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      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 
      8 #include "Benchmark.h"
      9 #include "SkBitmap.h"
     10 #include "SkMipMap.h"
     11 
     12 class MipMapBench: public Benchmark {
     13     SkBitmap fBitmap;
     14     SkString fName;
     15     const int fW, fH;
     16     SkDestinationSurfaceColorMode fColorMode;
     17     bool fHalfFoat;
     18 
     19 public:
     20     MipMapBench(int w, int h, SkDestinationSurfaceColorMode colorMode, bool halfFloat = false)
     21         : fW(w), fH(h), fColorMode(colorMode), fHalfFoat(halfFloat)
     22     {
     23         fName.printf("mipmap_build_%dx%d_%d_gamma", w, h, static_cast<int>(colorMode));
     24         if (halfFloat) {
     25             fName.append("_f16");
     26         }
     27     }
     28 
     29 protected:
     30     bool isSuitableFor(Backend backend) override {
     31         return kNonRendering_Backend == backend;
     32     }
     33 
     34     const char* onGetName() override { return fName.c_str(); }
     35 
     36     void onDelayedSetup() override {
     37         SkImageInfo info = fHalfFoat ? SkImageInfo::Make(fW, fH, kRGBA_F16_SkColorType,
     38                                                          kPremul_SkAlphaType,
     39                                                          SkColorSpace::MakeSRGBLinear())
     40                                      : SkImageInfo::MakeS32(fW, fH, kPremul_SkAlphaType);
     41         fBitmap.allocPixels(info);
     42         fBitmap.eraseColor(SK_ColorWHITE);  // so we don't read uninitialized memory
     43     }
     44 
     45     void onDraw(int loops, SkCanvas*) override {
     46         for (int i = 0; i < loops * 4; i++) {
     47             SkMipMap::Build(fBitmap, fColorMode, nullptr)->unref();
     48         }
     49     }
     50 
     51 private:
     52     typedef Benchmark INHERITED;
     53 };
     54 
     55 // Build variants that exercise the width and heights being even or odd at each level, as the
     56 // impl specializes on each of these.
     57 //
     58 DEF_BENCH( return new MipMapBench(511, 511, SkDestinationSurfaceColorMode::kLegacy); )
     59 DEF_BENCH( return new MipMapBench(512, 511, SkDestinationSurfaceColorMode::kLegacy); )
     60 DEF_BENCH( return new MipMapBench(511, 512, SkDestinationSurfaceColorMode::kLegacy); )
     61 DEF_BENCH( return new MipMapBench(512, 512, SkDestinationSurfaceColorMode::kLegacy); )
     62 DEF_BENCH( return new MipMapBench(512, 512,
     63                                   SkDestinationSurfaceColorMode::kGammaAndColorSpaceAware); )
     64 DEF_BENCH( return new MipMapBench(511, 511,
     65                                   SkDestinationSurfaceColorMode::kGammaAndColorSpaceAware); )
     66 DEF_BENCH( return new MipMapBench(512, 512, SkDestinationSurfaceColorMode::kLegacy, true); )
     67 DEF_BENCH( return new MipMapBench(511, 511, SkDestinationSurfaceColorMode::kLegacy, true); )
     68 DEF_BENCH( return new MipMapBench(2048, 2048, SkDestinationSurfaceColorMode::kLegacy); )
     69 DEF_BENCH( return new MipMapBench(2048, 2048,
     70                                   SkDestinationSurfaceColorMode::kGammaAndColorSpaceAware); )
     71 DEF_BENCH( return new MipMapBench(2047, 2047, SkDestinationSurfaceColorMode::kLegacy); )
     72 DEF_BENCH( return new MipMapBench(2047, 2047,
     73                                   SkDestinationSurfaceColorMode::kGammaAndColorSpaceAware); )
     74 DEF_BENCH( return new MipMapBench(2048, 2047, SkDestinationSurfaceColorMode::kLegacy); )
     75 DEF_BENCH( return new MipMapBench(2048, 2047,
     76                                   SkDestinationSurfaceColorMode::kGammaAndColorSpaceAware); )
     77 DEF_BENCH( return new MipMapBench(2047, 2048, SkDestinationSurfaceColorMode::kLegacy); )
     78 DEF_BENCH( return new MipMapBench(2047, 2048,
     79                                   SkDestinationSurfaceColorMode::kGammaAndColorSpaceAware); )
     80