1/*
2 * Copyright 2013 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 "Benchmark.h"
9#include "SkCanvas.h"
10#include "SkPaint.h"
11#include "SkRandom.h"
12
13/**
14 * Draws full screen opaque rectangles. It is designed to test any optimizations in the GPU backend
15 * to turn such draws into clears.
16 */
17class FSRectBench : public Benchmark {
18public:
19    FSRectBench() : fInit(false) { }
20
21protected:
22    const char* onGetName() override { return "fullscreen_rects"; }
23
24    void onDelayedSetup() override {
25        if (!fInit) {
26            SkRandom rand;
27            static const SkScalar kMinOffset = 0;
28            static const SkScalar kMaxOffset = 100 * SK_Scalar1;
29            static const SkScalar kOffsetRange = kMaxOffset - kMinOffset;
30            for (int i = 0; i < N; ++i) {
31                fRects[i].fLeft = -kMinOffset - rand.nextUScalar1() * kOffsetRange;
32                fRects[i].fTop = -kMinOffset - rand.nextUScalar1() * kOffsetRange;
33                fRects[i].fRight = W + kMinOffset + rand.nextUScalar1() * kOffsetRange;
34                fRects[i].fBottom = H + kMinOffset + rand.nextUScalar1() * kOffsetRange;
35                fColors[i] = rand.nextU() | 0xFF000000;
36            }
37            fInit = true;
38        }
39    }
40
41    void onDraw(int loops, SkCanvas* canvas) override {
42        SkPaint paint;
43        for (int i = 0; i < loops; ++i) {
44            paint.setColor(fColors[i % N]);
45            canvas->drawRect(fRects[i % N], paint);
46        }
47    }
48
49private:
50    enum {
51        W = 640,
52        H = 480,
53        N = 300,
54    };
55    SkRect  fRects[N];
56    SkColor fColors[N];
57    bool fInit;
58
59    typedef Benchmark INHERITED;
60};
61
62DEF_BENCH(return new FSRectBench();)
63