kc3-lang/harfbuzz/perf/benchmark-subset.cc

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• Hash : bc5129d7
  Author :
  Date : 2022-05-04T22:16:03
  

  [perf] use option_t in subset benchmark to select between glyphs and codepoint subset.
  

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• perf/benchmark-subset.cc

• #include "benchmark/benchmark.h"
  
  #include "hb-subset.h"
  
  // TODO(garretrieger): TrueType CJK font.
  // TODO(garretrieger): Amiri + Devanagari
  
  enum operation_t
  {
    subset_codepoints,
    subset_glyphs
  };
  
  void AddCodepoints(const hb_set_t* codepoints_in_font,
                     unsigned subset_size,
                     hb_subset_input_t* input)
  {
    hb_codepoint_t cp = HB_SET_VALUE_INVALID;
    for (unsigned i = 0; i < subset_size; i++) {
      // TODO(garretrieger): pick randomly.
      if (!hb_set_next (codepoints_in_font, &cp)) return;
      hb_set_add (hb_subset_input_unicode_set (input), cp);
    }
  }
  
  void AddGlyphs(unsigned num_glyphs_in_font,
                 unsigned subset_size,
                 hb_subset_input_t* input)
  {
    for (unsigned i = 0; i < subset_size && i < num_glyphs_in_font; i++) {
      // TODO(garretrieger): pick randomly.
      hb_set_add (hb_subset_input_glyph_set (input), i);
    }
  }
  
  /* benchmark for subsetting a font */
  static void BM_subset (benchmark::State &state,
                         operation_t operation,
                         const char *font_path)
  {
    unsigned subset_size = state.range(0);
  
    hb_face_t *face;
    {
      hb_blob_t *blob = hb_blob_create_from_file_or_fail (font_path);
      assert (blob);
      face = hb_face_create (blob, 0);
      hb_blob_destroy (blob);
    }
  
    hb_subset_input_t* input = hb_subset_input_create_or_fail ();
    assert (input);
  
    {
      hb_set_t* all_codepoints = hb_set_create ();
      switch (operation) {
        case subset_codepoints:
          hb_face_collect_unicodes (face, all_codepoints);
          AddCodepoints(all_codepoints, subset_size, input);
          break;
        case subset_glyphs:
          unsigned num_glyphs = hb_face_get_glyph_count (face);
          AddGlyphs(num_glyphs, subset_size, input);
          break;
      }
      hb_set_destroy (all_codepoints);
    }
  
    for (auto _ : state)
    {
      hb_face_t* subset = hb_subset_or_fail (face, input);
      assert (subset);
      hb_face_destroy (subset);
    }
  
    hb_subset_input_destroy (input);
    hb_face_destroy (face);
  }
  
  BENCHMARK_CAPTURE (BM_subset, subset_codepoints_roboto,
                     subset_codepoints,
                     "perf/fonts/Roboto-Regular.ttf")
      ->Unit(benchmark::kMillisecond)
      ->Range(10, 4000);
  
  BENCHMARK_CAPTURE (BM_subset, subset_glyphs_roboto,
                     subset_glyphs,
                     "perf/fonts/Roboto-Regular.ttf")
      ->Unit(benchmark::kMillisecond)
      ->Range(10, 4000);
  
  BENCHMARK_CAPTURE (BM_subset, subset_codepoints_amiri,
                     subset_codepoints,
                     "perf/fonts/Amiri-Regular.ttf")
      ->Unit(benchmark::kMillisecond)
      ->Range(10, 4000);
  
  BENCHMARK_CAPTURE (BM_subset, subset_glyphs_amiri,
                     subset_glyphs,
                     "perf/fonts/Amiri-Regular.ttf")
      ->Unit(benchmark::kMillisecond)
      ->Range(10, 4000);
  
  BENCHMARK_CAPTURE (BM_subset, subset_codepoints_noto_nastaliq_urdu,
                     subset_codepoints,
                     "perf/fonts/NotoNastaliqUrdu-Regular.ttf")
      ->Unit(benchmark::kMillisecond)
      ->Range(10, 1000);
  
  BENCHMARK_CAPTURE (BM_subset, subset_glyphs_noto_nastaliq_urdu,
                     subset_glyphs,
                     "perf/fonts/NotoNastaliqUrdu-Regular.ttf")
      ->Unit(benchmark::kMillisecond)
      ->Range(10, 1000);
  
  BENCHMARK_CAPTURE (BM_subset, subset_codepoints_noto_devangari,
                     subset_codepoints,
                     "perf/fonts/NotoSansDevanagari-Regular.ttf")
      ->Unit(benchmark::kMillisecond)
      ->Range(10, 1000);
  
  BENCHMARK_CAPTURE (BM_subset, subset_glyphs_noto_devangari,
                     subset_glyphs,
                     "perf/fonts/NotoSansDevanagari-Regular.ttf")
      ->Unit(benchmark::kMillisecond)
      ->Range(10, 1000);
  
  BENCHMARK_CAPTURE (BM_subset, subset_codepoints_mplus1p,
                     subset_codepoints,
                     "test/subset/data/fonts/Mplus1p-Regular.ttf")
      ->Unit(benchmark::kMillisecond)
      ->Range(10, 10000);
  
  BENCHMARK_CAPTURE (BM_subset, subset_glyphs_mplus1p,
                     subset_glyphs,
                     "test/subset/data/fonts/Mplus1p-Regular.ttf")
      ->Unit(benchmark::kMillisecond)
      ->Range(10, 10000);
  
  
  #if 0
  BENCHMARK_CAPTURE (BM_subset, subset_codepoints_notocjk,
                     subset_codepoints,
                     "perf/fonts/NotoSansCJKsc-VF.ttf")
      ->Unit(benchmark::kMillisecond)
      ->Range(10, 100000);
  
  BENCHMARK_CAPTURE (BM_subset, subset_glyphs_notocjk,
                     subset_glyphs,
                     "perf/fonts/NotoSansCJKsc-VF.ttf")
      ->Unit(benchmark::kMillisecond)
      ->Range(10, 100000);
  #endif
  
  
  
  BENCHMARK_MAIN();
  

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