font: remove unifont anti-aliasing and reduce font size to 16 (#36508)

remove unifont anti-aliasing and reduce font size to 16

Co-authored-by: Shane Smiskol <shane@smiskol.com>

selfdrive/assets/fonts/process.py

@@ -86,7 +86,7 @@ def _process_font(font_path: Path, codepoints: tuple[int, ...]):
   print(f"Processing {font_path.name}...")
 
   font_size = {
-    "unifont.otf": 24,  # unifont is huge
+    "unifont.otf": 16,  # unifont is only 16x8 or 16x16 pixels per glyph
   }.get(font_path.name, 200)
 
   data = font_path.read_bytes()

system/ui/lib/application.py

@@ -405,7 +405,8 @@ class GuiApplication:
       with as_file(FONT_DIR) as fspath:
         fnt_path = fspath / font_weight_file
         font = rl.load_font(fnt_path.as_posix())
-        rl.set_texture_filter(font.texture, rl.TextureFilter.TEXTURE_FILTER_BILINEAR)
+        if font_weight_file != FontWeight.UNIFONT:
+          rl.set_texture_filter(font.texture, rl.TextureFilter.TEXTURE_FILTER_BILINEAR)
         self._fonts[font_weight_file] = font
     rl.gui_set_font(self._fonts[FontWeight.NORMAL])