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render: cache glyph masks
Cache rendered glyph masks for each font combo. When rendering text, use these when possible (standard ASCII). For now, use the cached glyph as a mask. This allows colors to just work. It would be faster to cache a completely pre-rendered image, but then we would need one image for each background/foreground combo.
This commit is contained in:
Daniel Eklöf
parent
e6d9eb7c9e
commit
3d8e140a28
1 changed files with 102 additions and 38 deletions
140
main.c
140
main.c
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@ -45,10 +45,16 @@ struct wayland {
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struct xdg_toplevel *xdg_toplevel;
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};
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struct glyph_cache {
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cairo_scaled_font_t *font;
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cairo_surface_t *surf[256];
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cairo_pattern_t *cache[256];
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};
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struct context {
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bool quit;
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cairo_scaled_font_t *fonts[8];
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struct glyph_cache fonts[4];
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cairo_font_extents_t fextents;
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int width;
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@ -61,7 +67,6 @@ struct context {
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bool frame_is_scheduled;
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};
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static void frame_callback(
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void *data, struct wl_callback *wl_callback, uint32_t callback_data);
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@ -69,11 +74,11 @@ static const struct wl_callback_listener frame_listener = {
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.done = &frame_callback,
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};
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static cairo_scaled_font_t *
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static struct glyph_cache *
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attrs_to_font(struct context *c, const struct attributes *attrs)
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{
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int idx = attrs->italic << 1 | attrs->bold;
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return c->fonts[idx];
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return &c->fonts[idx];
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}
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static void
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@ -138,15 +143,9 @@ grid_render_update(struct context *c, struct buffer *buf, const struct damage *d
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background = swap;
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}
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//LOG_DBG("cell %dx%d dirty: c=0x%02x (%c)",
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// row, col, cell->c[0], cell->c[0]);
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cairo_scaled_font_t *font = attrs_to_font(c, &cell->attrs);
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cairo_set_scaled_font(buf->cairo, font);
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/* Background */
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cairo_set_source_rgba(
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buf->cairo, background.r, background.g, background.b, background.a);
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/* Background */
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cairo_rectangle(buf->cairo, x, y, width, height);
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cairo_fill(buf->cairo);
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@ -156,24 +155,45 @@ grid_render_update(struct context *c, struct buffer *buf, const struct damage *d
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if (cell->attrs.conceal)
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continue;
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cairo_glyph_t *glyphs = NULL;
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int num_glyphs = 0;
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cairo_status_t status = cairo_scaled_font_text_to_glyphs(
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font, x, y + c->fextents.ascent,
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cell->c, strlen(cell->c), &glyphs, &num_glyphs,
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NULL, NULL, NULL);
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if (status != CAIRO_STATUS_SUCCESS) {
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if (glyphs != NULL)
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cairo_glyph_free(glyphs);
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continue;
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}
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struct glyph_cache *cache = attrs_to_font(c, &cell->attrs);
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cairo_set_source_rgba(
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buf->cairo, foreground.r, foreground.g, foreground.b, foreground.a);
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cairo_show_glyphs(buf->cairo, glyphs, num_glyphs);
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cairo_glyph_free(glyphs);
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if (strlen(cell->c) == 1 && cache->cache[(int)cell->c[0]] != NULL) {
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cairo_matrix_t matrix;
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cairo_matrix_init_translate(&matrix, -x, -y);
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cairo_pattern_t *pat = cache->cache[(int)cell->c[0]];
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cairo_pattern_set_matrix(pat, &matrix);
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#if 1
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cairo_pattern_set_matrix(pat, &matrix);
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cairo_mask(buf->cairo, pat);
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#else /* TODO: blit image instead - but doesn't (yet) handle colors */
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cairo_set_source(buf->cairo, pat);
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cairo_rectangle(buf->cairo, x, y, width, height);
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cairo_fill(buf->cairo);
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#endif
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} else {
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cairo_glyph_t *glyphs = NULL;
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int num_glyphs = 0;
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cairo_status_t status = cairo_scaled_font_text_to_glyphs(
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cache->font, x, y + c->fextents.ascent,
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cell->c, strlen(cell->c), &glyphs, &num_glyphs,
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NULL, NULL, NULL);
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if (status != CAIRO_STATUS_SUCCESS) {
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if (glyphs != NULL)
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cairo_glyph_free(glyphs);
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continue;
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}
