diff --git a/src/webview/mesh/webview_extend_standard_material.wgsl b/src/webview/mesh/webview_extend_standard_material.wgsl
index a002bf8..0fef98a 100644
--- a/src/webview/mesh/webview_extend_standard_material.wgsl
+++ b/src/webview/mesh/webview_extend_standard_material.wgsl
@@ -20,21 +20,12 @@ fn fragment(
     @builtin(front_facing) is_front: bool,
 ) -> FragmentOutput {
     var out: FragmentOutput;
-    var pbr_input = pbr_input_from_standard_material(in, is_front);
     
-    // var alpha = pbr_input.material.base_color.a;
-    
-    if overlay_color(in.uv).a > 0.0 {
-        pbr_input.material.base_color *= surface_color(in.uv);
-        pbr_input.material.base_color *= overlay_color(in.uv);
-    } else {
-        pbr_input.material.base_color *= surface_color(in.uv);
-    }
-    
-    pbr_input.material.base_color = alpha_discard(pbr_input.material, pbr_input.material.base_color);
-    
-    out.color = pbr_input.material.base_color;
-    // out.color.a *= alpha;
+    var surface = surface_color(in.uv);
+    var overlay = overlay_color(in.uv);
+    var result_rgb = mix(surface.rgb, overlay.rgb, overlay.a);
+
+    out.color = vec4(result_rgb, 1.0);
 
     return out;
 }