使用 ImageBrush 平铺时是否可以关闭抗锯齿？

Question

使用 ImageBrush 时是否可以在 WPF 中关闭抗锯齿功能？

给定以下代码：

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));

给我这样的东西：

但我期待：

WPF 的默认抗锯齿使它看起来很糟糕。我试过 UseLayoutRounding=true、SnapsToDevicePixels=true、RenderOptions.SetBitmapScalingMode(this, BitmapScalingMode.HighQuality)、 RenderOptions.SetBitmapScalingMode(this, BitmapScalingMode.NearestNeighbor) RenderOptions.SetEdgeMode(this, EdgeMode.Unspecified); 上 window。唯一改变任何视觉差异的是 BitmapScalingMode.NearestNeighbor，但它看起来仍然很奇怪，而且平铺自身重叠。

编辑：下载完整的工作示例：WpfImageBrushExample.zip

Answer 1

这里的问题是 BitmapImage 宽度和高度是不同的小数 - 在本例中是 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 问题就解决了，并且在任何这些渲染选项集下我都不会出现奇怪的别名。

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));

产生：

使用 ImageBrush 平铺时是否可以关闭抗锯齿？

Is it possible to turn off antialiasing when using ImageBrush tiling?

wpf

wpf-controls

antialiasing

imagebrush