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cairo_set_scaled_font(buf->cairo, cache->font);
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cairo_show_glyphs(buf->cairo, glyphs, num_glyphs);
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cairo_glyph_free(glyphs);
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}
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}
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wl_surface_damage_buffer(
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@ -453,8 +473,6 @@ resize(struct context *c, int width, int height)
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const size_t normal_old_size = c->term.normal.size;
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const size_t alt_old_size = c->term.alt.size;
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c->term.cell_width = (int)ceil(c->fextents.max_x_advance);
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c->term.cell_height = (int)ceil(c->fextents.height);
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c->term.cols = c->width / c->term.cell_width;
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c->term.rows = c->height / c->term.cell_height;
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@ -802,30 +820,70 @@ main(int argc, const char *const *argv)
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thrd_create(&keyboard_repeater_id, &keyboard_repeater, &c.term);
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const char *font_name = "Dina:pixelsize=12";
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c.fonts[0] = font_from_name(font_name);
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if (c.fonts[0] == NULL)
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c.fonts[0].font = font_from_name(font_name);
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if (c.fonts[0].font == NULL)
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goto out;
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{
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char fname[1024];
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snprintf(fname, sizeof(fname), "%s:style=bold", font_name);
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c.fonts[1] = font_from_name(fname);
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c.fonts[1].font = font_from_name(fname);
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snprintf(fname, sizeof(fname), "%s:style=italic", font_name);
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c.fonts[2] = font_from_name(fname);
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c.fonts[2].font = font_from_name(fname);
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snprintf(fname, sizeof(fname), "%s:style=bold italic", font_name);
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c.fonts[3] = font_from_name(fname);
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/* TODO; underline */
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c.fonts[3].font = font_from_name(fname);
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}
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cairo_scaled_font_extents(c.fonts[0], &c.fextents);
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cairo_scaled_font_extents(c.fonts[0].font, &c.fextents);
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c.term.cell_width = (int)ceil(c.fextents.max_x_advance);
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c.term.cell_height = (int)ceil(c.fextents.height);
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LOG_DBG("font: height: %.2f, x-advance: %.2f",
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c.fextents.height, c.fextents.max_x_advance);
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assert(c.fextents.max_y_advance == 0);
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for (size_t i; i < sizeof(c.fonts) / sizeof(c.fonts[0]); i++) {
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cairo_scaled_font_t *font = c.fonts[i].font;
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for (size_t j = 0; j < 256; j++) {
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const char text[2] = {(char)j, '\0'};
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cairo_glyph_t *glyphs = NULL;
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int num_glyphs = 0;
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cairo_status_t status = cairo_scaled_font_text_to_glyphs(
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font, 0, 0 + c.fextents.ascent,
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text, 1, &glyphs, &num_glyphs, NULL, NULL, NULL);
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if (status != CAIRO_STATUS_SUCCESS || num_glyphs != 1) {
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if (glyphs != NULL)
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cairo_glyph_free(glyphs);
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continue;
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}
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cairo_surface_t *surf = cairo_image_surface_create(
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CAIRO_FORMAT_ARGB32, c.term.cell_width, c.term.cell_height);
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cairo_t *ca = cairo_create(surf);
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cairo_set_scaled_font(ca, font);
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cairo_set_source_rgba(ca, 1.0, 1.0, 1.0, 1.0);
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cairo_show_glyphs(ca, glyphs, num_glyphs);
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cairo_glyph_free(glyphs);
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cairo_destroy(ca);
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assert(surf != NULL);
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assert(cairo_surface_status(surf) == CAIRO_STATUS_SUCCESS);
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c.fonts[i].surf[j] = surf;
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cairo_pattern_t *pat = cairo_pattern_create_for_surface(surf);
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assert(cairo_pattern_status(pat) == CAIRO_STATUS_SUCCESS);
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c.fonts[i].cache[j] = pat;
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}
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}
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if (c.term.ptmx == -1) {
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LOG_ERRNO("failed to open pseudo terminal");
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goto out;
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@ -988,8 +1046,14 @@ out:
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free(c.term.alt.cells);
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for (size_t i = 0; i < sizeof(c.fonts) / sizeof(c.fonts[0]); i++) {
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if (c.fonts[i] != NULL)
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cairo_scaled_font_destroy(c.fonts[i]);
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struct glyph_cache *fcache = &c.fonts[i];
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if (fcache->font != NULL)
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cairo_scaled_font_destroy(fcache->font);
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for (size_t i = 0; i < sizeof(fcache->cache) / sizeof(fcache->cache[0]); i++) {
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if (fcache->cache[i] != NULL)
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cairo_pattern_destroy(fcache->cache[i]);
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}
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}
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if (c.term.ptmx != -1)
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