1 /* 2 * Copyright 2015 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 "Benchmark.h" 8 #include "SkCanvas.h" 9 #include "SkMatrix.h" 10 #include "SkPaint.h" 11 #include "SkString.h" 12 13 /** 14 * This bench measures the rendering time of SkCanvas::drawBitmap with different anti-aliasing / 15 * matrix combinations. 16 */ 17 18 class DrawBitmapAABench : public Benchmark { 19 public: DrawBitmapAABench(bool doAA,const SkMatrix & matrix,const char name[])20 DrawBitmapAABench(bool doAA, const SkMatrix& matrix, const char name[]) 21 : fMatrix(matrix) 22 , fName("draw_bitmap_") { 23 24 fPaint.setAntiAlias(doAA); 25 // Most clients use filtering, so let's focus on this for now. 26 fPaint.setFilterQuality(kLow_SkFilterQuality); 27 fName.appendf("%s_%s", doAA ? "aa" : "noaa", name); 28 } 29 30 protected: onGetName()31 const char* onGetName() override { 32 return fName.c_str(); 33 } 34 onDelayedSetup()35 void onDelayedSetup() override { 36 fBitmap.allocN32Pixels(200, 200); 37 fBitmap.eraseARGB(255, 0, 255, 0); 38 } 39 onDraw(int loops,SkCanvas * canvas)40 void onDraw(int loops, SkCanvas* canvas) override { 41 canvas->concat(fMatrix); 42 for (int i = 0; i < loops; i++) { 43 canvas->drawBitmap(fBitmap, 0, 0, &fPaint); 44 } 45 } 46 47 private: 48 SkPaint fPaint; 49 SkMatrix fMatrix; 50 SkString fName; 51 SkBitmap fBitmap; 52 53 typedef Benchmark INHERITED; 54 }; 55 56 DEF_BENCH( return new DrawBitmapAABench(false, SkMatrix::MakeScale(1), "ident"); ) 57 58 DEF_BENCH( return new DrawBitmapAABench(false, SkMatrix::MakeScale(1.17f), "scale"); ) 59 60 DEF_BENCH( return new DrawBitmapAABench(false, SkMatrix::MakeTrans(17.5f, 17.5f), "translate"); ) 61 62 DEF_BENCH( 63 SkMatrix m; 64 m.reset(); 65 m.preRotate(15); 66 return new DrawBitmapAABench(false, m, "rotate"); 67 ) 68 69 DEF_BENCH( return new DrawBitmapAABench(true, SkMatrix::MakeScale(1), "ident"); ) 70 71 DEF_BENCH( return new DrawBitmapAABench(true, SkMatrix::MakeScale(1.17f), "scale"); ) 72 73 DEF_BENCH( return new DrawBitmapAABench(true, SkMatrix::MakeTrans(17.5f, 17.5f), "translate"); ) 74 75 DEF_BENCH( 76 SkMatrix m; 77 m.reset(); 78 m.preRotate(15); 79 return new DrawBitmapAABench(true, m, "rotate"); 80 ) 81