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Allow storing more flags in the special glyph cache

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This commit is contained in:
Kovid Goyal 2018-01-13 08:05:38 +05:30
parent 4b501fd694
commit f03cac8a9d
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 11 additions and 8 deletions
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19
kitty/fonts.c
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@ -37,11 +37,13 @@ struct SpritePosition {
ExtraGlyphs extra_glyphs;
};
#define SPECIAL_FILLED_MASK 1
#define SPECIAL_VALUE_MASK 2
struct SpecialGlyphCache {
SpecialGlyphCache *next;
glyph_index glyph;
bool is_special, filled;
uint8_t data;
};
typedef struct {
@ -155,9 +157,9 @@ static SpecialGlyphCache*
special_glyph_cache_for(Font *font, glyph_index glyph) {
SpecialGlyphCache *s = font->special_glyph_cache + (glyph & 0x3ff);
// Optimize for the common case of glyph under 1024 already in the cache
if (LIKELY(s->glyph == glyph && s->filled)) return s; // Cache hit
if (LIKELY(s->glyph == glyph && s->data & SPECIAL_FILLED_MASK)) return s; // Cache hit
while(true) {
if (s->filled) {
if (s->data & SPECIAL_FILLED_MASK) {
if (s->glyph == glyph) return s; // Cache hit
} else {
break;
@ -212,7 +214,7 @@ clear_sprite_map(Font *font) {
void
clear_special_glyph_cache(Font *font) {
#define CLEAR(s) s->filled = false; s->glyph = 0;
#define CLEAR(s) s->data = 0; s->glyph = 0;
SpecialGlyphCache *s;
for (size_t i = 0; i < sizeof(font->special_glyph_cache)/sizeof(font->special_glyph_cache[0]); i++) {
s = font->special_glyph_cache + i;
@ -613,14 +615,15 @@ is_special_glyph(glyph_index glyph_id, Font *font, CellData* cell_data) {
// different glyph in the font
SpecialGlyphCache *s = special_glyph_cache_for(font, glyph_id);
if (s == NULL) return false;
if (!s->filled) {
s->is_special = cell_data->current_codepoint ? (
if (!(s->data & SPECIAL_FILLED_MASK)) {
bool is_special = cell_data->current_codepoint ? (
glyph_id != glyph_id_for_codepoint(font->face, cell_data->current_codepoint) ? true : false)
:
false;
s->filled = true;
uint8_t val = is_special ? SPECIAL_VALUE_MASK : 0;
s->data |= val | SPECIAL_FILLED_MASK;
}
return s->is_special;
return s->data & SPECIAL_VALUE_MASK;
}
static inline unsigned int