From ea6f6832dd1c1af5db1a2ff43df627347b3fb8ab Mon Sep 17 00:00:00 2001
From: "reed@google.com" <reed@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81>
Date: Fri, 18 May 2012 18:32:54 +0000
Subject: [PATCH] add makedash_ variants to measure applying the dash (not
 drawing it)

git-svn-id: http://skia.googlecode.com/svn/trunk@4000 2bbb7eff-a529-9590-31e7-b0007b416f81
---
 bench/DashBench.cpp | 88 ++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 83 insertions(+), 5 deletions(-)

diff --git a/bench/DashBench.cpp b/bench/DashBench.cpp
index 3f2cfa785..e9969c47c 100644
--- a/bench/DashBench.cpp
+++ b/bench/DashBench.cpp
@@ -106,7 +106,7 @@ public:
     : INHERITED(param, intervals, count, width) {
         fName.append("_rect");
     }
-
+    
 protected:
     virtual void handlePath(SkCanvas* canvas, const SkPath& path,
                             const SkPaint& paint, int N) SK_OVERRIDE {
@@ -119,14 +119,14 @@ protected:
             rect.fTop = pts[0].fY - paint.getStrokeWidth() / 2;
             rect.fRight = rect.fLeft + SkIntToScalar(fWidth);
             rect.fBottom = rect.fTop + paint.getStrokeWidth();
-
+            
             SkPaint p(paint);
             p.setStyle(SkPaint::kFill_Style);
             p.setPathEffect(NULL);
-
+            
             int count = SkScalarRoundToInt((pts[1].fX - pts[0].fX) / (2*fWidth));
             SkScalar dx = SkIntToScalar(2 * fWidth);
-
+            
             for (int i = 0; i < N*10; ++i) {
                 SkRect r = rect;
                 for (int j = 0; j < count; ++j) {
@@ -141,6 +141,80 @@ private:
     typedef DashBench INHERITED;
 };
 
+static void make_unit_star(SkPath* path, int n) {
+    SkScalar rad = -SK_ScalarPI / 2;
+    const SkScalar drad = (n >> 1) * SK_ScalarPI * 2 / n;
+    
+    path->moveTo(0, -SK_Scalar1);
+    for (int i = 1; i < n; i++) {
+        rad += drad;
+        SkScalar cosV, sinV = SkScalarSinCos(rad, &cosV);
+        path->lineTo(cosV, sinV);
+    }
+    path->close();
+}
+
+static void make_poly(SkPath* path) {
+    make_unit_star(path, 9);
+    SkMatrix matrix;
+    matrix.setScale(SkIntToScalar(100), SkIntToScalar(100));
+    path->transform(matrix);
+}
+
+static void make_quad(SkPath* path) {
+    SkScalar x0 = SkIntToScalar(10);
+    SkScalar y0 = SkIntToScalar(10);
+    path->moveTo(x0, y0);
+    path->quadTo(x0,                    y0 + 400 * SK_Scalar1,
+                 x0 + 600 * SK_Scalar1, y0 + 400 * SK_Scalar1);
+}
+
+static void make_cubic(SkPath* path) {
+    SkScalar x0 = SkIntToScalar(10);
+    SkScalar y0 = SkIntToScalar(10);
+    path->moveTo(x0, y0);
+    path->cubicTo(x0,                    y0 + 400 * SK_Scalar1,
+                  x0 + 600 * SK_Scalar1, y0 + 400 * SK_Scalar1,
+                  x0 + 600 * SK_Scalar1, y0);
+}
+
+class MakeDashBench : public SkBenchmark {
+    SkString fName;
+    SkPath   fPath;
+    SkAutoTUnref<SkPathEffect> fPE;
+
+    enum {
+        N = SkBENCHLOOP(400)
+    };
+
+public:
+    MakeDashBench(void* param, void (*proc)(SkPath*), const char name[]) : INHERITED(param) {
+        fName.printf("makedash_%s", name);
+        proc(&fPath);
+        
+        SkScalar vals[] = { SkIntToScalar(4), SkIntToScalar(4) };
+        fPE.reset(new SkDashPathEffect(vals, 2, 0));
+    }
+
+protected:
+    virtual const char* onGetName() SK_OVERRIDE {
+        return fName.c_str();
+    }
+    
+    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+        SkPath dst;
+        for (int i = 0; i < N; ++i) {
+            SkScalar width = 0;
+            
+            fPE->filterPath(&dst, fPath, &width);
+            dst.rewind();
+        }
+    }
+    
+private:
+    typedef SkBenchmark INHERITED;
+};
+
 ///////////////////////////////////////////////////////////////////////////////
 
 static const SkScalar gDots[] = { SK_Scalar1, SK_Scalar1 };
@@ -151,10 +225,14 @@ static SkBenchmark* gF0(void* p) { return new DashBench(p, PARAM(gDots), 0); }
 static SkBenchmark* gF1(void* p) { return new DashBench(p, PARAM(gDots), 1); }
 static SkBenchmark* gF2(void* p) { return new DashBench(p, PARAM(gDots), 1, true); }
 static SkBenchmark* gF3(void* p) { return new DashBench(p, PARAM(gDots), 4); }
-static SkBenchmark* gF4(void* p) { return new RectDashBench(p, PARAM(gDots), 4); }
+static SkBenchmark* gF4(void* p) { return new MakeDashBench(p, make_poly, "poly"); }
+static SkBenchmark* gF5(void* p) { return new MakeDashBench(p, make_quad, "quad"); }
+static SkBenchmark* gF6(void* p) { return new MakeDashBench(p, make_cubic, "cubic"); }
 
 static BenchRegistry gR0(gF0);
 static BenchRegistry gR1(gF1);
 static BenchRegistry gR2(gF2);
 static BenchRegistry gR3(gF3);
 static BenchRegistry gR4(gF4);
+static BenchRegistry gR5(gF5);
+static BenchRegistry gR6(gF6);