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Move data between two Texture2D instances manually

pull/1069/head
Nikita Tsukanov 9 years ago
parent
1cc13484c0
commit
e0f481ae9f
1 changed files with 30 additions and 31 deletions
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  1. 61
      src/Windows/Avalonia.Win32.Interop/Wpf/Direct2DImageSurface.cs

61
src/Windows/Avalonia.Win32.Interop/Wpf/Direct2DImageSurface.cs
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@ -17,6 +17,8 @@ using Device = SharpDX.Direct3D11.Device;
using Format = SharpDX.DXGI.Format;
using MapFlags = SharpDX.Direct3D11.MapFlags;
using PresentParameters = SharpDX.DXGI.PresentParameters;
using Query = SharpDX.Direct3D11.Query;
using QueryType = SharpDX.Direct3D11.QueryType;
using RenderTarget = SharpDX.Direct2D1.RenderTarget;
using Surface = SharpDX.DXGI.Surface;
using SwapEffect = SharpDX.DXGI.SwapEffect;
@ -28,9 +30,9 @@ namespace Avalonia.Win32.Interop.Wpf
{
class SwapBuffer: IDisposable
{
private Query _event;
private readonly SharpDX.Direct3D11.Resource _resource;
private readonly SharpDX.Direct3D11.Resource _stagingResource;
private readonly SharpDX.Direct3D11.Resource _sharedResource;
public SharpDX.Direct3D9.Surface Texture { get; }
public RenderTarget Target { get;}
public Size Size { get; }
@ -39,6 +41,7 @@ namespace Avalonia.Win32.Interop.Wpf
{
int width = (int) size.Width;
int height = (int) size.Height;
_event = new Query(s_dxDevice, new QueryDescription {Type = QueryType.Event});
using (var texture = new Texture2D(s_dxDevice, new Texture2DDescription
{
Width = width,
@ -47,19 +50,14 @@ namespace Avalonia.Win32.Interop.Wpf
MipLevels = 1,
Format = Format.B8G8R8A8_UNorm,
Usage = ResourceUsage.Default,
SampleDescription = new SampleDescription(1, 0),
BindFlags = BindFlags.RenderTarget | BindFlags.ShaderResource,
OptionFlags = ResourceOptionFlags.Shared
SampleDescription = new SampleDescription(2, 0),
BindFlags = BindFlags.RenderTarget,
}))
using (var surface = texture.QueryInterface<Surface>())
using (var resource = texture.QueryInterface<SharpDX.DXGI.Resource>())
{
_resource = texture.QueryInterface<SharpDX.Direct3D11.Resource>();
var handle = resource.SharedHandle;
using (var texture9 = new Texture(s_d3DDevice, texture.Description.Width,
texture.Description.Height, 1,
Usage.RenderTarget, SharpDX.Direct3D9.Format.A8R8G8B8, Pool.Default, ref handle))
Texture = texture9.GetSurfaceLevel(0);
Target = new RenderTarget(AvaloniaLocator.Current.GetService<SharpDX.Direct2D1.Factory>(), surface,
new RenderTargetProperties
{
@ -72,16 +70,25 @@ namespace Avalonia.Win32.Interop.Wpf
}
using (var texture = new Texture2D(s_dxDevice, new Texture2DDescription
{
Width = Math.Min(width, 16),
Height = Math.Min(height, 16),
Width = width,
Height = height,
ArraySize = 1,
MipLevels = 1,
Format = Format.B8G8R8A8_UNorm,
Usage = ResourceUsage.Staging,
Usage = ResourceUsage.Default,
SampleDescription = new SampleDescription(1, 0),
CpuAccessFlags = CpuAccessFlags.Read
BindFlags = BindFlags.RenderTarget|BindFlags.ShaderResource,
OptionFlags = ResourceOptionFlags.Shared,
}))
_stagingResource = texture.QueryInterface<SharpDX.Direct3D11.Resource>();
using (var resource = texture.QueryInterface<SharpDX.DXGI.Resource>())
{
_sharedResource = texture.QueryInterface<SharpDX.Direct3D11.Resource>();
var handle = resource.SharedHandle;
using (var texture9 = new Texture(s_d3DDevice, texture.Description.Width,
texture.Description.Height, 1,
Usage.RenderTarget, SharpDX.Direct3D9.Format.A8R8G8B8, Pool.Default, ref handle))
Texture = texture9.GetSurfaceLevel(0);
}
Size = size;
}
@ -90,21 +97,20 @@ namespace Avalonia.Win32.Interop.Wpf
Texture?.Dispose();
Target?.Dispose();
_resource?.Dispose();
_stagingResource?.Dispose();
_sharedResource?.Dispose();
}
public void Flush()
{
s_dxDevice.ImmediateContext.CopySubresourceRegion(_resource, 0,
new ResourceRegion(0, 0, 0, 1, 1, 1), _stagingResource, 0, 0, 0, 0);
s_dxDevice.ImmediateContext.MapSubresource(_stagingResource, 0, MapMode.Read, MapFlags.None);
s_dxDevice.ImmediateContext.UnmapSubresource(_stagingResource, 0);
s_dxDevice.ImmediateContext.ResolveSubresource(_resource, 0, _sharedResource, 0, Format.B8G8R8A8_UNorm);
s_dxDevice.ImmediateContext.Flush();
s_dxDevice.ImmediateContext.End(_event);
s_dxDevice.ImmediateContext.GetData(_event).Dispose();
}
}
private D3DImage _image;
private SwapBuffer _backBuffer;
private SwapBuffer _frontBuffer;
private readonly WpfTopLevelImpl _impl;
private static Device s_dxDevice;
private static Direct3DEx s_d3DContext;
@ -154,7 +160,6 @@ namespace Avalonia.Win32.Interop.Wpf
RemoveAndDispose(ref _backBuffer);
if (size == default(Size))
{
RemoveAndDispose(ref _frontBuffer);
_image.Lock();
_image.SetBackBuffer(D3DResourceType.IDirect3DSurface9, IntPtr.Zero);
_image.Unlock();
@ -173,12 +178,9 @@ namespace Avalonia.Win32.Interop.Wpf
void Swap()
{
var oldFront = _frontBuffer;
_frontBuffer = _backBuffer;
_backBuffer = oldFront;
_frontBuffer.Flush();
_backBuffer.Flush();
_image.Lock();
_image.SetBackBuffer(D3DResourceType.IDirect3DSurface9, _frontBuffer?.Texture?.NativePointer ?? IntPtr.Zero, true);
_image.SetBackBuffer(D3DResourceType.IDirect3DSurface9, _backBuffer?.Texture?.NativePointer ?? IntPtr.Zero, true);
_image.AddDirtyRect(new Int32Rect(0, 0, _image.PixelWidth, _image.PixelHeight));
_image.Unlock();
}
@ -186,8 +188,6 @@ namespace Avalonia.Win32.Interop.Wpf
public void DestroyRenderTarget()
{
RemoveAndDispose(ref _backBuffer);
RemoveAndDispose(ref _frontBuffer);
//?
}
public void BeforeDrawing()
@ -198,7 +198,6 @@ namespace Avalonia.Win32.Interop.Wpf
public void AfterDrawing() => Swap();
public void Dispose()
{
RemoveAndDispose(ref _frontBuffer);
RemoveAndDispose(ref _backBuffer);
}
}

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