diff --git a/project/addons/terrain_3d/extras/shaders/lightweight.gdshader b/project/addons/terrain_3d/extras/shaders/lightweight.gdshader
index 7fb346eb8..3a5030d3a 100644
--- a/project/addons/terrain_3d/extras/shaders/lightweight.gdshader
+++ b/project/addons/terrain_3d/extras/shaders/lightweight.gdshader
@@ -266,12 +266,14 @@ void fragment() {
 	// Recover UVs
 	vec2 uv = UV;
 	vec2 uv2 = UV2;
+	vec2 uv_control = uv;
+    vec2 uv_tex = uv * _vertex_spacing;
 
 	// Lookup offsets, ID and blend weight
 	vec3 region_uv = get_index_uv(uv2);
 	const vec3 offsets = vec3(0, 1, 2);
-	vec2 index_id = floor(uv);
-	vec2 weight = fract(uv);
+	vec2 index_id = floor(uv_control);
+	vec2 weight = fract(uv_control);
 	vec2 invert = 1.0 - weight;
 	vec4 weights = vec4(
 		invert.x * weight.y, // 0
@@ -373,8 +375,6 @@ void fragment() {
 		uint id_read = 0u; // 1 bit per possible ID
 		// world normal adjustment requires acess to previous id during next iteration
 		vec4 nrm = vec4(0.0, 1.0, 0.0, 1.0);
-		// adjust uv scale to account for vertex spacing
-		uv *= _vertex_spacing;
 		for (int i = 0; i < 4; i++) {
 			for (int t = 0; t < 2; t++) {
 				int id = texture_ids[i][t];
@@ -384,7 +384,7 @@ void fragment() {
 					id_read |= mask;
 					float id_w = t_weights[i][t];
 					float id_scale = _texture_uv_scale_array[id] * 0.5;
-					vec2 id_uv = fma(uv, vec2(id_scale), vec2(0.5));
+					vec2 id_uv = fma(uv_tex, vec2(id_scale), vec2(0.5));
 					vec4 i_dd = base_dd * id_scale;
 					vec4 alb = textureGrad(_texture_array_albedo, vec3(id_uv, float(id)), i_dd.xy, i_dd.zw);
 					float world_normal = clamp(fma(TBN[0], vec3(nrm.x), fma(TBN[1], vec3(nrm.z), v_normal * vec3(nrm.y))).y, 0., 1.);