Improvements to game performance tests (adds 2 new tests to check sprite curl performance)

packages/flutter/example/game/test_performance.dart

@@ -56,7 +56,7 @@ class TestApp extends App {
 
 class TestPerformance extends NodeWithSize {
   final int numFramesPerTest = 100;
-  final int numTests = 3;
+  final int numTests = 5;
 
   TestPerformance() : super(new Size(1024.0, 1024.0)) {
   }
@@ -73,7 +73,7 @@ class TestPerformance extends NodeWithSize {
         int totalTestTime = currentTime - testStartTime;
         double millisPerFrame =
           totalTestTime.toDouble() / numFramesPerTest.toDouble();
-        print("TEST ${test - 1} fps: ${1.0 / (millisPerFrame / 1000)}");
+        print("  - RESULT fps: ${(1.0 / (millisPerFrame / 1000)).toStringAsFixed(1)} millis/frame: ${millisPerFrame.round()}");
 
         // Clear test
         removeAllChildren();
@@ -81,8 +81,11 @@ class TestPerformance extends NodeWithSize {
 
       if (test < numTests) {
         // Start new test
-        print("TEST $test STARTING");
-        setupTest(test);
+        PerformanceTest perfTest = createTest(test);
+        addChild(perfTest);
+
+        print("TEST ${test + 1}/$numTests STARTING: ${perfTest.name}");
+
         testStartTime = new DateTime.now().millisecondsSinceEpoch;
       }
       test++;
@@ -90,21 +93,34 @@ class TestPerformance extends NodeWithSize {
     frame++;
   }
 
-  void setupTest(int n) {
+  PerformanceTest createTest(int n) {
     if (test == 0) {
       // Test atlas performance
-      addChild(new TestPerformanceAtlas());
+      return new TestPerformanceAtlas();
     } else if (test == 1) {
-      // Test sprite performance
-      addChild(new TestPerformanceSprites());
+      // Test atlas performance
+      return new TestPerformanceAtlas2();
     } else if (test == 2) {
+      // Test sprite performance
+      return new TestPerformanceSprites();
+    } else if (test == 3) {
+      // Test sprite performance
+      return new TestPerformanceSprites2();
+    } else if (test == 4) {
       // Test particle performance
-      addChild(new TestPerformanceParticles());
+      return new TestPerformanceParticles();
     }
+    return null;
   }
 }
 
-class TestPerformanceParticles extends Node {
+abstract class PerformanceTest extends Node {
+  String get name;
+}
+
+class TestPerformanceParticles extends PerformanceTest {
+  String get name => "64 particle systems";
+
   final grid = 8;
   TestPerformanceParticles() {
     for (int x = 0; x < grid; x++) {
@@ -130,7 +146,9 @@ class TestPerformanceParticles extends Node {
   }
 }
 
-class TestPerformanceSprites extends Node {
+class TestPerformanceSprites extends PerformanceTest {
+  String get name => "1001 sprites (24% offscreen)";
+
   final int grid = 100;
 
   TestPerformanceSprites() {
@@ -157,7 +175,38 @@ class TestPerformanceSprites extends Node {
   }
 }
 
-class TestPerformanceAtlas extends Node {
+class TestPerformanceSprites2 extends PerformanceTest {
+  String get name => "1001 sprites (24% offscreen never added)";
+
+  final int grid = 100;
+
+  TestPerformanceSprites2() {
+    for (int x = 12; x < grid - 12; x++) {
+      for (int y = 0; y < grid; y++) {
+        Sprite sprt = new Sprite(_spriteSheet["asteroid_big_1.png"]);
+        sprt.scale = 1.0;
+        sprt.position = new Point(x * 1024.0 / (grid - 1), y * 1024.0 / (grid - 1));
+        addChild(sprt);
+
+        //sprt.actions.run(new ActionRepeatForever(new ActionTween((a) => sprt.rotation = a, 0.0, 360.0, 1.0)));
+      }
+    }
+
+    Sprite sprt = new Sprite(_spriteSheet["asteroid_big_1.png"]);
+    sprt.position = new Point(512.0, 512.0);
+    addChild(sprt);
+  }
+
+  void update(double dt) {
+    for (Sprite sprt in children) {
+      sprt.rotation += 1;
+    }
+  }
+}
+
+class TestPerformanceAtlas extends PerformanceTest {
+  String get name => "1001 rects drawAtlas (24% offscreen)";
+
   final int grid = 100;
 
   double rotation = 0.0;
@@ -207,3 +256,56 @@ class TestPerformanceAtlas extends Node {
     return new sky.RSTransform(scos, ssin, tx, ty);
   }
 }
+
+class TestPerformanceAtlas2 extends PerformanceTest {
+  String get name => "1001 rects drawAtlas (24% offscreen never added)";
+
+  final int grid = 100;
+
+  double rotation = 0.0;
+  List<Rect> rects = [];
+  Paint cachedPaint = new Paint()
+    ..setFilterQuality(sky.FilterQuality.low)
+    ..isAntiAlias = false;
+
+  TestPerformanceAtlas2() {
+    for (int x = 12; x < grid - 12; x++) {
+      for (int y = 0; y < grid; y++) {
+        rects.add(_spriteSheet["asteroid_big_1.png"].frame);
+      }
+    }
+    rects.add(_spriteSheet["asteroid_big_1.png"].frame);
+  }
+
+  void paint(PaintingCanvas canvas) {
+    // Setup transforms
+    List<sky.RSTransform> transforms = [];
+
+    for (int x = 12; x < grid - 12; x++) {
+      for (int y = 0; y < grid; y++) {
+        double xPos = x * 1024.0 / (grid - 1);
+        double yPos = y * 1024.0 / (grid - 1);
+
+        transforms.add(createTransform(xPos, yPos, rects[0].size.width / 2.0, rects[0].size.height / 2.0, rotation, 1.0));
+      }
+    }
+
+    transforms.add(createTransform(512.0, 512.0, rects[0].size.width / 2.0, rects[0].size.height / 2.0, rotation, 1.0));
+
+    // Draw atlas
+    Rect cullRect = spriteBox.visibleArea;
+    canvas.drawAtlas(_spriteSheet.image, transforms, rects, null, null, cullRect, cachedPaint);
+  }
+
+  void update(double dt) {
+    rotation += 1.0;
+  }
+
+  sky.RSTransform createTransform(double x, double y, double ax, double ay, double rot, double scale) {
+    double scos = math.cos(convertDegrees2Radians(rot)) * scale;
+    double ssin = math.sin(convertDegrees2Radians(rot)) * scale;
+    double tx = x + -scos * ax + ssin * ay;
+    double ty = y + -ssin * ax - scos * ay;
+    return new sky.RSTransform(scos, ssin, tx, ty);
+  }
+}