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Merge pull request #2318 from AvaloniaUI/fixes/2015-snap-dirty-rects
Snap dirty rects in DeferredRenderer to device pixels.
pull/2366/head
Steven Kirk
8 years ago
committed by
GitHub
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with
15 additions and
3 deletions
-
src/Avalonia.Visuals/Rendering/DeferredRenderer.cs
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@ -393,24 +393,36 @@ namespace Avalonia.Rendering |
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} |
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else |
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{ |
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var scale = scene.Scaling; |
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foreach (var rect in layer.Dirty) |
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{ |
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var snappedRect = SnapToDevicePixels(rect, scale); |
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context.Transform = Matrix.Identity; |
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context.PushClip(rect); |
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context.PushClip(snappedRect); |
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context.Clear(Colors.Transparent); |
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Render(context, node, layer.LayerRoot, rect); |
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Render(context, node, layer.LayerRoot, snappedRect); |
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context.PopClip(); |
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if (DrawDirtyRects) |
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{ |
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_dirtyRectsDisplay.Add(rect); |
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_dirtyRectsDisplay.Add(snappedRect); |
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} |
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} |
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} |
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} |
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} |
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} |
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} |
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private static Rect SnapToDevicePixels(Rect rect, double scale) |
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{ |
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return new Rect( |
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Math.Floor(rect.X * scale) / scale, |
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Math.Floor(rect.Y * scale) / scale, |
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Math.Ceiling(rect.Width * scale) / scale, |
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Math.Ceiling(rect.Height * scale) / scale); |
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} |
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private void RenderOverlay(Scene scene, IDrawingContextImpl parentContent) |
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