diff --git a/src/core/renderers/webgl/filters/SpriteMaskFilter.js b/src/core/renderers/webgl/filters/SpriteMaskFilter.js
index b8ebc54..da6a427 100644
--- a/src/core/renderers/webgl/filters/SpriteMaskFilter.js
+++ b/src/core/renderers/webgl/filters/SpriteMaskFilter.js
@@ -21,6 +21,7 @@
         fs.readFileSync(__dirname + '/spriteMaskFilter.frag', 'utf8'),
         {
             mask:           { type: 'sampler2D', value: sprite._texture },
+            alpha:          { type: 'f', value: 1},
             otherMatrix:    { type: 'mat3', value: maskMatrix.toArray(true) }
         }
     );
@@ -49,6 +50,7 @@
     filterManager.calculateMappedMatrix(input.frame, this.maskSprite, this.maskMatrix);
 
     this.uniforms.otherMatrix.value = this.maskMatrix.toArray(true);
+    this.uniforms.alpha.value = this.maskSprite.worldAlpha;
 
     var shader = this.getShader(renderer);
      // draw the filter...

diff --git a/src/core/renderers/webgl/filters/SpriteMaskFilter.js b/src/core/renderers/webgl/filters/SpriteMaskFilter.js
index b8ebc54..da6a427 100644
--- a/src/core/renderers/webgl/filters/SpriteMaskFilter.js
+++ b/src/core/renderers/webgl/filters/SpriteMaskFilter.js
@@ -21,6 +21,7 @@
         fs.readFileSync(__dirname + '/spriteMaskFilter.frag', 'utf8'),
         {
             mask:           { type: 'sampler2D', value: sprite._texture },
+            alpha:          { type: 'f', value: 1},
             otherMatrix:    { type: 'mat3', value: maskMatrix.toArray(true) }
         }
     );
@@ -49,6 +50,7 @@
     filterManager.calculateMappedMatrix(input.frame, this.maskSprite, this.maskMatrix);
 
     this.uniforms.otherMatrix.value = this.maskMatrix.toArray(true);
+    this.uniforms.alpha.value = this.maskSprite.worldAlpha;
 
     var shader = this.getShader(renderer);
      // draw the filter...
diff --git a/src/core/renderers/webgl/filters/spriteMaskFilter.frag b/src/core/renderers/webgl/filters/spriteMaskFilter.frag
index a928623..ff8880c 100644
--- a/src/core/renderers/webgl/filters/spriteMaskFilter.frag
+++ b/src/core/renderers/webgl/filters/spriteMaskFilter.frag
@@ -5,6 +5,7 @@
 varying vec4 vColor;
 
 uniform sampler2D uSampler;
+uniform float alpha;
 uniform sampler2D mask;
 
 void main(void)
@@ -15,6 +16,6 @@
     float clip = 1.0 - max(text.y, text.x);
     vec4 original = texture2D(uSampler, vTextureCoord);
     vec4 masky = texture2D(mask, vMaskCoord);
-    original *= (masky.r * masky.a * clip);
+    original *= (masky.r * masky.a * alpha * clip);
     gl_FragColor = original;
 }