DeferredCanvasBench.cpp revision cb6222499625e78190a58e5a7df3ef8cc8e40f7a 
1/*
2 * Copyright 2012 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#include "SkBenchmark.h"
8#include "SkDeferredCanvas.h"
9#include "SkDevice.h"
10#include "SkString.h"
11
12class DeferredCanvasBench : public SkBenchmark {
13public:
14    DeferredCanvasBench(void* param, const char name[]) : INHERITED(param) {
15        fName.printf("deferred_canvas_%s", name);
16    }
17
18    enum {
19        N = SkBENCHLOOP(25), // number of times to create the picture
20        CANVAS_WIDTH = 200,
21        CANVAS_HEIGHT = 200,
22    };
23protected:
24    virtual const char* onGetName() {
25        return fName.c_str();
26    }
27
28    virtual void onDraw(SkCanvas* canvas) {
29        SkDevice *device = canvas->getDevice()->createCompatibleDevice(
30            SkBitmap::kARGB_8888_Config, CANVAS_WIDTH, CANVAS_HEIGHT, false);
31
32        SkAutoTUnref<SkDeferredCanvas> deferredCanvas(SkDeferredCanvas::Create(device));
33        device->unref();
34
35        initDeferredCanvas(deferredCanvas);
36
37        for (int i = 0; i < N; i++) {
38            drawInDeferredCanvas(deferredCanvas);
39        }
40
41        finalizeDeferredCanvas(deferredCanvas);
42        deferredCanvas->flush();
43    }
44
45    virtual void initDeferredCanvas(SkDeferredCanvas* canvas) = 0;
46    virtual void drawInDeferredCanvas(SkDeferredCanvas* canvas) = 0;
47    virtual void finalizeDeferredCanvas(SkDeferredCanvas* canvas) = 0;
48
49    SkString fName;
50
51private:
52    typedef SkBenchmark INHERITED;
53};
54
55class SimpleNotificationClient : public SkDeferredCanvas::NotificationClient {
56public:
57    SimpleNotificationClient() : fDummy(false) {}
58
59    //bogus virtual implementations that just do something small
60    virtual void prepareForDraw() SK_OVERRIDE {fDummy = true;}
61    virtual void storageAllocatedForRecordingChanged(size_t) SK_OVERRIDE {fDummy = false;}
62    virtual void flushedDrawCommands() SK_OVERRIDE {fDummy = !fDummy;}
63private:
64    bool fDummy;
65
66    typedef SkDeferredCanvas::NotificationClient INHERITED;
67};
68
69// Test that records very simple draw operations.
70// This benchmark aims to capture performance fluctuations in the recording
71// overhead of SkDeferredCanvas
72class DeferredRecordBench : public DeferredCanvasBench {
73public:
74    DeferredRecordBench(void* param)
75        : INHERITED(param, "record") {
76    }
77
78    enum {
79        M = SkBENCHLOOP(700),   // number of individual draws in each loop
80    };
81protected:
82
83    virtual void initDeferredCanvas(SkDeferredCanvas* canvas) SK_OVERRIDE {
84        canvas->setNotificationClient(&fNotificationClient);
85    }
86
87    virtual void drawInDeferredCanvas(SkDeferredCanvas* canvas) SK_OVERRIDE {
88        SkRect rect;
89        rect.setXYWH(0, 0, 10, 10);
90        SkPaint paint;
91        for (int i = 0; i < M; i++) {
92            canvas->save(SkCanvas::kMatrixClip_SaveFlag);
93            canvas->translate(SkIntToScalar(i * 27 % CANVAS_WIDTH), SkIntToScalar(i * 13 % CANVAS_HEIGHT));
94            canvas->drawRect(rect, paint);
95            canvas->restore();
96        }
97    }
98
99    virtual void finalizeDeferredCanvas(SkDeferredCanvas* canvas) SK_OVERRIDE {
100        canvas->clear(0x0);
101        canvas->setNotificationClient(NULL);
102    }
103
104private:
105    typedef DeferredCanvasBench INHERITED;
106    SimpleNotificationClient fNotificationClient;
107};
108
109
110///////////////////////////////////////////////////////////////////////////////
111
112static SkBenchmark* Fact0(void* p) { return new DeferredRecordBench(p); }
113
114static BenchRegistry gReg0(Fact0);
115