[FEATURE] Expose SkCanvas::SaveLayerRec API #2773
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This is also needed to make ClearType work with layering. Otherwise parameters like pixel geometry or sub pixel text are not preserved for the created layer. |
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@mattleibow What are the chances we can have this in SkiaSharp 3? |
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It does not require too much work. The native layer needs to expose the missing API and a new struct needs to be mapped. |
This was referenced Jul 30, 2024
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@Gillibald @Youssef1313 @ahmed605 I have updated the PRs, let me know if the class-based API will work. Do you see any issues with this? |
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Is your feature request related to a problem?
SkCanvas::SaveLayerRecis missing from SkiaSharp's API surface, this API is very useful for implementing backdrop effects/filters, we need this API in order to implement CompositionBackdropBrush properly in Uno Platform.Describe the solution you would like
It would be great if
SkCanvas::SaveLayerRecgot exposed in SkiaSharpDescribe alternatives you have considered
We currently use a combination of
SKCanvas.SaveLayer(SKPaint),SKCanvas.DrawSurface(SKSurface, SKRect), andSKCanvas.Restore()as a workaround, but it isn't ideal and has few issues (e.g. need to downscale the canvas manually, no custom clipping, slower since it's not optimized for backdrop effects unlikeSkCanvas::SaveLayerRec, image filter of SKPaint isn't fully applied to the saved region (due to scaling miscalculations?), etc...)Additional context
No response
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