add bench for building blurs

git-svn-id: http://skia.googlecode.com/svn/trunk@1865 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 84 insertions, 0 deletions

diff --git a/bench/BlurBench.cpp b/bench/BlurBench.cpp
new file mode 100644
index 0000000000..9d71ca3f57
--- /dev/null
+++ b/bench/BlurBench.cpp
@@ -0,0 +1,84 @@
+#include "SkBenchmark.h"
+#include "SkCanvas.h"
+#include "SkPaint.h"
+#include "SkRandom.h"
+#include "SkShader.h"
+#include "SkString.h"
+#include "SkBlurMaskFilter.h"
+
+#define SMALL   SkIntToScalar(2)
+#define BIG     SkIntToScalar(10)
+
+static const char* gStyleName[] = {
+    "normal",
+    "solid",
+    "outer",
+    "inner"
+};
+
+class BlurBench : public SkBenchmark {
+    SkScalar    fRadius;
+    SkBlurMaskFilter::BlurStyle fStyle;
+    SkString    fName;
+
+public:
+    BlurBench(void* param, SkScalar rad, SkBlurMaskFilter::BlurStyle bs) : INHERITED(param) {
+        fRadius = rad;
+        fStyle = bs;
+        const char* name = rad > 0 ? gStyleName[bs] : "none";
+        fName.printf("blur_%g_%s", rad, name);
+    }
+    
+protected:
+    virtual const char* onGetName() {
+        return fName.c_str();
+    }
+    
+    virtual void onDraw(SkCanvas* canvas) {
+        SkPaint paint;
+        this->setupPaint(&paint);
+
+        paint.setAntiAlias(true);
+
+        SkRandom rand;
+        for (int i = 0; i < 10; i++) {
+            SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
+                                      rand.nextUScalar1() * 400);
+            r.offset(fRadius, fRadius);
+
+            if (fRadius > 0) {
+                SkMaskFilter* mf = SkBlurMaskFilter::Create(fRadius, fStyle, 0);
+                paint.setMaskFilter(mf)->unref();
+            }
+            canvas->drawOval(r, paint);
+        }
+    }
+    
+private:
+    typedef SkBenchmark INHERITED;
+};
+
+static SkBenchmark* Fact00(void* p) { return new BlurBench(p, SMALL, SkBlurMaskFilter::kNormal_BlurStyle); }
+static SkBenchmark* Fact01(void* p) { return new BlurBench(p, SMALL, SkBlurMaskFilter::kSolid_BlurStyle); }
+static SkBenchmark* Fact02(void* p) { return new BlurBench(p, SMALL, SkBlurMaskFilter::kOuter_BlurStyle); }
+static SkBenchmark* Fact03(void* p) { return new BlurBench(p, SMALL, SkBlurMaskFilter::kInner_BlurStyle); }
+
+static SkBenchmark* Fact10(void* p) { return new BlurBench(p, BIG, SkBlurMaskFilter::kNormal_BlurStyle); }
+static SkBenchmark* Fact11(void* p) { return new BlurBench(p, BIG, SkBlurMaskFilter::kSolid_BlurStyle); }
+static SkBenchmark* Fact12(void* p) { return new BlurBench(p, BIG, SkBlurMaskFilter::kOuter_BlurStyle); }
+static SkBenchmark* Fact13(void* p) { return new BlurBench(p, BIG, SkBlurMaskFilter::kInner_BlurStyle); }
+
+static SkBenchmark* FactNone(void* p) { return new BlurBench(p, 0, SkBlurMaskFilter::kNormal_BlurStyle); }
+
+static BenchRegistry gReg00(Fact00);
+static BenchRegistry gReg01(Fact01);
+static BenchRegistry gReg02(Fact02);
+static BenchRegistry gReg03(Fact03);
+
+static BenchRegistry gReg10(Fact10);
+static BenchRegistry gReg11(Fact11);
+static BenchRegistry gReg12(Fact12);
+static BenchRegistry gReg13(Fact13);
+
+static BenchRegistry gRegNone(FactNone);
+