multi threaded image load

src/main.rs

@@ -97,10 +97,18 @@ impl GraphicsData {
 
 		//idk how to do this gooder lol
 		let mut double_map=std::collections::HashMap::<u32,u32>::new();
-		let mut texture_views:Vec<wgpu::TextureView>=Vec::with_capacity(indexed_models.textures.len());
+		let mut texture_loading_threads=Vec::new();
 		for (i,t) in indexed_models.textures.iter().enumerate(){
 			if let Ok(mut file) = std::fs::File::open(std::path::Path::new(&format!("textures/{}.dds",t))){
-				let image = ddsfile::Dds::read(&mut file).unwrap();
+				double_map.insert(i as u32, texture_loading_threads.len() as u32);
+				texture_loading_threads.push(std::thread::spawn(move ||{
+					(i,ddsfile::Dds::read(&mut file).unwrap())
+				}));
+			}
+		}
+
+		let texture_views:Vec<wgpu::TextureView>=texture_loading_threads.into_iter().map(|t|{
+			let (i,image)=t.join().unwrap();
 
 			let (mut width,mut height)=(image.get_width(),image.get_height());
 
@@ -141,15 +149,13 @@ impl GraphicsData {
 				},
 				&image.data,
 			);
-
-				double_map.insert(i as u32, texture_views.len() as u32);
-				texture_views.push(texture.create_view(&wgpu::TextureViewDescriptor {
+			texture.create_view(&wgpu::TextureViewDescriptor {
 				label: Some(format!("Texture{} View",i).as_str()),
 				dimension: Some(wgpu::TextureViewDimension::D2),
 				..wgpu::TextureViewDescriptor::default()
-				}));
-			}
-		}
+			})
+		}).collect();
+
 		let indexed_models_len=indexed_models.models.len();
 		//split groups with different textures into separate models
 		//the models received here are supposed to be tightly packed, i.e. no code needs to check if two models are using the same groups.