Nikita Tsukanov
9 years ago
8 changed files with 233 additions and 20 deletions
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Runtime.InteropServices; |
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using System.Text; |
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using System.Threading.Tasks; |
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using System.Windows; |
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using System.Windows.Interop; |
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using Avalonia.Direct2D1; |
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using SharpDX; |
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using SharpDX.Direct2D1; |
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using SharpDX.Direct3D11; |
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using SharpDX.Direct3D9; |
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using SharpDX.DXGI; |
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using AlphaMode = SharpDX.Direct2D1.AlphaMode; |
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using Device = SharpDX.Direct3D11.Device; |
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using Format = SharpDX.DXGI.Format; |
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using MapFlags = SharpDX.Direct3D11.MapFlags; |
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using PresentParameters = SharpDX.DXGI.PresentParameters; |
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using RenderTarget = SharpDX.Direct2D1.RenderTarget; |
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using Surface = SharpDX.DXGI.Surface; |
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using SwapEffect = SharpDX.DXGI.SwapEffect; |
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using Usage = SharpDX.Direct3D9.Usage; |
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namespace Avalonia.Win32.Interop.Wpf |
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{ |
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class Direct2DImageSurface : IExternalDirect2DRenderTargetSurface |
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{ |
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class Pair: IDisposable |
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{ |
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public SharpDX.Direct3D9.Surface Texture { get; } |
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public SharpDX.Direct3D11.Resource D3D11Resource { get; } |
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public SharpDX.Direct3D11.Resource StagingResource { get; } |
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public RenderTarget Target { get;} |
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public Size Size { get; } |
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public Pair(Size size, Vector dpi) |
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{ |
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int width = (int) size.Width; |
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int height = (int) size.Height; |
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using (var texture = new Texture2D(s_dxDevice, new Texture2DDescription |
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{ |
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Width = width, |
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Height = height, |
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ArraySize = 1, |
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MipLevels = 1, |
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Format = Format.B8G8R8A8_UNorm, |
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Usage = ResourceUsage.Default, |
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SampleDescription = new SampleDescription(1, 0), |
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BindFlags = BindFlags.RenderTarget | BindFlags.ShaderResource, |
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OptionFlags = ResourceOptionFlags.Shared |
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})) |
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using (var surface = texture.QueryInterface<Surface>()) |
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using (var resource = texture.QueryInterface<SharpDX.DXGI.Resource>()) |
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{ |
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D3D11Resource = texture.QueryInterface<SharpDX.Direct3D11.Resource>(); |
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var handle = resource.SharedHandle; |
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using (var texture9 = new Texture(s_d3DDevice, texture.Description.Width, |
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texture.Description.Height, 1, |
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Usage.RenderTarget, SharpDX.Direct3D9.Format.A8R8G8B8, Pool.Default, ref handle)) |
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Texture = texture9.GetSurfaceLevel(0); |
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Target = new RenderTarget(AvaloniaLocator.Current.GetService<SharpDX.Direct2D1.Factory>(), surface, |
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new RenderTargetProperties |
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{ |
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DpiX = (float) dpi.X, |
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DpiY = (float) dpi.Y, |
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MinLevel = FeatureLevel.Level_10, |
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PixelFormat = new PixelFormat(Format.B8G8R8A8_UNorm, AlphaMode.Premultiplied), |
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}); |
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} |
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using (var texture = new Texture2D(s_dxDevice, new Texture2DDescription |
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{ |
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Width = Math.Min(width, 16), |
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Height = Math.Min(height, 16), |
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ArraySize = 1, |
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MipLevels = 1, |
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Format = Format.B8G8R8A8_UNorm, |
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Usage = ResourceUsage.Staging, |
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SampleDescription = new SampleDescription(1, 0), |
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CpuAccessFlags = CpuAccessFlags.Read |
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})) |
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StagingResource = texture.QueryInterface<SharpDX.Direct3D11.Resource>(); |
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Size = size; |
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} |
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public void Dispose() |
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{ |
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Texture?.Dispose(); |
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Target?.Dispose(); |
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D3D11Resource?.Dispose(); |
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StagingResource?.Dispose(); |
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} |
