renderer example compilation fixes

crates/re_renderer/src/point_cloud_builder.rs

@@ -61,12 +61,12 @@ impl PointCloudBuilder {
             .expect("Failed to allocate picking layer buffer"); // TODO(#3408): Should never happen but should propagate error anyways
 
         Self {
-            vertices: Vec::with_capacity(max_num_points as usize),
+            vertices: Vec::with_capacity(max_num_points),
             color_buffer,
             picking_instance_ids_buffer,
             batches: Vec::with_capacity(16),
             radius_boost_in_ui_points_for_outlines: 0.0,
-            max_num_points: max_num_points as usize,
+            max_num_points,
         }
     }
 

crates/re_renderer/src/renderer/lines.rs

@@ -486,7 +486,7 @@ impl LineDrawData {
 
             let texture_size = line_strip_texture.texture.size();
             let texel_count = (texture_size.width * texture_size.height) as usize;
-            let num_elements_padding = texel_count - num_strips as usize;
+            let num_elements_padding = texel_count - num_strips;
 
             let mut staging_buffer = ctx.cpu_write_gpu_read_belt.lock().allocate(
                 &ctx.device,

crates/re_renderer_examples/depth_cloud.rs

@@ -99,7 +99,7 @@ impl RenderDepthClouds {
                 })
                 .multiunzip();
 
-            let mut builder = PointCloudBuilder::new(re_ctx, points.len() as u32);
+            let mut builder = PointCloudBuilder::new(re_ctx, points.len());
             builder
                 .batch("backprojected point cloud")
                 .add_points(&points, &radii, &colors, &[]);

crates/re_renderer_examples/multiview.rs

@@ -327,7 +327,7 @@ impl Example for Multiview {
         let skybox = GenericSkyboxDrawData::new(re_ctx);
         let lines = build_lines(re_ctx, seconds_since_startup);
 
-        let mut builder = PointCloudBuilder::new(re_ctx, self.random_points_positions.len() as u32);
+        let mut builder = PointCloudBuilder::new(re_ctx, self.random_points_positions.len());
         builder
             .batch("Random Points")
             .world_from_obj(glam::Affine3A::from_rotation_x(seconds_since_startup))

crates/re_renderer_examples/picking.rs

@@ -158,10 +158,7 @@ impl framework::Example for Picking {
 
         let mut point_builder = PointCloudBuilder::new(
             re_ctx,
-            self.point_sets
-                .iter()
-                .map(|set| set.positions.len() as u32)
-                .sum(),
+            self.point_sets.iter().map(|set| set.positions.len()).sum(),
         );
         for (i, point_set) in self.point_sets.iter().enumerate() {
             point_builder