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      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 "SkCanvas.h"
      9 #include "SkPaint.h"
     10 #include "SkRandom.h"
     11 #include "SkString.h"
     12 #include "SkMatrixConvolutionImageFilter.h"
     13 
     14 class MatrixConvolutionBench : public SkBenchmark {
     15     SkMatrixConvolutionImageFilter::TileMode  fTileMode;
     16 
     17 public:
     18     MatrixConvolutionBench(void* param, SkMatrixConvolutionImageFilter::TileMode tileMode, bool convolveAlpha)
     19         : INHERITED(param), fName("matrixconvolution") {
     20         SkISize kernelSize = SkISize::Make(3, 3);
     21         SkScalar kernel[9] = {
     22             SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
     23             SkIntToScalar( 1), SkIntToScalar(-7), SkIntToScalar( 1),
     24             SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
     25         };
     26         SkScalar gain = SkFloatToScalar(0.3f), bias = SkIntToScalar(100);
     27         SkIPoint target = SkIPoint::Make(1, 1);
     28         fFilter = new SkMatrixConvolutionImageFilter(kernelSize, kernel, gain, bias, target, tileMode, convolveAlpha);
     29     }
     30 
     31     ~MatrixConvolutionBench() {
     32         fFilter->unref();
     33     }
     34 
     35 protected:
     36     virtual const char* onGetName() {
     37         return fName.c_str();
     38     }
     39 
     40     virtual void onDraw(SkCanvas* canvas) {
     41         SkPaint paint;
     42         this->setupPaint(&paint);
     43         paint.setAntiAlias(true);
     44         SkRandom rand;
     45         for (int i = 0; i < SkBENCHLOOP(3); i++) {
     46             SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
     47                                       rand.nextUScalar1() * 400);
     48             paint.setImageFilter(fFilter);
     49             canvas->drawOval(r, paint);
     50         }
     51     }
     52 
     53 private:
     54     typedef SkBenchmark INHERITED;
     55     SkMatrixConvolutionImageFilter* fFilter;
     56     SkString fName;
     57 };
     58 
     59 static SkBenchmark* Fact00(void* p) { return new MatrixConvolutionBench(p, SkMatrixConvolutionImageFilter::kClamp_TileMode, true); }
     60 static SkBenchmark* Fact01(void* p) { return new MatrixConvolutionBench(p, SkMatrixConvolutionImageFilter::kRepeat_TileMode, true); }
     61 static SkBenchmark* Fact02(void* p) { return new MatrixConvolutionBench(p, SkMatrixConvolutionImageFilter::kClampToBlack_TileMode, true); }
     62 static SkBenchmark* Fact03(void* p) { return new MatrixConvolutionBench(p, SkMatrixConvolutionImageFilter::kClampToBlack_TileMode, false); }
     63 
     64 static BenchRegistry gReg00(Fact00);
     65 static BenchRegistry gReg01(Fact01);
     66 static BenchRegistry gReg02(Fact02);
     67 static BenchRegistry gReg03(Fact03);
     68