FontScalerBench.cpp revision 3361471a3504ecd0351ff70f4c42d8d6fee963d4 
1/*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "SkBenchmark.h"
9#include "SkCanvas.h"
10#include "SkGraphics.h"
11#include "SkPaint.h"
12#include "SkRandom.h"
13#include "SkString.h"
14
15extern bool gSkSuppressFontCachePurgeSpew;
16
17class FontScalerBench : public SkBenchmark {
18    SkString fName;
19    SkString fText;
20    bool     fDoLCD;
21public:
22    FontScalerBench(bool doLCD)  {
23        fName.printf("fontscaler_%s", doLCD ? "lcd" : "aa");
24        fText.set("abcdefghijklmnopqrstuvwxyz01234567890");
25        fDoLCD = doLCD;
26    }
27
28protected:
29    virtual const char* onGetName() { return fName.c_str(); }
30    virtual void onDraw(const int loops, SkCanvas* canvas) {
31        SkPaint paint;
32        this->setupPaint(&paint);
33        paint.setLCDRenderText(fDoLCD);
34
35        bool prev = gSkSuppressFontCachePurgeSpew;
36        gSkSuppressFontCachePurgeSpew = true;
37
38        for (int i = 0; i < loops; i++) {
39            // this is critical - we want to time the creation process, so we
40            // explicitly flush our cache before each run
41            SkGraphics::PurgeFontCache();
42
43            for (int ps = 9; ps <= 24; ps += 2) {
44                paint.setTextSize(SkIntToScalar(ps));
45                canvas->drawText(fText.c_str(), fText.size(),
46                        0, SkIntToScalar(20), paint);
47            }
48        }
49
50        gSkSuppressFontCachePurgeSpew = prev;
51    }
52private:
53    typedef SkBenchmark INHERITED;
54};
55
56///////////////////////////////////////////////////////////////////////////////
57
58DEF_BENCH( return SkNEW_ARGS(FontScalerBench, (false)); )
59DEF_BENCH( return SkNEW_ARGS(FontScalerBench, (true)); )
60