fix view leak and add view count

src/render/primitive.rs

@@ -4,7 +4,7 @@ use std::{
 };
 
 use crate::{
-    layout::{Color, TextureHandle, UiRegion},
+    layout::{Color, UiRegion},
     render::{ArrBuf, data::PrimitiveInstance},
 };
 use bytemuck::Pod;
@@ -14,8 +14,6 @@ pub struct Primitives {
     pub(super) instances: Vec<PrimitiveInstance>,
     pub(super) run: Vec<PrimitiveInstance>,
     pub(super) data: PrimitiveData,
-    // ensure drawn textures don't get freed
-    pub(crate) drawn_textures: Vec<TextureHandle>,
     pub updated: bool,
     run_start: usize,
 }
@@ -26,7 +24,6 @@ impl Default for Primitives {
             instances: Default::default(),
             run: Default::default(),
             data: Default::default(),
-            drawn_textures: Default::default(),
             updated: true,
             run_start: 0,
         }
@@ -117,7 +114,6 @@ impl Primitives {
         self.instances.clear();
         self.run.clear();
         self.data.clear();
-        self.drawn_textures.clear();
     }
 
     pub fn set<P: Primitive>(&mut self, handle: &PrimitiveHandle<P>, data: P) {