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public void Flush() |
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{ |
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s_dxDevice.ImmediateContext.CopySubresourceRegion(D3D11Resource, 0, |
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new ResourceRegion(0, 0, 0, 1, 1, 1), StagingResource, 0, 0, 0, 0); |
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s_dxDevice.ImmediateContext.MapSubresource(StagingResource, 0, MapMode.Read, MapFlags.None); |
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s_dxDevice.ImmediateContext.UnmapSubresource(StagingResource, 0); |
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} |
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} |
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private D3DImage _image; |
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private Pair _backBuffer; |
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private Pair _frontBuffer; |
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private readonly WpfTopLevelImpl _impl; |
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private static Device s_dxDevice; |
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private static Direct3DEx s_d3DContext; |
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private static DeviceEx s_d3DDevice; |
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[DllImport("user32.dll", SetLastError = false)] |
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private static extern IntPtr GetDesktopWindow(); |
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void EnsureDirectX() |
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{ |
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if(s_d3DDevice != null) |
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return; |
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s_d3DContext = new Direct3DEx(); |
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SharpDX.Direct3D9.PresentParameters presentparams = new SharpDX.Direct3D9.PresentParameters |
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{ |
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Windowed = true, |
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SwapEffect = SharpDX.Direct3D9.SwapEffect.Discard, |
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DeviceWindowHandle = GetDesktopWindow(), |
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PresentationInterval = PresentInterval.Default |
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}; |
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s_dxDevice = s_dxDevice ?? AvaloniaLocator.Current.GetService<SharpDX.DXGI.Device>() |
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.QueryInterface<SharpDX.Direct3D11.Device>(); |
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s_d3DDevice = new DeviceEx(s_d3DContext, 0, DeviceType.Hardware, IntPtr.Zero, CreateFlags.HardwareVertexProcessing | CreateFlags.Multithreaded | CreateFlags.FpuPreserve, presentparams); |
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} |
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public Direct2DImageSurface(WpfTopLevelImpl impl) |
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{ |
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_impl = impl; |
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} |
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public RenderTarget GetOrCreateRenderTarget() |
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{ |
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EnsureDirectX(); |
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var scale = _impl.GetScaling(); |
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var size = new Size(_impl.ActualWidth * scale.X, _impl.ActualHeight * scale.Y); |
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var dpi = scale * 96; |
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if (_backBuffer!=null && _backBuffer.Size == size) |
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return _backBuffer.Target; |
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if (_image == null) |
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_image = new DX11Image(); |
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_impl.ImageSource = _image; |
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RemoveAndDispose(ref _backBuffer); |
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if (size == default(Size)) |
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{ |
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RemoveAndDispose(ref _frontBuffer); |
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_image.Lock(); |
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_image.SetBackBuffer(D3DResourceType.IDirect3DSurface9, IntPtr.Zero); |
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_image.Unlock(); |
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return null; |
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} |
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_backBuffer = new Pair(size, dpi); |
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return _backBuffer.Target; |
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} |
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void RemoveAndDispose<T>(ref T d) where T : IDisposable |
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{ |
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d?.Dispose(); |
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d = default(T); |
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} |
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void DoSwap() |
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{ |
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} |
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void Swap() |
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{ |
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var oldFront = _frontBuffer; |
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_frontBuffer = _backBuffer; |
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_backBuffer = oldFront; |
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_frontBuffer.Flush(); |
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_image.Lock(); |
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_image.SetBackBuffer(D3DResourceType.IDirect3DSurface9, _frontBuffer?.Texture?.NativePointer ?? IntPtr.Zero, true); |
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_image.AddDirtyRect(new Int32Rect(0, 0, _image.PixelWidth, _image.PixelHeight)); |
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_image.Unlock(); |
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} |
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public void DestroyRenderTarget() |
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{ |
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//?
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} |
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public void BeforeDrawing() |
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{ |
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} |
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public void AfterDrawing() => Swap(); |
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} |
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} |
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