Use correct normal for tangent calculations

shaders/triangle.vert

@@ -31,21 +31,23 @@ out gl_PerVertex {
 };
 
 void main() {
-    // Vertex position
+    // Vertex position in camera
     gl_Position = ubo.projection * ubo.view * push.model * vec4(position, 1.0);
+
+    // Vertex position in world
     position_wld = vec3(push.model * vec4(position, 1.0));
 
     // Just interpolate UV coords, no transformation needed
     tex_coords = uv;
 
-    // This should probably be in object space? idk
+    // Normal _direction_ in world (not use atm)
     normal_wld = vec3(mat3(transpose(inverse(push.model))) * normal);
 
     // Tangent->object space matrix
     vec3 tangent3 = vec3(tangent.xy, 1.0);
-    vec3 bitangent = -cross(tangent3, normal_wld);
+    vec3 bitangent = -cross(tangent3, normal);
     vec3 t = normalize(vec3(push.model * vec4(tangent3, 0.0)));
     vec3 b = normalize(vec3(push.model * vec4(bitangent, 0.0)));
-    vec3 n = normalize(vec3(push.model * vec4(normal_wld, 0.0)));
+    vec3 n = normalize(vec3(push.model * vec4(normal, 0.0)));
     tbn = mat3(t, b, n);
 }