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reduce unifont impact on init time (#36490)

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This commit is contained in:
Adeeb Shihadeh
2025-10-26 13:47:47 -07:00
committed by GitHub
parent 0d4b0ee116
commit cf5bb4e16e
1 changed files with 10 additions and 6 deletions
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selfdrive/assets/fonts/process.py
+10 -6
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@@ -9,7 +9,6 @@ SELFDRIVE_DIR = FONT_DIR.parents[1]
TRANSLATIONS_DIR = SELFDRIVE_DIR / "ui" / "translations"
LANGUAGES_FILE = TRANSLATIONS_DIR / "languages.json"
FONT_SIZE = 200
GLYPH_PADDING = 6
EXTRA_CHARS = "–‑✓×°§•€£¥"
UNIFONT_LANGUAGES = {"ar", "th", "zh-CHT", "zh-CHS", "ko", "ja"}
@@ -68,9 +67,9 @@ def _glyph_metrics(glyphs, rects, codepoints):
return entries, line_height, base
def _write_bmfont(path: Path, face: str, atlas_name: str, line_height: int, base: int, atlas_size, entries):
def _write_bmfont(path: Path, font_size: int, face: str, atlas_name: str, line_height: int, base: int, atlas_size, entries):
lines = [
f"info face=\"{face}\" size=-{FONT_SIZE} bold=0 italic=0 charset=\"\" unicode=1 stretchH=100 smooth=0 aa=1 padding=0,0,0,0 spacing=0,0 outline=0",
f"info face=\"{face}\" size=-{font_size} bold=0 italic=0 charset=\"\" unicode=1 stretchH=100 smooth=0 aa=1 padding=0,0,0,0 spacing=0,0 outline=0",
f"common lineHeight={line_height} base={base} scaleW={atlas_size[0]} scaleH={atlas_size[1]} pages=1 packed=0 alphaChnl=0 redChnl=4 greenChnl=4 blueChnl=4",
f"page id=0 file=\"{atlas_name}\"",
f"chars count={len(entries)}",
@@ -85,16 +84,21 @@ def _write_bmfont(path: Path, face: str, atlas_name: str, line_height: int, base
def _process_font(font_path: Path, codepoints: tuple[int, ...]):
print(f"Processing {font_path.name}...")
font_size = {
"unifont.otf": 24, # unifont is huge
}.get(font_path.name, 200)
data = font_path.read_bytes()
file_buf = rl.ffi.new("unsigned char[]", data)
cp_buffer = rl.ffi.new("int[]", codepoints)
cp_ptr = rl.ffi.cast("int *", cp_buffer)
glyphs = rl.load_font_data(rl.ffi.cast("unsigned char *", file_buf), len(data), FONT_SIZE, cp_ptr, len(codepoints), rl.FontType.FONT_DEFAULT)
glyphs = rl.load_font_data(rl.ffi.cast("unsigned char *", file_buf), len(data), font_size, cp_ptr, len(codepoints), rl.FontType.FONT_DEFAULT)
if glyphs == rl.ffi.NULL:
raise RuntimeError("raylib failed to load font data")
rects_ptr = rl.ffi.new("Rectangle **")
image = rl.gen_image_font_atlas(glyphs, rects_ptr, len(codepoints), FONT_SIZE, GLYPH_PADDING, 0)
image = rl.gen_image_font_atlas(glyphs, rects_ptr, len(codepoints), font_size, GLYPH_PADDING, 0)
if image.width == 0 or image.height == 0:
raise RuntimeError("raylib returned an empty atlas")
@@ -106,7 +110,7 @@ def _process_font(font_path: Path, codepoints: tuple[int, ...]):
if not rl.export_image(image, atlas_path.as_posix()):
raise RuntimeError("Failed to export atlas image")
_write_bmfont(FONT_DIR / f"{font_path.stem}.fnt", font_path.stem, atlas_name, line_height, base, (image.width, image.height), entries)
_write_bmfont(FONT_DIR / f"{font_path.stem}.fnt", font_size, font_path.stem, atlas_name, line_height, base, (image.width, image.height), entries)
def main():