueFamilyIndices = queueFamilyIndices;
PreTransform = preTransform;
CompositeAlpha = compositeAlpha;
PresentMode = presentMode;
Clipped = clipped;
OldSwapchain = oldSwapchain;
}
public Swapchain(GraphicsDevice gdevice, Vk.Instance instance, Vk.PhysicalDevice pDevice, Vk.Device device)
{
Device = gdevice;
_window = gdevice.Application.Window;
_vkInstance = instance;
_vkPhysicalDevice = pDevice;
_vkDevice = device;
// Create the surface
long surfHandle = Glfw.CreateWindowSurface(instance, _window.Handle);
Vk.AllocationCallbacks?acb = null;
Surface = new VkKhr.SurfaceKhr(instance, ref acb, surfHandle);
if (VkKhr.PhysicalDeviceExtensions.GetSurfaceSupportKhr(pDevice, gdevice.Queues.Graphics.FamilyIndex, Surface) == Vk.Constant.False)
{
LFATAL($"The physical device '{gdevice.Info.Name}' does not support surface presentation.");
throw new PlatformNotSupportedException("Physical device does not support surface presentation.");
}
LINFO("Created Vulkan presentation surface.");
// Check the surface for swapchain support levels
var sFmts = VkKhr.PhysicalDeviceExtensions.GetSurfaceFormatsKhr(pDevice, Surface);
var pModes = VkKhr.PhysicalDeviceExtensions.GetSurfacePresentModesKhr(pDevice, Surface);
if (sFmts.Length == 0)
{
throw new PlatformNotSupportedException("The chosen device does not support any presentation formats.");
}
if (pModes.Length == 0)
{
throw new PlatformNotSupportedException("The chosen device does not support any presentation modes.");
}
// Choose the best available surface format
if (sFmts.Length == 1 && sFmts[0].Format == Vk.Format.Undefined) // We are allowed to pick!
{
_surfaceFormat = PREFERRED_SURFACE_FORMATS[0];
}
else // Check if one of the preferred formats is available, otherwise just use the first format given
{
var sfmt = PREFERRED_SURFACE_FORMATS.FirstOrDefault(fmt => sFmts.Contains(fmt));
if (sfmt.Format == 0 && sfmt.ColorSpace == 0)
{
_surfaceFormat = sFmts[0];
}
else
{
_surfaceFormat = sfmt;
}
}
// Choose the presentation mode (prefer mailbox -> fifo -> imm)
_presentMode =
pModes.Contains(VkKhr.PresentModeKhr.Mailbox) ? VkKhr.PresentModeKhr.Mailbox :
pModes.Contains(VkKhr.PresentModeKhr.Fifo) ? VkKhr.PresentModeKhr.Fifo :
VkKhr.PresentModeKhr.Immediate;
// Prepare the synchronization objects
_syncObjects.ImageAvailable = new Vk.Semaphore[MAX_INFLIGHT_FRAMES];
_syncObjects.BlitComplete = new Vk.Semaphore[MAX_INFLIGHT_FRAMES];
for (int i = 0; i < MAX_INFLIGHT_FRAMES; ++i)
{
_syncObjects.ImageAvailable[i] = device.CreateSemaphore();
_syncObjects.BlitComplete[i] = device.CreateSemaphore();
}
// Setup the command buffers
var cpci = new Vk.CommandPoolCreateInfo(_presentQueue.FamilyIndex,
Vk.CommandPoolCreateFlags.Transient | Vk.CommandPoolCreateFlags.ResetCommandBuffer);
_commandPool = device.CreateCommandPool(cpci);
var cbai = new Vk.CommandBufferAllocateInfo(Vk.CommandBufferLevel.Primary, 1);
_commandBuffer = _commandPool.AllocateBuffers(cbai)[0];
_blitFence = device.CreateFence(); // Do NOT start this signalled, as it is needed in rebuildSwapchain() below
_rtTransferBarrier = new Vk.ImageMemoryBarrier(
null,
new Vk.ImageSubresourceRange(Vk.ImageAspects.Color, 0, 1, 0, 1),
Vk.Accesses.ColorAttachmentWrite,
Vk.Accesses.TransferRead,
Vk.ImageLayout.ColorAttachmentOptimal,
Vk.ImageLayout.TransferSrcOptimal
);
_rtAttachBarrier = new Vk.ImageMemoryBarrier(
null,
new Vk.ImageSubresourceRange(Vk.ImageAspects.Color, 0, 1, 0, 1),
Vk.Accesses.TransferRead,
Vk.Accesses.ColorAttachmentWrite,
Vk.ImageLayout.TransferSrcOptimal,
Vk.ImageLayout.ColorAttachmentOptimal
);
// Build the swapchain
rebuildSwapchain();
}
