[perf] benchmark subsetting via glyphs.
diff --git a/perf/benchmark-subset.cc b/perf/benchmark-subset.cc
index cf775d5..d6102d4 100644
--- a/perf/benchmark-subset.cc
+++ b/perf/benchmark-subset.cc
@@ -17,6 +17,16 @@
}
}
+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_codepoints (benchmark::State &state,
const char *font_path)
@@ -86,4 +96,72 @@
->Range(10, 100000);
#endif
+
+static void BM_subset_glyphs (benchmark::State &state,
+ 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);
+
+ {
+ unsigned num_glyphs = hb_face_get_glyph_count (face);
+
+ AddGlyphs(num_glyphs, subset_size, input);
+ }
+
+ 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_glyphs, subset_roboto,
+ "perf/fonts/Roboto-Regular.ttf")
+ ->Unit(benchmark::kMillisecond)
+ ->Range(10, 4000);
+
+BENCHMARK_CAPTURE (BM_subset_glyphs, subset_amiri,
+ "perf/fonts/Amiri-Regular.ttf")
+ ->Unit(benchmark::kMillisecond)
+ ->Range(10, 4000);
+
+BENCHMARK_CAPTURE (BM_subset_glyphs, subset_noto_nastaliq_urdu,
+ "perf/fonts/NotoNastaliqUrdu-Regular.ttf")
+ ->Unit(benchmark::kMillisecond)
+ ->Range(10, 1000);
+
+BENCHMARK_CAPTURE (BM_subset_glyphs, subset_noto_devangari,
+ "perf/fonts/NotoSansDevanagari-Regular.ttf")
+ ->Unit(benchmark::kMillisecond)
+ ->Range(10, 1000);
+
+BENCHMARK_CAPTURE (BM_subset_glyphs, subset_mplus1p,
+ "test/subset/data/fonts/Mplus1p-Regular.ttf")
+ ->Unit(benchmark::kMillisecond)
+ ->Range(10, 10000);
+
+#if 0
+BENCHMARK_CAPTURE (BM_subset_glyphs, subset_notocjk,
+ "perf/fonts/NotoSansCJKsc-VF.ttf")
+ ->Unit(benchmark::kMillisecond)
+ ->Range(10, 100000);
+#endif
+
+
+
BENCHMARK_MAIN();
