Added notes

src/renderer/buffers/nodes.rs

@@ -108,7 +108,8 @@ impl Nodes {
         if self.dirty {
             self.dirty = false;
             
-            let timer = Instant::now();
+            // Note: this takes usually 2ms, up to 9ms
+            // TODO: Maybe instead of converting u32 to u8, just store u8 and convert them when writing/reading
 
             // Convert u32 node buffer to u8
             let node_origin = wgpu::Origin3d{ x:0, y: 0, z: 0 };
@@ -121,9 +122,6 @@ impl Nodes {
                wgpu::TextureCopyView { texture: texture, mip_level: 0, origin: node_origin }, &node_bytes[..],
                wgpu::TextureDataLayout { offset: 0, bytes_per_row: 4*node_size.width, rows_per_image: node_size.height }, node_size
             );
-
-
-            println!("Write nodes: {} ms", timer.elapsed().as_millis());
         }
     }
 }