diff --git a/packages/core/src/filters/spriteMask/SpriteMaskFilter.js b/packages/core/src/filters/spriteMask/SpriteMaskFilter.js
index 91697b7..6d1787b 100644
--- a/packages/core/src/filters/spriteMask/SpriteMaskFilter.js
+++ b/packages/core/src/filters/spriteMask/SpriteMaskFilter.js
@@ -52,6 +52,7 @@
         }
         tex.transform.update();
 
+        this.uniforms.npmAlpha = tex.baseTexture.premultiplyAlpha ? 0.0 : 1.0;
         this.uniforms.mask = tex;
         this.uniforms.otherMatrix = filterManager.calculateSpriteMatrix(this.maskMatrix, maskSprite)
             .prepend(tex.transform.mapCoord);

diff --git a/packages/core/src/filters/spriteMask/SpriteMaskFilter.js b/packages/core/src/filters/spriteMask/SpriteMaskFilter.js
index 91697b7..6d1787b 100644
--- a/packages/core/src/filters/spriteMask/SpriteMaskFilter.js
+++ b/packages/core/src/filters/spriteMask/SpriteMaskFilter.js
@@ -52,6 +52,7 @@
         }
         tex.transform.update();
 
+        this.uniforms.npmAlpha = tex.baseTexture.premultiplyAlpha ? 0.0 : 1.0;
         this.uniforms.mask = tex;
         this.uniforms.otherMatrix = filterManager.calculateSpriteMatrix(this.maskMatrix, maskSprite)
             .prepend(tex.transform.mapCoord);
diff --git a/packages/core/src/filters/spriteMask/spriteMaskFilter.frag b/packages/core/src/filters/spriteMask/spriteMaskFilter.frag
index 0e4aef8..40c1549 100644
--- a/packages/core/src/filters/spriteMask/spriteMaskFilter.frag
+++ b/packages/core/src/filters/spriteMask/spriteMaskFilter.frag
@@ -4,6 +4,7 @@
 uniform sampler2D uSampler;
 uniform sampler2D mask;
 uniform float alpha;
+uniform float npmAlpha;
 uniform vec4 maskClamp;
 
 void main(void)
@@ -16,8 +17,9 @@
 
     vec4 original = texture2D(uSampler, vTextureCoord);
     vec4 masky = texture2D(mask, vMaskCoord);
+    float alphaMul = 1.0 - npmAlpha * (1.0 - masky.a);
 
-    original *= (masky.r * masky.a * alpha * clip);
+    original *= (alphaMul * masky.r * alpha * clip);
 
     gl_FragColor = original;
 }

diff --git a/packages/core/src/filters/spriteMask/SpriteMaskFilter.js b/packages/core/src/filters/spriteMask/SpriteMaskFilter.js
index 91697b7..6d1787b 100644
--- a/packages/core/src/filters/spriteMask/SpriteMaskFilter.js
+++ b/packages/core/src/filters/spriteMask/SpriteMaskFilter.js
@@ -52,6 +52,7 @@
         }
         tex.transform.update();
 
+        this.uniforms.npmAlpha = tex.baseTexture.premultiplyAlpha ? 0.0 : 1.0;
         this.uniforms.mask = tex;
         this.uniforms.otherMatrix = filterManager.calculateSpriteMatrix(this.maskMatrix, maskSprite)
             .prepend(tex.transform.mapCoord);
diff --git a/packages/core/src/filters/spriteMask/spriteMaskFilter.frag b/packages/core/src/filters/spriteMask/spriteMaskFilter.frag
index 0e4aef8..40c1549 100644
--- a/packages/core/src/filters/spriteMask/spriteMaskFilter.frag
+++ b/packages/core/src/filters/spriteMask/spriteMaskFilter.frag
@@ -4,6 +4,7 @@
 uniform sampler2D uSampler;
 uniform sampler2D mask;
 uniform float alpha;
+uniform float npmAlpha;
 uniform vec4 maskClamp;
 
 void main(void)
@@ -16,8 +17,9 @@
 
     vec4 original = texture2D(uSampler, vTextureCoord);
     vec4 masky = texture2D(mask, vMaskCoord);
+    float alphaMul = 1.0 - npmAlpha * (1.0 - masky.a);
 
