ui: support asset flip (#37367)

* support asset flip

* clean up

selfdrive/ui/mici/onroad/alert_renderer.py

@@ -112,9 +112,9 @@ class AlertRenderer(Widget):
 
   def _load_icons(self):
     self._txt_turn_signal_left = gui_app.texture('icons_mici/onroad/turn_signal_left.png', 104, 96)
-    self._txt_turn_signal_right = gui_app.texture('icons_mici/onroad/turn_signal_right.png', 104, 96)
+    self._txt_turn_signal_right = gui_app.texture('icons_mici/onroad/turn_signal_left.png', 104, 96, flip_x=True)
     self._txt_blind_spot_left = gui_app.texture('icons_mici/onroad/blind_spot_left.png', 134, 150)
-    self._txt_blind_spot_right = gui_app.texture('icons_mici/onroad/blind_spot_right.png', 134, 150)
+    self._txt_blind_spot_right = gui_app.texture('icons_mici/onroad/blind_spot_left.png', 134, 150, flip_x=True)
 
   def get_alert(self, sm: messaging.SubMaster) -> Alert | None:
     """Generate the current alert based on selfdrive state."""

selfdrive/ui/mici/onroad/hud_renderer.py

@@ -50,7 +50,7 @@ class TurnIntent(Widget):
     self._turn_intent_rotation_filter = FirstOrderFilter(0, 0.1, 1 / gui_app.target_fps)
 
     self._txt_turn_intent_left: rl.Texture = gui_app.texture('icons_mici/turn_intent_left.png', 50, 20)
-    self._txt_turn_intent_right: rl.Texture = gui_app.texture('icons_mici/turn_intent_right.png', 50, 20)
+    self._txt_turn_intent_right: rl.Texture = gui_app.texture('icons_mici/turn_intent_left.png', 50, 20, flip_x=True)
 
   def _render(self, _):
     if self._turn_intent_alpha_filter.x > 1e-2:

system/ui/lib/application.py

@@ -418,19 +418,19 @@ class GuiApplication:
     self._should_render = should_render
 
   def texture(self, asset_path: str, width: int | None = None, height: int | None = None,
-              alpha_premultiply=False, keep_aspect_ratio=True):
-    cache_key = f"{asset_path}_{width}_{height}_{alpha_premultiply}{keep_aspect_ratio}"
+              alpha_premultiply=False, keep_aspect_ratio=True, flip_x: bool = False) -> rl.Texture:
+    cache_key = f"{asset_path}_{width}_{height}_{alpha_premultiply}_{keep_aspect_ratio}_{flip_x}"
     if cache_key in self._textures:
       return self._textures[cache_key]
 
     with as_file(ASSETS_DIR.joinpath(asset_path)) as fspath:
-      image_obj = self._load_image_from_path(fspath.as_posix(), width, height, alpha_premultiply, keep_aspect_ratio)
+      image_obj = self._load_image_from_path(fspath.as_posix(), width, height, alpha_premultiply, keep_aspect_ratio, flip_x)
       texture_obj = self._load_texture_from_image(image_obj)
     self._textures[cache_key] = texture_obj
     return texture_obj
 
   def _load_image_from_path(self, image_path: str, width: int | None = None, height: int | None = None,
-                            alpha_premultiply: bool = False, keep_aspect_ratio: bool = True) -> rl.Image:
+                            alpha_premultiply: bool = False, keep_aspect_ratio: bool = True, flip_x: bool = False) -> rl.Image:
     """Load and resize an image, storing it for later automatic unloading."""
     image = rl.load_image(image_path)
 
@@ -459,6 +459,10 @@ class GuiApplication:
           rl.image_resize(image, width, height)
     else:
       assert keep_aspect_ratio, "Cannot resize without specifying width and height"
+
+    if flip_x:
+      rl.image_flip_horizontal(image)
+
     return image
 
   def _load_texture_from_image(self, image: rl.Image) -> rl.Texture: