diff --git a/manimlib/mobject/types/surface.py b/manimlib/mobject/types/surface.py
index 5c8b6f6c..10d4ab77 100644
--- a/manimlib/mobject/types/surface.py
+++ b/manimlib/mobject/types/surface.py
@@ -320,7 +320,9 @@ class TexturedSurface(Surface):
         surf = self.uv_surface
         nu, nv = surf.resolution
         self.resize_points(surf.get_num_points())
+        self.resolution = surf.resolution
         self.data['point'][:] = surf.data['point']
+        self.data['normal'][:] = surf.data['normal']
         self.data['opacity'][:, 0] = surf.data["rgba"][:, 3]
         self.data["im_coords"] = np.array([
             [u, v]
diff --git a/manimlib/shaders/textured_surface/vert.glsl b/manimlib/shaders/textured_surface/vert.glsl
index 74c76515..276caeed 100644
--- a/manimlib/shaders/textured_surface/vert.glsl
+++ b/manimlib/shaders/textured_surface/vert.glsl
@@ -1,8 +1,7 @@
 #version 330
 
 in vec3 point;
-in vec3 du_point;
-in vec3 dv_point;
+in vec3 normal;
 in vec2 im_coords;
 in float opacity;
 
@@ -16,7 +15,7 @@ out float v_opacity;
 
 void main(){
     v_point = point;
-    v_normal = get_unit_normal(point, du_point, dv_point);
+    v_normal = normal;
     v_im_coords = im_coords;
     v_opacity = opacity;
     emit_gl_Position(point);