From 354b94596cbdb852945d3eab1257fb9b081f666c Mon Sep 17 00:00:00 2001
From: Viktor Lidholt <viktorl@google.com>
Date: Tue, 4 Aug 2015 10:14:49 -0700
Subject: [PATCH 1/2] Disables anti alias for sprite drawing

---
 sky/packages/sky/example/game/lib/sprite.dart | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sky/packages/sky/example/game/lib/sprite.dart b/sky/packages/sky/example/game/lib/sprite.dart
index d040164eff9..b9d382b4857 100644
--- a/sky/packages/sky/example/game/lib/sprite.dart
+++ b/sky/packages/sky/example/game/lib/sprite.dart
@@ -29,7 +29,9 @@ class Sprite extends NodeWithSize {
   ///     mySprite.transferMode = TransferMode.plusMode;
   TransferMode transferMode;
 
-  Paint _cachedPaint = new Paint();
+  Paint _cachedPaint = new Paint()
+    ..setFilterQuality(FilterQuality.low)
+    ..isAntiAlias = false;
 
   /// Creates a new sprite from the provided [texture].
   ///

From 042bbdbae5634fdb4c52817fc82236d4394a1578 Mon Sep 17 00:00:00 2001
From: Viktor Lidholt <viktorl@google.com>
Date: Tue, 4 Aug 2015 10:16:06 -0700
Subject: [PATCH 2/2] Optimizes texture drawing by removing a canvas.translate
 call

---
 .../sky/example/game/lib/texture.dart         | 26 ++++++++++---------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/sky/packages/sky/example/game/lib/texture.dart b/sky/packages/sky/example/game/lib/texture.dart
index e8068784bcf..39cc70e0829 100644
--- a/sky/packages/sky/example/game/lib/texture.dart
+++ b/sky/packages/sky/example/game/lib/texture.dart
@@ -74,17 +74,18 @@ class Texture {
   }
 
   void drawTexture(PaintingCanvas canvas, Point position, Paint paint) {
-
-    // Account for position
+    // Get drawing position
     double x = position.x;
     double y = position.y;
-    bool translate = (x != 0 || y != 0);
-    if (translate) {
-      canvas.translate(x, y);
-    }
 
     // Draw the texture
     if (rotated) {
+      // Account for position
+      bool translate = (x != 0 || y != 0);
+      if (translate) {
+        canvas.translate(x, y);
+      }
+
       // Calculate the rotated frame and spriteSourceSize
       Size originalFrameSize = frame.size;
       Rect rotatedFrame = frame.topLeft & new Size(originalFrameSize.height, originalFrameSize.width);
@@ -97,14 +98,15 @@ class Texture {
       canvas.rotate(-math.PI/2.0);
       canvas.drawImageRect(image, rotatedFrame, rotatedSpriteSourceSize, paint);
       canvas.rotate(math.PI/2.0);
+
+      // Translate back
+      if (translate) {
+        canvas.translate(-x, -y);
+      }
     } else {
       // Draw the sprite
-      canvas.drawImageRect(image, frame, spriteSourceSize, paint);
-    }
-
-    // Translate back
-    if (translate) {
-      canvas.translate(-x, -y);
+      Rect dstRect = new Rect.fromLTWH(x + spriteSourceSize.left, y + spriteSourceSize.top, spriteSourceSize.width, spriteSourceSize.height);
+      canvas.drawImageRect(image, frame, dstRect, paint);
     }
   }
 }