diff --git a/src/core/renderers/webgl/filters/filterTransforms.js b/src/core/renderers/webgl/filters/filterTransforms.js
index 851ad69..f955a9d 100644
--- a/src/core/renderers/webgl/filters/filterTransforms.js
+++ b/src/core/renderers/webgl/filters/filterTransforms.js
@@ -40,36 +40,13 @@
 // this will map the filter coord so that a texture can be used based on the transform of a sprite
 export function calculateSpriteMatrix(outputMatrix, filterArea, textureSize, sprite)
 {
-    const worldTransform = sprite.worldTransform.copy(Matrix.TEMP_MATRIX);
     const texture = sprite._texture.baseTexture;
-
-    // TODO unwrap?
-    const mappedMatrix = outputMatrix.identity();
-
-    // scale..
-    const ratio = textureSize.height / textureSize.width;
-
-    mappedMatrix.translate(filterArea.x / textureSize.width, filterArea.y / textureSize.height);
-
-    mappedMatrix.scale(1, ratio);
-
-    const translateScaleX = (textureSize.width / texture.width);
-    const translateScaleY = (textureSize.height / texture.height);
-
-    worldTransform.tx /= texture.width * translateScaleX;
-
-    // this...?  free beer for anyone who can explain why this makes sense!
-    worldTransform.ty /= texture.width * translateScaleX;
-    // worldTransform.ty /= texture.height * translateScaleY;
+    const mappedMatrix = outputMatrix.set(textureSize.width, 0, 0, textureSize.height, filterArea.x, filterArea.y);
+    const worldTransform = sprite.worldTransform.copy(Matrix.TEMP_MATRIX);
 
     worldTransform.invert();
     mappedMatrix.prepend(worldTransform);
-
-    // apply inverse scale..
-    mappedMatrix.scale(1, 1 / ratio);
-
-    mappedMatrix.scale(translateScaleX, translateScaleY);
-
+    mappedMatrix.scale(1.0 / texture.width, 1.0 / texture.height);
     mappedMatrix.translate(sprite.anchor.x, sprite.anchor.y);
 
     return mappedMatrix;