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[benchmark-shape] Break lines and shape separately

This commit is contained in:
Behdad Esfahbod 2022-04-29 16:02:55 -06:00
parent be1ac9c572
commit 35681b3edb
1 changed files with 17 additions and 6 deletions
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23
perf/benchmark-shape.cc
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@ -42,16 +42,27 @@ static void BM_Shape (benchmark::State &state, const test_input_t &input)
hb_blob_t *text_blob = hb_blob_create_from_file_or_fail (input.text_path); hb_blob_t *text_blob = hb_blob_create_from_file_or_fail (input.text_path);
assert (text_blob); assert (text_blob);
unsigned text_length; unsigned orig_text_length;
const char *text = hb_blob_get_data (text_blob, &text_length); const char *orig_text = hb_blob_get_data (text_blob, &orig_text_length);
hb_buffer_t *buf = hb_buffer_create (); hb_buffer_t *buf = hb_buffer_create ();
for (auto _ : state) for (auto _ : state)
{ {
hb_buffer_add_utf8 (buf, text, text_length, 0, -1); unsigned text_length = orig_text_length;
hb_buffer_guess_segment_properties (buf); const char *text = orig_text;
hb_shape (font, buf, nullptr, 0);
hb_buffer_clear_contents (buf); const char *end;
while ((end = (const char *) memchr (text, '\n', text_length)))
{
hb_buffer_clear_contents (buf);
hb_buffer_add_utf8 (buf, text, text_length, 0, end - text);
hb_buffer_guess_segment_properties (buf);
hb_shape (font, buf, nullptr, 0);
unsigned skip = end - text + 1;
text_length -= skip;
text += skip;
}
} }
hb_buffer_destroy (buf); hb_buffer_destroy (buf);