Add fullscreen rect bench

bench/FSRectBench.cpp

+
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkBenchmark.h"
+#include "SkCanvas.h"
+#include "SkPaint.h"
+#include "SkRandom.h"
+

[robertphillips, 2013/08/01 17:50:14]

comment r.e. what it is supposed to hit?

[bsalomon, 2013/08/02 19:35:10]

Done.

+class FSRectBench : public SkBenchmark {
+public:
+    FSRectBench(void* param)
+        : INHERITED(param) {

[robertphillips, 2013/08/01 17:50:14]

MWC?

[bsalomon, 2013/08/02 19:35:10]

Done.

+        SkRandom rand;
+        static const SkScalar kMinOffset = 0;

[robertphillips, 2013/08/01 17:50:14]

Move this setup out of the ctor and into onPreDraw?

[bsalomon, 2013/08/02 19:35:10]

Done.

+        static const SkScalar kMaxOffset = 100 * SK_Scalar1;
+        static const SkScalar kOffsetRange = kMaxOffset - kMinOffset;

[robertphillips, 2013/08/01 17:50:14]

pre++?

[bsalomon, 2013/08/02 19:35:10]

Done.

+        for (int i = 0; i < N; i++) {
+            fRects[i].fLeft = -kMinOffset - SkScalarMul(rand.nextUScalar1(), kOffsetRange);
+            fRects[i].fTop = -kMinOffset - SkScalarMul(rand.nextUScalar1(), kOffsetRange);
+            fRects[i].fRight = W + kMinOffset + SkScalarMul(rand.nextUScalar1(), kOffsetRange);
+            fRects[i].fBottom = H + kMinOffset + SkScalarMul(rand.nextUScalar1(), kOffsetRange);
+            fColors[i] = rand.nextU() | 0xFF000000;
+        }
+    }
+
+protected:
+    virtual const char* onGetName() SK_OVERRIDE { return "fullscreen_rects"; }
+    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+        SkPaint paint;

[robertphillips, 2013/08/01 17:50:14]

pre++?

[bsalomon, 2013/08/02 19:35:10]

Done.

+        for (int i = 0; i < N; i++) {
+            paint.setColor(fColors[i]);
+            canvas->drawRect(fRects[i], paint);
+        }
+    }
+
+private:
+    enum {
+        W = 640,
+        H = 480,
+        N = SkBENCHLOOP(300)
+    };
+    SkRect  fRects[N];
+    SkColor fColors[N];
+
+    typedef SkBenchmark INHERITED;
+};
+
+DEF_BENCH( return SkNEW_ARGS(FSRectBench, (p)); )