Better WGSL parsing errors

src/shader.rs

@@ -147,7 +147,7 @@ impl ShaderLoader {
         match parser.parse(&source) {
             Ok(module) => Ok(module),
             // TODO handle parsing errors
-            Err(error) => panic!("wgsl parsing error:\n{}", error),
+            Err(error) => panic!("wgsl parsing error:\n{}", error.emit_to_string(&source)),
         }
     }