diff --git a/src/mol-gl/shader/direct-volume.frag.ts b/src/mol-gl/shader/direct-volume.frag.ts
index ce61ae895fe13f54582e7b13008e026348e67392..8c6a0d4dc32acdb260ad70671e9422eed3f08455 100644
--- a/src/mol-gl/shader/direct-volume.frag.ts
+++ b/src/mol-gl/shader/direct-volume.frag.ts
@@ -53,9 +53,12 @@ uniform int uGroupCount;
 #if defined(dColorMarker)
     uniform vec3 uHighlightColor;
     uniform vec3 uSelectColor;
+    uniform vec3 uDimColor;
     uniform float uHighlightStrength;
     uniform float uSelectStrength;
+    uniform float uDimStrength;
     uniform int uMarkerPriority;
+    uniform float uMarkerAverage;
 
     uniform float uMarker;
     uniform vec2 uMarkerTexDim;