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Optimize CPU text shaping

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Mike Precup
2025-08-08 03:44:21 -07:00
parent 5950fca36c
commit 6fbb89df54
3 changed files with 133 additions and 40 deletions
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68
modules/text_server_adv/text_server_adv.h
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@@ -705,7 +705,73 @@ class TextServerAdvanced : public TextServerExtension {
int64_t _convert_pos(const ShapedTextDataAdvanced *p_sd, int64_t p_pos) const;
int64_t _convert_pos_inv(const ShapedTextDataAdvanced *p_sd, int64_t p_pos) const;
bool _shape_substr(ShapedTextDataAdvanced *p_new_sd, const ShapedTextDataAdvanced *p_sd, int64_t p_start, int64_t p_length) const;
void _shape_run(ShapedTextDataAdvanced *p_sd, int64_t p_start, int64_t p_end, hb_script_t p_script, hb_direction_t p_direction, TypedArray<RID> p_fonts, int64_t p_span, int64_t p_fb_index, int64_t p_prev_start, int64_t p_prev_end, RID p_prev_font);
struct FontPriorityList {
friend class TextServerAdvanced;
const int MAX_PRIORITY = 2;
int current_priority = 0;
uint32_t current_index = 0;
uint32_t font_count = 0;
const String *language;
const String *script_code;
LocalVector<Pair<RID, int>> unprocessed_fonts;
LocalVector<RID> fonts;
const TextServerAdvanced *text_server;
FontPriorityList(const TextServerAdvanced *p_text_server, const Array &p_fonts, const String &p_language, const String &p_script_code) {
text_server = p_text_server;
language = &p_language;
script_code = &p_script_code;
font_count = p_fonts.size();
unprocessed_fonts.reserve(font_count);
for (uint32_t i = 0; i < font_count; i++) {
unprocessed_fonts.push_back(Pair<RID, int>(p_fonts[i], -1));
}
fonts.reserve(font_count);
if (font_count > 0) {
fonts.push_back(p_fonts[0]);
unprocessed_fonts[0].second = 0;
current_index++;
}
}
_FORCE_INLINE_ uint32_t size() const {
return font_count;
}
_FORCE_INLINE_ int _get_priority(const RID &font) {
return text_server->_font_is_script_supported(font, *script_code) ? (text_server->_font_is_language_supported(font, *language) ? 0 : 1) : 2;
}
RID operator[](uint32_t index) {
if (index < fonts.size()) {
return fonts[index];
}
while (current_priority < MAX_PRIORITY || current_index < font_count) {
if (current_index >= font_count) {
current_priority++;
current_index = 0;
}
const RID &font = unprocessed_fonts[current_index].first;
int &priority = unprocessed_fonts[current_index].second;
if (priority < 0) {
priority = _get_priority(font);
}
if (priority == current_priority) {
fonts.push_back(font);
if (index < fonts.size()) {
return fonts[index];
}
}
current_index++;
}
return RID();
}
};
void _shape_run(ShapedTextDataAdvanced *p_sd, int64_t p_start, int64_t p_end, hb_script_t p_script, hb_direction_t p_direction, FontPriorityList &p_fonts, int64_t p_span, int64_t p_fb_index, int64_t p_prev_start, int64_t p_prev_end, RID p_prev_font);
Glyph _shape_single_glyph(ShapedTextDataAdvanced *p_sd, char32_t p_char, hb_script_t p_script, hb_direction_t p_direction, const RID &p_font, int64_t p_font_size);
_FORCE_INLINE_ RID _find_sys_font_for_text(const RID &p_fdef, const String &p_script_code, const String &p_language, const String &p_text);