使用ImageBrush拼贴是否可以关闭抗锯齿？

Question

使用ImageBrush时是否可以在WPF中关闭抗锯齿？

给出以下代码：

var handleImage = new BitmapImage(new Uri($"pack://application:,,,/Resources/myimage.png"));
var imageBrush = new ImageBrush(handleImage);
imageBrush.AlignmentY = AlignmentY.Top;
imageBrush.AlignmentX = AlignmentX.Left;
imageBrush.Stretch = Stretch.Uniform;
imageBrush.Viewport = new Rect(0, 0, _handleImage.Width, _handleImage.Height);
imageBrush.ViewportUnits = BrushMappingMode.Absolute;
imageBrush.TileMode = TileMode.Tile;
drawingContext.DrawRectangle(imageBrush, null, new Rect(0, 0, width, height));

给我类似：

但是我期望：

WPF的默认抗锯齿效果使它看起来很糟糕。我尝试过UseLayoutRounding=true，SnapsToDevicePixels=true，RenderOptions.SetBitmapScalingMode(this, BitmapScalingMode.HighQuality)，窗口上的RenderOptions.SetBitmapScalingMode(this, BitmapScalingMode.NearestNeighbor) RenderOptions.SetEdgeMode(this, EdgeMode.Unspecified);。唯一可以改变视觉差异的是BitmapScalingMode.NearestNeighbor，但看起来仍然很奇怪，并且拼贴重叠。

编辑：下载完整的工作示例：WpfImageBrushExample.zip

Answer 1

这里的问题是BitmapImage的宽度和高度是不同的小数-在这种情况下，它是5.333 x 6x666而不是预期的4 x 5像素。如果我使用_handleImage.PixelWidth和_handleImage.PixelHeight，则此问题已解决，并且在设置的任何这些渲染选项下都不会出现怪异的别名。

var handleImage = new BitmapImage(new Uri($"pack://application:,,,/Resources/myimage.png"));
var imageBrush = new ImageBrush(handleImage);
imageBrush.AlignmentY = AlignmentY.Top;
imageBrush.AlignmentX = AlignmentX.Left;
imageBrush.Stretch = Stretch.Uniform;
imageBrush.Viewport = new Rect(0, 0, _handleImage.PixelWidth, _handleImage.PixelHeight);
imageBrush.ViewportUnits = BrushMappingMode.Absolute;
imageBrush.TileMode = TileMode.Tile;
drawingContext.DrawRectangle(imageBrush, null, new Rect(0, 0, width, height));

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