1 2 /* 3 * Copyright 2013 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 #include "Benchmark.h" 10 #include "SkCanvas.h" 11 #include "SkPaint.h" 12 #include "SkRandom.h" 13 14 /** 15 * Draws full screen opaque rectangles. It is designed to test any optimizations in the GPU backend 16 * to turn such draws into clears. 17 */ 18 class FSRectBench : public Benchmark { 19 public: 20 FSRectBench() : fInit(false) { } 21 22 protected: 23 virtual const char* onGetName() SK_OVERRIDE { return "fullscreen_rects"; } 24 25 virtual void onPreDraw() SK_OVERRIDE { 26 if (!fInit) { 27 SkRandom rand; 28 static const SkScalar kMinOffset = 0; 29 static const SkScalar kMaxOffset = 100 * SK_Scalar1; 30 static const SkScalar kOffsetRange = kMaxOffset - kMinOffset; 31 for (int i = 0; i < N; ++i) { 32 fRects[i].fLeft = -kMinOffset - SkScalarMul(rand.nextUScalar1(), kOffsetRange); 33 fRects[i].fTop = -kMinOffset - SkScalarMul(rand.nextUScalar1(), kOffsetRange); 34 fRects[i].fRight = W + kMinOffset + SkScalarMul(rand.nextUScalar1(), kOffsetRange); 35 fRects[i].fBottom = H + kMinOffset + SkScalarMul(rand.nextUScalar1(), kOffsetRange); 36 fColors[i] = rand.nextU() | 0xFF000000; 37 } 38 fInit = true; 39 } 40 } 41 42 virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE { 43 SkPaint paint; 44 for (int i = 0; i < loops; ++i) { 45 paint.setColor(fColors[i % N]); 46 canvas->drawRect(fRects[i % N], paint); 47 } 48 } 49 50 private: 51 enum { 52 W = 640, 53 H = 480, 54 N = 300, 55 }; 56 SkRect fRects[N]; 57 SkColor fColors[N]; 58 bool fInit; 59 60 typedef Benchmark INHERITED; 61 }; 62 63 DEF_BENCH( return SkNEW_ARGS(FSRectBench, ()); ) 64
