diff --git a/app-proto/full-interface/src/inversive.frag b/app-proto/full-interface/src/inversive.frag
index 8327f47..b7fb100 100644
--- a/app-proto/full-interface/src/inversive.frag
+++ b/app-proto/full-interface/src/inversive.frag
@@ -209,10 +209,8 @@ void main() {
     // composite the sphere fragments
     vec3 color = vec3(0.);
     for (int i = layer_cnt-1; i >= layer_threshold; --i) {
-        if (frags[i].pt.z < 0.) {
-            vec4 frag_color = frags[i].color;
-            color = mix(color, frag_color.rgb, frag_color.a);
-        }
+        vec4 frag_color = frags[i].color;
+        color = mix(color, frag_color.rgb, frag_color.a);
     }
     outColor = vec4(sRGB(color), 1.);
 }
\ No newline at end of file
diff --git a/app-proto/inversive-display/src/inversive.frag b/app-proto/inversive-display/src/inversive.frag
index fc2a474..f76995d 100644
--- a/app-proto/inversive-display/src/inversive.frag
+++ b/app-proto/inversive-display/src/inversive.frag
@@ -205,10 +205,8 @@ void main() {
     // composite the sphere fragments
     vec3 color = vec3(0.);
     for (int i = layer_cnt-1; i >= layer_threshold; --i) {
-        if (frags[i].pt.z < 0.) {
-            vec4 frag_color = frags[i].color;
-            color = mix(color, frag_color.rgb, frag_color.a);
-        }
+        vec4 frag_color = frags[i].color;
+        color = mix(color, frag_color.rgb, frag_color.a);
     }
     outColor = vec4(sRGB(color), 1.);
 }
\ No newline at end of file