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glyph-cache: generate at startup, never update while rendering

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Daniel Eklöf 2019-07-18 13:03:21 +02:00
parent 332f1c6a21
commit 6e69cf9562
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GPG key ID: 5BBD4992C116573F
2 changed files with 38 additions and 20 deletions
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44
main.c
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@ -351,6 +351,11 @@ main(int argc, char *const *argv)
.grid = &term.normal,
};
if (term.ptmx == -1) {
LOG_ERRNO("failed to open pseudo terminal");
goto out;
}
mtx_init(&term.kbd.repeat.mutex, mtx_plain);
cnd_init(&term.kbd.repeat.cond);
@ -415,7 +420,6 @@ main(int argc, char *const *argv)
f->strikeout.position, f->strikeout.thickness);
cairo_ft_scaled_font_unlock_face(f->font);
}
cairo_scaled_font_extents(term.fonts[0].font, &term.fextents);
@ -426,9 +430,32 @@ main(int argc, char *const *argv)
term.fextents.height, term.fextents.max_x_advance);
assert(term.fextents.max_y_advance == 0);
if (term.ptmx == -1) {
LOG_ERRNO("failed to open pseudo terminal");
goto out;
/* Glyph cache */
for (size_t i = 0; i < sizeof(term.fonts) / sizeof(term.fonts[0]); i++) {
struct font *f = &term.fonts[i];
for (int j = 0; j < 256; j++) {
cairo_glyph_t *glyphs = NULL;
int count = 0;
char c = j;
cairo_status_t status = cairo_scaled_font_text_to_glyphs(
f->font, 0, 0 + term.fextents.ascent,
&c, 1, &glyphs, &count,
NULL, NULL, NULL);
if (status != CAIRO_STATUS_SUCCESS)
continue;
if (count == 0)
continue;
assert(glyphs != NULL);
assert(count == 1);
f->glyph_cache[j].glyphs = glyphs;
f->glyph_cache[j].count = count;
}
}
term.wl.display = wl_display_connect(NULL);
@ -793,10 +820,13 @@ out:
free(term.alt.rows);
for (size_t i = 0; i < sizeof(term.fonts) / sizeof(term.fonts[0]); i++) {
if (term.fonts[i].font != NULL)
cairo_scaled_font_destroy(term.fonts[i].font);
struct font *f = &term.fonts[i];
if (f->font != NULL)
cairo_scaled_font_destroy(f->font);
for (size_t j = 0; j < 256; j++)
free(term.fonts[i].glyph_cache[j].glyphs);
cairo_glyph_free(f->glyph_cache[j].glyphs);
}
if (term.ptmx != -1)