🚧 checkpoint

src/bin/pumpkin.rs

@@ -208,14 +208,14 @@ fn main () {
 		ShaderProgram::new (&vert_shader, &frag_shader).unwrap ()
 	};
 	
-	let attr_lookup: HashMap <_, &str> = HashMap::from_iter ({
+	let attr_lookup: Vec <(_, &str)> = {
 		use renderable_model::attributes::*;
 		vec! [
-			(POS, "pos"),
-			(UV, "uv"),
-			(NORMAL, "normal"),
-		].into_iter ()
-	});
+			(POS, "attr_pos"),
+			(UV, "attr_uv"),
+			(NORMAL, "attr_normal"),
+		]
+	};
 	
 	let uni_lookup: HashMap <_, &str> = HashMap::from_iter ({
 		use uniforms::*;
@@ -230,23 +230,17 @@ fn main () {
 		].into_iter ()
 	});
 	
-	let attrs = {
-		let attrs = shader_program.get_attribute_locations (attr_lookup.values ().copied ());
+	let get_shader_attrs = |shader: &ShaderProgram| {
+		let attrs = shader.get_attribute_locations (attr_lookup.iter ().map (|(_, v)| v).copied ());
 		
 		HashMap::from_iter (
-			attr_lookup.iter ()
-			.map (|(key, name)| (*key, *attrs.get (*name).unwrap ()))
+			attr_lookup.iter ().enumerate ()
+			.map (|(i, _)| (i, attrs [i]))
 		)
 	};
 	
-	let shadow_attrs = {
-		let attrs = shadow_shader.get_attribute_locations (attr_lookup.values ().copied ());
-		
-		HashMap::from_iter (
-			attr_lookup.iter ()
-			.map (|(key, name)| (*key, *attrs.get (*name).unwrap ()))
-		)
-	};
+	let attrs = get_shader_attrs (&shader_program);
+	let shadow_attrs = get_shader_attrs (&shadow_shader);
 	
 	let unis = {
 		let unis = shader_program.get_uniform_locations (uni_lookup.values ().copied ());

src/shader.rs

@@ -164,27 +164,26 @@ impl ShaderProgram {
 		}
 	}
 	
+	// This could be an iterator adapter but the code is too long
+	// and it's only called during startup so I don't care.
+	
 	pub fn get_attribute_locations <'a, I> (&self, names: I)
-	-> HashMap <String, Option <u32>>
+	-> Vec <Option <u32>>
 	where I: Iterator <Item = &'a str>
 	{
 		self.use_program ();
 		
 		names
 		.map (|name| {
-			let mut s = String::from ("attr_");
-			s.push_str (name);
-			
-			let c_str = CString::new (s.as_bytes ()).unwrap ();
+			let c_str = CString::new (name.as_bytes ()).unwrap ();
 			let loc = unsafe {
 				gl::GetAttribLocation (self.id, c_str.as_ptr ())
 			};
-			let loc = match loc.try_into () {
+			
+			match loc.try_into () {
 				Ok (loc) => Some (loc),
 				_ => None,
-			};
-			
-			(String::from (name), loc)
+			}
 		})
 		.collect ()
 	}