xref: /third_party/skia/bench/ReadPixBench.cpp (revision cb93a386) 
1/*
2 * Copyright 2012 The Android Open Source Project
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 "bench/Benchmark.h"
9#include "include/core/SkBitmap.h"
10#include "include/core/SkCanvas.h"
11#include "include/core/SkColorSpace.h"
12
13// Time variants of read-pixels
14//  [ colortype ][ alphatype ][ colorspace ]
15//  Different combinations can trigger fast or slow paths in the impls
16//
17class ReadPixBench : public Benchmark {
18public:
19    ReadPixBench(SkColorType ct, SkAlphaType at, sk_sp<SkColorSpace> cs)
20        : fCT(ct), fAT(at), fCS(cs)
21    {
22        fName.printf("readpix_%s_%s_%s",
23                     at == kPremul_SkAlphaType ? "pm" : "um",
24                     ct == kRGBA_8888_SkColorType ? "rgba" : "bgra",
25                     cs ? "srgb" : "null");
26    }
27
28protected:
29    const char* onGetName() override {
30        return fName.c_str();
31    }
32
33    void onDraw(int loops, SkCanvas* canvas) override {
34        canvas->clear(0x80000000);
35
36        SkISize size = canvas->getBaseLayerSize();
37
38        auto info = SkImageInfo::Make(size, fCT, fAT, fCS);
39        SkBitmap bitmap;
40        bitmap.allocPixels(info);
41
42        for (int i = 0; i < loops; i++) {
43            canvas->readPixels(bitmap.info(), bitmap.getPixels(), bitmap.rowBytes(), 0, 0);
44        }
45    }
46
47private:
48    SkColorType fCT;
49    SkAlphaType fAT;
50    sk_sp<SkColorSpace> fCS;
51    SkString fName;
52    using INHERITED = Benchmark;
53};
54DEF_BENCH( return new ReadPixBench(kRGBA_8888_SkColorType, kPremul_SkAlphaType, nullptr); )
55DEF_BENCH( return new ReadPixBench(kRGBA_8888_SkColorType, kUnpremul_SkAlphaType, nullptr); )
56DEF_BENCH( return new ReadPixBench(kRGBA_8888_SkColorType, kPremul_SkAlphaType, SkColorSpace::MakeSRGB()); )
57DEF_BENCH( return new ReadPixBench(kRGBA_8888_SkColorType, kUnpremul_SkAlphaType, SkColorSpace::MakeSRGB()); )
58
59DEF_BENCH( return new ReadPixBench(kBGRA_8888_SkColorType, kPremul_SkAlphaType, nullptr); )
60DEF_BENCH( return new ReadPixBench(kBGRA_8888_SkColorType, kUnpremul_SkAlphaType, nullptr); )
61DEF_BENCH( return new ReadPixBench(kBGRA_8888_SkColorType, kPremul_SkAlphaType, SkColorSpace::MakeSRGB()); )
62DEF_BENCH( return new ReadPixBench(kBGRA_8888_SkColorType, kUnpremul_SkAlphaType, SkColorSpace::MakeSRGB()); )
63
64////////////////////////////////////////////////////////////////////////////////
65#include "include/core/SkBitmap.h"
66#include "src/core/SkPixmapPriv.h"
67
68class PixmapOrientBench : public Benchmark {
69public:
70    PixmapOrientBench() {}
71
72protected:
73    void onDelayedSetup() override {
74        const SkImageInfo info = SkImageInfo::MakeN32Premul(2048, 1024);
75        fSrc.allocPixels(info);
76        fSrc.eraseColor(SK_ColorBLACK);
77        fDst.allocPixels(info.makeDimensions(info.dimensions()));
78    }
79
80    const char* onGetName() override {
81        return "orient_pixmap";
82    }
83
84    bool isSuitableFor(Backend backend) override {
85        return backend == kNonRendering_Backend;
86    }
87
88    void onDraw(int loops, SkCanvas*) override {
89        SkPixmap src, dst;
90        fSrc.peekPixels(&src);
91        fDst.peekPixels(&dst);
92        for (int i = 0; i < loops; ++i) {
93            SkPixmapPriv::Orient(dst, src, kTopRight_SkEncodedOrigin);
94        }
95    }
96
97private:
98    SkBitmap fSrc, fDst;
99
100    using INHERITED = Benchmark;
101};
102DEF_BENCH( return new PixmapOrientBench(); )
103
104
105class GetAlphafBench : public Benchmark {
106    SkString fName;
107    SkColorType fCT;
108public:
109    GetAlphafBench(SkColorType ct, const char label[]) : fCT(ct) {
110        fName.printf("getalphaf_%s", label);
111    }
112
113protected:
114    void onDelayedSetup() override {
115        fBM.allocPixels(SkImageInfo::Make(1024, 1024, fCT, kPremul_SkAlphaType));
116        fBM.eraseColor(0x88112233);
117    }
118
119    const char* onGetName() override {
120        return fName.c_str();
121    }
122
123    bool isSuitableFor(Backend backend) override {
124        return backend == kNonRendering_Backend;
125    }
126
127    void onDraw(int loops, SkCanvas*) override {
128        for (int i = 0; i < loops; ++i) {
129            for (int y = 0; y < fBM.height(); ++y) {
130                for (int x = 0; x < fBM.width(); ++x) {
131                    fBM.getAlphaf(x, y);
132                }
133            }
134        }
135    }
136
137private:
138    SkBitmap fBM;
139
140    using INHERITED = Benchmark;
141};
142DEF_BENCH( return new GetAlphafBench(kN32_SkColorType, "rgba"); )
143DEF_BENCH( return new GetAlphafBench(kRGB_888x_SkColorType, "rgbx"); )
144DEF_BENCH( return new GetAlphafBench(kRGBA_F16_SkColorType, "f16"); )
145DEF_BENCH( return new GetAlphafBench(kRGBA_F32_SkColorType, "f32"); )
146
147