diff --git a/packages/core/src/filters/FilterSystem.js b/packages/core/src/filters/FilterSystem.js
index 210a011..6f01b1e 100644
--- a/packages/core/src/filters/FilterSystem.js
+++ b/packages/core/src/filters/FilterSystem.js
@@ -423,16 +423,27 @@
 
     /**
      * Gets extra render texture to use inside current filter
+     * To be compliant with older filters, you can use params in any order
      *
-     * @param {number} resolution resolution of the renderTexture
+     * @param {PIXI.RenderTexture} [input] renderTexture from which size and resolution will be copied
+     * @param {number} [resolution] override resolution of the renderTexture
      * @returns {PIXI.RenderTexture}
      */
-    getFilterTexture(resolution)
+    getFilterTexture(input, resolution)
     {
-        const rt = this.activeState.renderTexture;
-        const filterTexture = this.texturePool.getOptimalTexture(rt.width, rt.height, resolution || rt.resolution);
+        if (typeof input === 'number')
+        {
+            const swap = input;
 
-        filterTexture.filterFrame = rt.filterFrame;
+            input = resolution;
+            resolution = swap;
+        }
+
+        input = input || this.activeState.renderTexture;
+
+        const filterTexture = this.texturePool.getOptimalTexture(input.width, input.height, resolution || input.resolution);
+
+        filterTexture.filterFrame = input.filterFrame;
 
         return filterTexture;
     }

diff --git a/packages/core/src/filters/FilterSystem.js b/packages/core/src/filters/FilterSystem.js
index 210a011..6f01b1e 100644
--- a/packages/core/src/filters/FilterSystem.js
+++ b/packages/core/src/filters/FilterSystem.js
@@ -423,16 +423,27 @@
 
     /**
      * Gets extra render texture to use inside current filter
+     * To be compliant with older filters, you can use params in any order
      *
-     * @param {number} resolution resolution of the renderTexture
+     * @param {PIXI.RenderTexture} [input] renderTexture from which size and resolution will be copied
+     * @param {number} [resolution] override resolution of the renderTexture
      * @returns {PIXI.RenderTexture}
      */
-    getFilterTexture(resolution)
+    getFilterTexture(input, resolution)
     {
-        const rt = this.activeState.renderTexture;
-        const filterTexture = this.texturePool.getOptimalTexture(rt.width, rt.height, resolution || rt.resolution);
+        if (typeof input === 'number')
+        {
+            const swap = input;
 
-        filterTexture.filterFrame = rt.filterFrame;
+            input = resolution;
+            resolution = swap;
+        }
+
+        input = input || this.activeState.renderTexture;
+
+        const filterTexture = this.texturePool.getOptimalTexture(input.width, input.height, resolution || input.resolution);
+
+        filterTexture.filterFrame = input.filterFrame;
 
         return filterTexture;
     }
diff --git a/packages/core/src/renderTexture/RenderTexture.js b/packages/core/src/renderTexture/RenderTexture.js
index ecf5080..245f96a 100644
--- a/packages/core/src/renderTexture/RenderTexture.js
+++ b/packages/core/src/renderTexture/RenderTexture.js
@@ -91,8 +91,10 @@
         this.valid = true;
 
         /**
-         * FilterSystem temporary storage
-         * @protected
+         * Stores `sourceFrame` when this texture is inside current filter stack.
+         * You can read it inside filters.
+         *
+         * @readonly
          * @member {PIXI.Rectangle}
          */
         this.filterFrame = null;

diff --git a/packages/core/src/filters/FilterSystem.js b/packages/core/src/filters/FilterSystem.js
index 210a011..6f01b1e 100644
--- a/packages/core/src/filters/FilterSystem.js
+++ b/packages/core/src/filters/FilterSystem.js
@@ -423,16 +423,27 @@
 
