Svg.filter.draw.tiles: def of gralha-svg-render@0.1.0.1
Import: import gralha-svg-render@0.1.0.1/svg.bend as Svg
Lines 4798-4809 of gralha-svg-render@0.1.0.1/svg.bend: https://jend.leeeet.dev/read.txt?path=gralha-svg-render@0.1.0.1/svg.bend&start_line=4798&end_line=4809

import Base
import gralha-text-scan@0.1.0.1/scan.bend as U
import gralha-image@0.1.0.1/image.bend as Img

def filter.draw.tiles(depth: Nat, +x: U32, +y: U32, +format: Raster, +op: FilterOp, +a: FilterInput, +b: FilterInput, +window: FilterWindow, +linear: Bool, +aa: U32) -> Img.Pixels:
  match depth:
    case 0n:
      +span = filter.window.span(window, raster.tile.box(format, x, y, 1))
      U.branch(Img.Pixels, raster.in.frame(format, x, y) && Bool.not(U32.is_eq(span, 0)),
        _ => filter.draw.pixel(format, x, y, op, a, b, window, linear, aa, span), _ => Img.Flat{Img.clear()})
    case 1n+d:
      +dd = d
      +half = U32.shln(1, dd)
      +span = filter.window.span(window, raster.tile.box(format, x, y, (half * 2 : U32)))
      U.branch(Img.Pixels, raster.in.frame(format, x, y) && Bool.not(U32.is_eq(span, 0)),
        _ => Img.pixels.join(filter.draw.tiles(dd, x, y, format, op, a, b, window, linear, aa), filter.draw.tiles(dd, (x + half : U32), y, format, op, a, b, window, linear, aa), filter.draw.tiles(dd, x, (y + half : U32), format, op, a, b, window, linear, aa), filter.draw.tiles(dd, (x + half : U32), (y + half : U32), format, op, a, b, window, linear, aa)), _ => Img.Flat{Img.clear()})

Uses (21):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.mul
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.shln
  https://jend.leeeet.dev/definition.txt?path=gralha-image@0.1.0.1/image.bend&name=Pixels
  https://jend.leeeet.dev/definition.txt?path=gralha-image@0.1.0.1/image.bend&name=clear
  https://jend.leeeet.dev/definition.txt?path=gralha-image@0.1.0.1/image.bend&name=pixels.join
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=FilterInput
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=FilterOp
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=FilterWindow
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=Raster
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=filter.draw.pixel
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=filter.window.span
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=raster.in.frame
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=raster.tile.box
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=branch