Update .gitignore

.gitignore

@@ -3,7 +3,5 @@
 *.pdf
 *.html
 source.zip
-
-.aider*
 flake.lock
 

src/main.rs

@@ -149,14 +149,18 @@ unsafe fn draw_scene(node: &scene_graph::SceneNode, transform_loc: i32, normal_l
         let mvp = view_projection * new_transform;
         gl::UniformMatrix4fv(transform_loc, 1, gl::FALSE, mvp.as_ptr());
         let nm4 = glm::transpose(&glm::inverse(&new_transform));
-        let normal_matrix = glm::mat3(&nm4);
+        let normal_matrix = glm::mat3(
+            nm4[(0,0)], nm4[(0,1)], nm4[(0,2)],
+            nm4[(1,0)], nm4[(1,1)], nm4[(1,2)],
+            nm4[(2,0)], nm4[(2,1)], nm4[(2,2)],
+        );
         gl::UniformMatrix3fv(normal_loc, 1, gl::FALSE, normal_matrix.as_ptr());
         gl::BindVertexArray(node.vao_id);
         gl::DrawElements(gl::TRIANGLES, node.index_count, gl::UNSIGNED_INT, ptr::null());
     }
     // Recurse to children
     for &child in &node.children {
-        draw_scene(&*child, transform_loc, view_projection, &new_transform);
+        draw_scene(&*child, transform_loc, normal_loc, view_projection, &new_transform);
     }
 }