-    original *= (masky.r * masky.a * alpha * clip);
+    original *= (alphaMul * masky.r * alpha * clip);
 
     gl_FragColor = original;
 }
diff --git a/packages/core/src/mask/MaskSystem.js b/packages/core/src/mask/MaskSystem.js
index 99174c2..ae563f8 100644
--- a/packages/core/src/mask/MaskSystem.js
+++ b/packages/core/src/mask/MaskSystem.js
@@ -113,7 +113,7 @@
         // TODO - may cause issues!
         target.filterArea = maskData.getBounds(true);
 
-        this.renderer.filterSystem.pushFilter(target, alphaMaskFilter);
+        this.renderer.filter.push(target, alphaMaskFilter);
 
         this.alphaMaskIndex++;
     }
@@ -124,7 +124,7 @@
      */
     popSpriteMask()
     {
-        this.renderer.filterSystem.popFilter();
+        this.renderer.filter.pop();
         this.alphaMaskIndex--;
     }
 

diff --git a/packages/core/src/filters/spriteMask/SpriteMaskFilter.js b/packages/core/src/filters/spriteMask/SpriteMaskFilter.js
index 91697b7..6d1787b 100644
--- a/packages/core/src/filters/spriteMask/SpriteMaskFilter.js
+++ b/packages/core/src/filters/spriteMask/SpriteMaskFilter.js
@@ -52,6 +52,7 @@
         }
         tex.transform.update();
 
+        this.uniforms.npmAlpha = tex.baseTexture.premultiplyAlpha ? 0.0 : 1.0;
         this.uniforms.mask = tex;
         this.uniforms.otherMatrix = filterManager.calculateSpriteMatrix(this.maskMatrix, maskSprite)
             .prepend(tex.transform.mapCoord);
diff --git a/packages/core/src/filters/spriteMask/spriteMaskFilter.frag b/packages/core/src/filters/spriteMask/spriteMaskFilter.frag
index 0e4aef8..40c1549 100644
--- a/packages/core/src/filters/spriteMask/spriteMaskFilter.frag
+++ b/packages/core/src/filters/spriteMask/spriteMaskFilter.frag
@@ -4,6 +4,7 @@
 uniform sampler2D uSampler;
 uniform sampler2D mask;
 uniform float alpha;
+uniform float npmAlpha;
 uniform vec4 maskClamp;
 
 void main(void)
@@ -16,8 +17,9 @@
 
     vec4 original = texture2D(uSampler, vTextureCoord);
     vec4 masky = texture2D(mask, vMaskCoord);
+    float alphaMul = 1.0 - npmAlpha * (1.0 - masky.a);
 
-    original *= (masky.r * masky.a * alpha * clip);
+    original *= (alphaMul * masky.r * alpha * clip);
 
     gl_FragColor = original;
 }
diff --git a/packages/core/src/mask/MaskSystem.js b/packages/core/src/mask/MaskSystem.js
index 99174c2..ae563f8 100644
--- a/packages/core/src/mask/MaskSystem.js
+++ b/packages/core/src/mask/MaskSystem.js
@@ -113,7 +113,7 @@
         // TODO - may cause issues!
         target.filterArea = maskData.getBounds(true);
 
-        this.renderer.filterSystem.pushFilter(target, alphaMaskFilter);
+        this.renderer.filter.push(target, alphaMaskFilter);
 
         this.alphaMaskIndex++;
     }
@@ -124,7 +124,7 @@
      */
     popSpriteMask()
     {
-        this.renderer.filterSystem.popFilter();
+        this.renderer.filter.pop();
         this.alphaMaskIndex--;
     }
 
diff --git a/packages/display/src/DisplayObject.js b/packages/display/src/DisplayObject.js
index 7f45a81..ef4f0d7 100644
--- a/packages/display/src/DisplayObject.js
+++ b/packages/display/src/DisplayObject.js
@@ -582,6 +582,8 @@
      * PIXI.Graphics or a PIXI.Sprite object. This allows for much faster masking in canvas as it
      * utilises shape clipping. To remove a mask, set this property to null.
      *
+     * For sprite mask both alpha and red channel are used. Black mask is the same as transparent mask.
+     *
      * @todo For the moment, PIXI.CanvasRenderer doesn't support PIXI.Sprite as mask.
      *
      * @member {PIXI.Graphics|PIXI.Sprite}