diff --git a/src/filters/blur/SmartBlurFilter.js b/src/filters/blur/SmartBlurFilter.js
index effcb6e..649919c 100644
--- a/src/filters/blur/SmartBlurFilter.js
+++ b/src/filters/blur/SmartBlurFilter.js
@@ -15,7 +15,11 @@
         // vertex shader
         null,
         // fragment shader
-        fs.readFileSync(__dirname + '/smartBlur.frag', 'utf8')
+        fs.readFileSync(__dirname + '/smartBlur.frag', 'utf8'),
+        // uniforms
+        {
+          delta: { type: 'v2', value: { x: 0.1, y: 0.0 } }
+        }
     );
 }
 

diff --git a/src/filters/blur/SmartBlurFilter.js b/src/filters/blur/SmartBlurFilter.js
index effcb6e..649919c 100644
--- a/src/filters/blur/SmartBlurFilter.js
+++ b/src/filters/blur/SmartBlurFilter.js
@@ -15,7 +15,11 @@
         // vertex shader
         null,
         // fragment shader
-        fs.readFileSync(__dirname + '/smartBlur.frag', 'utf8')
+        fs.readFileSync(__dirname + '/smartBlur.frag', 'utf8'),
+        // uniforms
+        {
+          delta: { type: 'v2', value: { x: 0.1, y: 0.0 } }
+        }
     );
 }
 
diff --git a/src/filters/blur/smartBlur.frag b/src/filters/blur/smartBlur.frag
index 625039e..93eaeab 100644
--- a/src/filters/blur/smartBlur.frag
+++ b/src/filters/blur/smartBlur.frag
@@ -3,7 +3,7 @@
 varying vec2 vTextureCoord;
 
 uniform sampler2D uSampler;
-const vec2 delta = vec2(1.0/10.0, 0.0);
+uniform vec2 delta;
 
 float random(vec3 scale, float seed)
 {