diff --git a/src/Windows/Avalonia.Direct2D1/SwapChainRenderTarget.cs b/src/Windows/Avalonia.Direct2D1/SwapChainRenderTarget.cs index f820129b8d..94d407ed0b 100644 --- a/src/Windows/Avalonia.Direct2D1/SwapChainRenderTarget.cs +++ b/src/Windows/Avalonia.Direct2D1/SwapChainRenderTarget.cs @@ -7,11 +7,13 @@ using SharpDX; using SharpDX.Direct2D1; using SharpDX.DXGI; -using AlphaMode = SharpDX.Direct2D1.AlphaMode; -using PixelFormat = SharpDX.Direct2D1.PixelFormat; - namespace Avalonia.Direct2D1 { + + using AlphaMode = SharpDX.Direct2D1.AlphaMode; + using DeviceContext = SharpDX.Direct2D1.DeviceContext; + using PixelFormat = SharpDX.Direct2D1.PixelFormat; + public abstract class SwapChainRenderTarget : IRenderTarget, ILayerFactory { private Size2 _savedSize; @@ -32,7 +34,8 @@ namespace Avalonia.Direct2D1 { _savedSize = size; _savedDpi = dpi; - CreateSwapChain(); + + Resize(); } return new DrawingContextImpl(visualBrushRenderer, this, _deviceContext, _swapChain); @@ -42,7 +45,7 @@ namespace Avalonia.Direct2D1 { if (_deviceContext == null) { - CreateSwapChain(); + CreateDeviceContext(); } return D2DRenderTargetBitmapImpl.CreateCompatible(_deviceContext, size); @@ -51,54 +54,68 @@ namespace Avalonia.Direct2D1 public void Dispose() { _deviceContext?.Dispose(); + _swapChain?.Dispose(); } + private void Resize() + { + _deviceContext?.Dispose(); + _deviceContext = null; + + _swapChain?.ResizeBuffers(0, 0, 0, Format.Unknown, SwapChainFlags.None); + + CreateDeviceContext(); + } + private void CreateSwapChain() { - using (var dxgiAdaptor = Direct2D1Platform.DxgiDevice.Adapter) - using (var dxgiFactory = dxgiAdaptor.GetParent()) + var swapChainDescription = new SwapChainDescription1 { - _deviceContext?.Dispose(); - _deviceContext = new DeviceContext(Direct2D1Platform.Direct2D1Device, DeviceContextOptions.None) { DotsPerInch = _savedDpi }; - - var swapChainDesc = new SwapChainDescription1 + Width = _savedSize.Width, + Height = _savedSize.Height, + Format = Format.B8G8R8A8_UNorm, + SampleDescription = new SampleDescription { - Width = _savedSize.Width, - Height = _savedSize.Height, - Format = Format.B8G8R8A8_UNorm, - Stereo = false, - SampleDescription = new SampleDescription + Count = 1, + Quality = 0, + }, + Usage = Usage.RenderTargetOutput, + BufferCount = 1, + SwapEffect = SwapEffect.Discard, + }; + + using (var dxgiAdapter = Direct2D1Platform.DxgiDevice.Adapter) + using (var dxgiFactory = dxgiAdapter.GetParent()) + { + _swapChain = CreateSwapChain(dxgiFactory, swapChainDescription); + } + } + + private void CreateDeviceContext() + { + _deviceContext = new DeviceContext(Direct2D1Platform.Direct2D1Device, DeviceContextOptions.None) { DotsPerInch = _savedDpi }; + + if (_swapChain == null) + { + CreateSwapChain(); + } + + using (var dxgiBackBuffer = _swapChain.GetBackBuffer(0)) + using (var d2dBackBuffer = new Bitmap1( + _deviceContext, + dxgiBackBuffer, + new BitmapProperties1( + new PixelFormat { - Count = 1, - Quality = 0, + AlphaMode = AlphaMode.Premultiplied, + Format = Format.B8G8R8A8_UNorm }, - Usage = Usage.RenderTargetOutput, - BufferCount = 1, - Scaling = Scaling.Stretch, - SwapEffect = SwapEffect.Discard, - Flags = 0, - }; - - _swapChain?.Dispose(); - _swapChain = CreateSwapChain(dxgiFactory, swapChainDesc); - - using (var dxgiBackBuffer = _swapChain.GetBackBuffer(0)) - using (var d2dBackBuffer = new Bitmap1( - _deviceContext, - dxgiBackBuffer, - new BitmapProperties1( - new PixelFormat - { - AlphaMode = AlphaMode.Premultiplied, - Format = Format.B8G8R8A8_UNorm - }, - _savedDpi.Width, - _savedDpi.Height, - BitmapOptions.Target | BitmapOptions.CannotDraw))) - { - _deviceContext.Target = d2dBackBuffer; - } + _savedSize.Width, + _savedSize.Height, + BitmapOptions.Target | BitmapOptions.CannotDraw))) + { + _deviceContext.Target = d2dBackBuffer; } }