kc3-lang/harfbuzz/perf/perf-shaping.hh

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• Hash : 95b1081b
  Author :
  Date : 2020-06-09T17:37:36
  

  Add performance benchmark for shaping, get extents and draw
  

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• perf/perf-shaping.hh

• #include "benchmark/benchmark.h"
  
  #include "hb.h"
  
  static void shape (benchmark::State &state, const char *text_path,
  		   hb_direction_t direction, hb_script_t script,
  		   const char *font_path)
  {
    hb_font_t *font;
    {
      hb_blob_t *blob = hb_blob_create_from_file (font_path);
      assert (hb_blob_get_length (blob));
      hb_face_t *face = hb_face_create (blob, 0);
      hb_blob_destroy (blob);
      font = hb_font_create (face);
      hb_face_destroy (face);
    }
  
    hb_blob_t *text_blob = hb_blob_create_from_file (text_path);
    unsigned text_length;
    const char *text = hb_blob_get_data (text_blob, &text_length);
    assert (text_length);
  
    hb_buffer_t *buf = hb_buffer_create ();
    for (auto _ : state)
    {
      hb_buffer_add_utf8 (buf, text, text_length, 0, -1);
      hb_buffer_set_direction (buf, direction);
      hb_buffer_set_script (buf, script);
      hb_shape (font, buf, nullptr, 0);
      hb_buffer_clear_contents (buf);
    }
    hb_buffer_destroy (buf);
  
    hb_blob_destroy (text_blob);
    hb_font_destroy (font);
  }
  
  BENCHMARK_CAPTURE (shape, fa-thelittleprince.txt - Amiri,
  		   "perf/texts/fa-thelittleprince.txt",
  		   HB_DIRECTION_RTL, HB_SCRIPT_ARABIC,
  		   "perf/fonts/Amiri-Regular.ttf");
  BENCHMARK_CAPTURE (shape, fa-thelittleprince.txt - NotoNastaliqUrdu,
  		   "perf/texts/fa-thelittleprince.txt",
  		   HB_DIRECTION_RTL, HB_SCRIPT_ARABIC,
  		   "perf/fonts/NotoNastaliqUrdu-Regular.ttf");
  
  BENCHMARK_CAPTURE (shape, fa-monologue.txt - Amiri,
  		   "perf/texts/fa-monologue.txt",
  		   HB_DIRECTION_RTL, HB_SCRIPT_ARABIC,
  		   "perf/fonts/Amiri-Regular.ttf");
  BENCHMARK_CAPTURE (shape, fa-monologue.txt - NotoNastaliqUrdu,
  		   "perf/texts/fa-monologue.txt",
  		   HB_DIRECTION_RTL, HB_SCRIPT_ARABIC,
  		   "perf/fonts/NotoNastaliqUrdu-Regular.ttf");
  
  BENCHMARK_CAPTURE (shape, en-thelittleprince.txt - Roboto,
  		   "perf/texts/en-thelittleprince.txt",
  		   HB_DIRECTION_LTR, HB_SCRIPT_LATIN,
  		   "perf/fonts/Roboto-Regular.ttf");
  
  BENCHMARK_CAPTURE (shape, en-words.txt - Roboto,
  		   "perf/texts/en-words.txt",
  		   HB_DIRECTION_LTR, HB_SCRIPT_LATIN,
  		   "perf/fonts/Roboto-Regular.ttf");
  

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