private void CreateDepthStencilBuffer()
{
var formats = new[] {
SharpVulkan.Format.D32SFloatS8UInt,
SharpVulkan.Format.D24UNormS8UInt,
SharpVulkan.Format.D16UNormS8UInt
};
depthStencilFormat = formats.First(format => {
context.PhysicalDevice.GetFormatProperties(format, out var formatProperties);
return((formatProperties.OptimalTilingFeatures & SharpVulkan.FormatFeatureFlags.DepthStencilAttachment) != 0);
});
var tiling = SharpVulkan.ImageTiling.Optimal;
var createInfo = new SharpVulkan.ImageCreateInfo {
StructureType = SharpVulkan.StructureType.ImageCreateInfo,
ImageType = SharpVulkan.ImageType.Image2D,
Usage = SharpVulkan.ImageUsageFlags.DepthStencilAttachment,
Format = depthStencilFormat,
Extent = new SharpVulkan.Extent3D((uint)width, (uint)height, 1),
MipLevels = 1,
ArrayLayers = 1,
Samples = SharpVulkan.SampleCountFlags.Sample1,
SharingMode = SharpVulkan.SharingMode.Exclusive,
Tiling = tiling,
InitialLayout = SharpVulkan.ImageLayout.Undefined
};
depthStencilBuffer = context.Device.CreateImage(ref createInfo);
depthStencilMemory = context.MemoryAllocator.Allocate(depthStencilBuffer, SharpVulkan.MemoryPropertyFlags.DeviceLocal, tiling);
var viewCreateInfo = new SharpVulkan.ImageViewCreateInfo {
StructureType = SharpVulkan.StructureType.ImageViewCreateInfo,
ViewType = SharpVulkan.ImageViewType.Image2D,
Image = depthStencilBuffer,
Format = depthStencilFormat,
Components = SharpVulkan.ComponentMapping.Identity,
SubresourceRange = new SharpVulkan.ImageSubresourceRange(
SharpVulkan.ImageAspectFlags.Depth |
SharpVulkan.ImageAspectFlags.Stencil)
};
depthStencilView = context.Device.CreateImageView(ref viewCreateInfo);
var memoryBarrier = new SharpVulkan.ImageMemoryBarrier {
StructureType = SharpVulkan.StructureType.ImageMemoryBarrier,
Image = depthStencilBuffer,
OldLayout = SharpVulkan.ImageLayout.Undefined,
NewLayout = SharpVulkan.ImageLayout.DepthStencilAttachmentOptimal,
SourceAccessMask = SharpVulkan.AccessFlags.None,
DestinationAccessMask = SharpVulkan.AccessFlags.DepthStencilAttachmentRead | SharpVulkan.AccessFlags.DepthStencilAttachmentWrite,
SubresourceRange = new SharpVulkan.ImageSubresourceRange(
SharpVulkan.ImageAspectFlags.Depth |
SharpVulkan.ImageAspectFlags.Stencil)
};
context.EndRenderPass();
context.EnsureCommandBuffer();
context.CommandBuffer.PipelineBarrier(SharpVulkan.PipelineStageFlags.TopOfPipe,
SharpVulkan.PipelineStageFlags.EarlyFragmentTests | SharpVulkan.PipelineStageFlags.LateFragmentTests,
SharpVulkan.DependencyFlags.None, 0, null, 0, null, 1, &memoryBarrier);
}
public PlatformRenderTexture2D(PlatformRenderContext context, Format format, int width, int height, TextureParams textureParams)
: base(context, format, width, height, false, true, textureParams)
{
colorFormat = VulkanHelper.GetVKFormat(format);
CreateDepthStencilBuffer();
CreateRenderPass();
CreateFramebuffer();
}
private void CreateSwapchain()
{
var surfaceFormats = context.PhysicalDevice.GetSurfaceFormats(surface);
if (surfaceFormats.Length == 1 && surfaceFormats[0].Format == SharpVulkan.Format.Undefined)
{
backbufferFormat = SharpVulkan.Format.B8G8R8A8UNorm;
}
else
{
backbufferFormat = surfaceFormats[0].Format;
}
context.PhysicalDevice.GetSurfaceCapabilities(surface, out var surfaceCapabilities);
if (width < surfaceCapabilities.MinImageExtent.Width || height < surfaceCapabilities.MinImageExtent.Height ||
width > surfaceCapabilities.MaxImageExtent.Width || height > surfaceCapabilities.MaxImageExtent.Height
)
{
throw new InvalidOperationException();
}
var desiredBufferCount = 3U;
if (desiredBufferCount < surfaceCapabilities.MinImageCount)
{
desiredBufferCount = surfaceCapabilities.MinImageCount;
}
else if (surfaceCapabilities.MaxImageCount > 0 && desiredBufferCount > surfaceCapabilities.MaxImageCount)
{
desiredBufferCount = surfaceCapabilities.MaxImageCount;
}
var preTransform = SharpVulkan.SurfaceTransformFlags.Identity;
if ((surfaceCapabilities.SupportedTransforms & preTransform) == 0)
{
throw new NotSupportedException();
}
var compositeAlpha = SharpVulkan.CompositeAlphaFlags.Opaque;
if ((surfaceCapabilities.SupportedCompositeAlpha & compositeAlpha) == 0)
{
throw new NotSupportedException();
}
var backbufferUsage = SharpVulkan.ImageUsageFlags.ColorAttachment;
if ((surfaceCapabilities.SupportedUsageFlags & backbufferUsage) == 0)
{
throw new NotSupportedException();
}
var supportedPresentModes = context.PhysicalDevice.GetSurfacePresentModes(surface);
var presentMode = SharpVulkan.PresentMode.Fifo;
if (!vSync)
{
if (Array.IndexOf(supportedPresentModes, SharpVulkan.PresentMode.Immediate) >= 0)
{
presentMode = SharpVulkan.PresentMode.Immediate;
}
else if (Array.IndexOf(supportedPresentModes, SharpVulkan.PresentMode.Mailbox) >= 0)
{
presentMode = SharpVulkan.PresentMode.Mailbox;
}
}
var oldSwapchain = swapchain;
DestroySwapchain();
var createInfo = new SharpVulkan.SwapchainCreateInfo {
StructureType = SharpVulkan.StructureType.SwapchainCreateInfo,
Surface = surface,
PresentMode = presentMode,
PreTransform = preTransform,
CompositeAlpha = compositeAlpha,
ImageUsage = backbufferUsage,
ImageFormat = backbufferFormat,
ImageColorSpace = SharpVulkan.ColorSpace.SRgbNonlinear,
ImageExtent = new SharpVulkan.Extent2D((uint)width, (uint)height),
ImageArrayLayers = 1,
ImageSharingMode = SharpVulkan.SharingMode.Exclusive,
MinImageCount = desiredBufferCount,
Clipped = true,
OldSwapchain = oldSwapchain
};
swapchain = context.Device.CreateSwapchain(ref createInfo);
CreateBackbuffers();
CreateDepthStencilBuffer();
CreateRenderPass();
CreateFramebuffers();
AcquireNextImage();
}