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我正在使用 捕获屏幕SharpDX，处理更改并复制到暂存纹理以便稍后保存。

当源屏幕旋转（纵向）时，源纹理不会旋转（文档也这么说）。如何快速旋转纹理并放入我的暂存纹理？

这是我的代码（暂时忽略 Moved Rectangles 部分，稍后我将不得不应用相同的内容）：

using (var screenTexture = resource.QueryInterface<Texture2D>())
{
    #region Moved rectangles (ignore it for now)

    var movedRectangles = new OutputDuplicateMoveRectangle[info.TotalMetadataBufferSize];
    DuplicatedOutput.GetFrameMoveRects(movedRectangles.Length, movedRectangles, out var movedRegionsLength);

    for (var movedIndex = 0; movedIndex < movedRegionsLength / Marshal.SizeOf(typeof(OutputDuplicateMoveRectangle)); movedIndex++)
    {                            
        //Crop the destination rectangle to the screen area rectangle.
        var left = Math.Max(movedRectangles[movedIndex].DestinationRect.Left, Left);
        var right = Math.Min(movedRectangles[movedIndex].DestinationRect.Right, Left + Width);
        var top = Math.Max(movedRectangles[movedIndex].DestinationRect.Top, Top);
        var bottom = Math.Min(movedRectangles[movedIndex].DestinationRect.Bottom, Top + Height);

        //Copies from the screen texture only the area which the user wants to capture.
        if (right > left && bottom > top)
        {
            //Limit the source rectangle to the available size within the destination rectangle.
            var sourceWidth = movedRectangles[movedIndex].SourcePoint.X + (right - left);
            var sourceHeight = movedRectangles[movedIndex].SourcePoint.Y + (bottom - top);

            Device.ImmediateContext.CopySubresourceRegion(screenTexture, 0, new ResourceRegion(movedRectangles[movedIndex].SourcePoint.X, movedRectangles[movedIndex].SourcePoint.Y, 0, sourceWidth, sourceHeight, 1), 
                BackingTexture, 0, left - Left, top - Top);
        }
    }

    #endregion

    #region Dirty rectangles

    var dirtyRectangles = new RawRectangle[info.TotalMetadataBufferSize];
    DuplicatedOutput.GetFrameDirtyRects(dirtyRectangles.Length, dirtyRectangles, out var dirtyRegionsLength);
    
    for (var dirtyIndex = 0; dirtyIndex < dirtyRegionsLength / Marshal.SizeOf(typeof(RawRectangle)); dirtyIndex++)
    {       
        //OffsetTop and OffsetLeft are the bounds of the screen 
        //(where the screen is located within the virtual space).
        //Top and Left is the capture position.

        //Crop screen positions and size to frame sizes.
        var left = Math.Max(dirtyRectangles[dirtyIndex].Left, Left - OffsetLeft);
        var right = Math.Min(dirtyRectangles[dirtyIndex].Right, Left + Width - OffsetLeft);
        var top = Math.Max(dirtyRectangles[dirtyIndex].Top, Top - OffsetTop);
        var bottom = Math.Min(dirtyRectangles[dirtyIndex].Bottom, Top + Height - OffsetTop);

        //Copies from the screen texture only the area which the user wants to capture.
        if (right > left && bottom > top)
            Device.ImmediateContext.CopySubresourceRegion(screenTexture, 0, new ResourceRegion(left, top, 0, right, bottom, 1), BackingTexture, 0, left - (Left - OffsetLeft), top - (Top - OffsetTop));
    }

    #endregion
}

据我了解，dirtyRectangles数组给出的界限和screenTexture被旋转了。

获得正确位置后，我必须先旋转纹理，然后再尝试复制到我的BackingTexture.

我BackingTexture的创建是这样的：


BackingTexture = new Texture2D(Device, new Texture2DDescription
{
    ArraySize = 1,
    BindFlags = BindFlags.RenderTarget | BindFlags.ShaderResource,
    CpuAccessFlags = CpuAccessFlags.None,
    Format = Format.B8G8R8A8_UNorm,
    Width = Width,
    Height = Height,
    OptionFlags = ResourceOptionFlags.None,
    MipLevels = 1,
    SampleDescription = new SampleDescription(1, 0),
    Usage = ResourceUsage.Default
});
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