Add retained paints and shared text selection

core/src/ui/mod.rs

@@ -1,5 +1,5 @@
 use crate::{
-    Mask, MoveOffset, TextData, Textures, WeakWidget, WidgetId, Widgets, util::TrackedArena,
+    Mask, MoveOffset, Paints, TextData, Textures, WeakWidget, WidgetId, Widgets, util::TrackedArena,
 };
 
 mod access;
@@ -15,6 +15,7 @@ pub use render_state::*;
 #[derive(Default)]
 pub struct UiData {
     pub widgets: Widgets,
+    pub paints: Paints,
     pub textures: Textures,
     pub text: TextData,
     pub masks: TrackedArena<Mask, u32>,
@@ -70,5 +71,6 @@ pub trait UiRsc {
             self.on_remove(id);
         }
         self.ui_mut().textures.free();
+        self.ui_mut().paints.free_released();
     }
 }