Instead of applying a transform for every RenderObject, pass down an Offset for where to paint.

sky/tests/raw/sector_layout-expected.txt

Index: sky/tests/raw/sector_layout-expected.txt
diff --git a/sky/tests/raw/sector_layout-expected.txt b/sky/tests/raw/sector_layout-expected.txt
index d8ee76650f6ac6ab3839b28c407618b21ef30c49..9ff7e892159386d0d15515bad002613cb5a2ac7a 100644
--- a/sky/tests/raw/sector_layout-expected.txt
+++ b/sky/tests/raw/sector_layout-expected.txt
@@ -6,21 +6,21 @@ PAINT FOR FRAME #1 ----------------------------------------------
 1 |  | TestRenderCanvas() constructor: 800.0 x 600.0
 1 |  | paintChild RenderSectorRing at Point(400.0, 300.0)
 1 |  |  | TestRenderCanvas() constructor: 800.0 x 600.0
-1 |  |  | paintChild RenderSolidColor at Point(0.0, 0.0)
+1 |  |  | paintChild RenderSolidColor at Point(400.0, 300.0)
 1 |  |  |  | TestRenderCanvas() constructor: 800.0 x 600.0
 1 |  |  |  | drawPath(Instance of 'Path', Paint(color:Color(0xff00ffff)))
-1 |  |  | paintChild RenderSolidColor at Point(0.0, 0.0)
+1 |  |  | paintChild RenderSolidColor at Point(400.0, 300.0)
 1 |  |  |  | TestRenderCanvas() constructor: 800.0 x 600.0
 1 |  |  |  | drawPath(Instance of 'Path', Paint(color:Color(0xff0000ff)))
-1 |  |  | paintChild RenderSectorSlice at Point(0.0, 0.0)
+1 |  |  | paintChild RenderSectorSlice at Point(400.0, 300.0)
 1 |  |  |  | TestRenderCanvas() constructor: 800.0 x 600.0
-1 |  |  |  | paintChild RenderSolidColor at Point(0.0, 0.0)
+1 |  |  |  | paintChild RenderSolidColor at Point(400.0, 300.0)
 1 |  |  |  |  | TestRenderCanvas() constructor: 800.0 x 600.0
 1 |  |  |  |  | drawPath(Instance of 'Path', Paint(color:Color(0xffffff00)))
-1 |  |  |  | paintChild RenderSolidColor at Point(0.0, 0.0)
+1 |  |  |  | paintChild RenderSolidColor at Point(400.0, 300.0)
 1 |  |  |  |  | TestRenderCanvas() constructor: 800.0 x 600.0
 1 |  |  |  |  | drawPath(Instance of 'Path', Paint(color:Color(0xffff9000)))
-1 |  |  |  | paintChild RenderSolidColor at Point(0.0, 0.0)
+1 |  |  |  | paintChild RenderSolidColor at Point(400.0, 300.0)
 1 |  |  |  |  | TestRenderCanvas() constructor: 800.0 x 600.0
 1 |  |  |  |  | drawPath(Instance of 'Path', Paint(color:Color(0xff00ff00)))
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