diff --git a/src/core/renderers/webgl/managers/FilterManager.js b/src/core/renderers/webgl/managers/FilterManager.js
index 53e4b47..6c7422d 100644
--- a/src/core/renderers/webgl/managers/FilterManager.js
+++ b/src/core/renderers/webgl/managers/FilterManager.js
@@ -312,7 +312,7 @@
         // see displacementFilter fragment shader for an example
         if (shader.uniforms.filterClamp)
         {
-            currentState = this.filterData.stack[this.filterData.index];
+            currentState = currentState || this.filterData.stack[this.filterData.index];
 
             const filterClamp = shader.uniforms.filterClamp;