1 files changed, 2 insertions, 1 deletions
diff --git a/src/datavisualization/engine/shaders/surfaceShadowFlat.frag b/src/datavisualization/engine/shaders/surfaceShadowFlat.frag
index b2f2af74..9b9305ab 100644
--- a/src/datavisualization/engine/shaders/surfaceShadowFlat.frag
+++ b/src/datavisualization/engine/shaders/surfaceShadowFlat.frag
@@ -63,9 +63,10 @@ void main() {
     }
 
     gl_FragColor.rgb =
-        visibility * (materialAmbientColor +
+        (materialAmbientColor +
         materialDiffuseColor * lightStrength * cosTheta +
         materialSpecularColor * lightStrength * pow(cosAlpha, 10));
     gl_FragColor.a = 1.0;
+    gl_FragColor.rgb = visibility * clamp(gl_FragColor.rgb, 0.0, 1.0);
 }