     /**
      * Gets extra render texture to use inside current filter
+     * To be compliant with older filters, you can use params in any order
      *
-     * @param {number} resolution resolution of the renderTexture
+     * @param {PIXI.RenderTexture} [input] renderTexture from which size and resolution will be copied
+     * @param {number} [resolution] override resolution of the renderTexture
      * @returns {PIXI.RenderTexture}
      */
-    getFilterTexture(resolution)
+    getFilterTexture(input, resolution)
     {
-        const rt = this.activeState.renderTexture;
-        const filterTexture = this.texturePool.getOptimalTexture(rt.width, rt.height, resolution || rt.resolution);
+        if (typeof input === 'number')
+        {
+            const swap = input;
 
-        filterTexture.filterFrame = rt.filterFrame;
+            input = resolution;
+            resolution = swap;
+        }
+
+        input = input || this.activeState.renderTexture;
+
+        const filterTexture = this.texturePool.getOptimalTexture(input.width, input.height, resolution || input.resolution);
+
+        filterTexture.filterFrame = input.filterFrame;
 
         return filterTexture;
     }
diff --git a/packages/core/src/renderTexture/RenderTexture.js b/packages/core/src/renderTexture/RenderTexture.js
index ecf5080..245f96a 100644
--- a/packages/core/src/renderTexture/RenderTexture.js
+++ b/packages/core/src/renderTexture/RenderTexture.js
@@ -91,8 +91,10 @@
         this.valid = true;
 
         /**
-         * FilterSystem temporary storage
-         * @protected
+         * Stores `sourceFrame` when this texture is inside current filter stack.
+         * You can read it inside filters.
+         *
+         * @readonly
          * @member {PIXI.Rectangle}
          */
         this.filterFrame = null;
diff --git a/packages/core/src/renderTexture/RenderTexturePool.js b/packages/core/src/renderTexture/RenderTexturePool.js
index ce06ae1..436f5db 100644
--- a/packages/core/src/renderTexture/RenderTexturePool.js
+++ b/packages/core/src/renderTexture/RenderTexturePool.js
@@ -8,6 +8,9 @@
  * Texture pool, used by FilterSystem and plugins
  * Stores collection of temporary pow2 or screen-sized renderTextures
  *
+ * If you use custom RenderTexturePool for your filters, you can use methods
+ * `getFilterTexture` and `returnFilterTexture` same as in
+ *
  * @class
  * @memberof PIXI
  */
@@ -95,18 +98,20 @@
     }
 
     /**
-     * Gets extra texture of the same size as current renderTexture
+     * Gets extra texture of the same size as input renderTexture
      *
-     * @param {number} [resolution] resolution, by default its the same as in current renderTexture
+     * `getFilterTexture(input, 0.5)` or `getFilterTexture(0.5, input)`
+     *
+     * @param {PIXI.RenderTexture} input renderTexture from which size and resolution will be copied
+     * @param {number} [resolution] override resolution of the renderTexture
+     *  It overrides, it does not multiply
      * @returns {PIXI.RenderTexture}
      */
-    getFilterTexture(resolution)
+    getFilterTexture(input, resolution)
     {
-        const rt = this.renderer.renderTexture.current;
+        const filterTexture = this.getOptimalTexture(input.width, input.height, resolution || input.resolution);
 
-        const filterTexture = this.getOptimalTexture(rt.width, rt.height, resolution || rt.baseTexture.resolution);
-
-        filterTexture.filterFrame = rt.filterFrame;
+        filterTexture.filterFrame = input.filterFrame;
 
         return filterTexture;
     }
@@ -163,7 +168,7 @@
      * If screen size was changed, drops all screen-sized textures,
      * sets new screen size, sets `enableFullScreen` to true
      *
-     * Size is measured in pixels, `renderer.view` can be passed here.
+     * Size is measured in pixels, `renderer.view` can be passed here, not `renderer.screen`
      *
      * @param {PIXI.ISize} size - Initial size of screen
      */

diff --git a/packages/core/src/filters/FilterSystem.js b/packages/core/src/filters/FilterSystem.js
index 210a011..6f01b1e 100644
--- a/packages/core/src/filters/FilterSystem.js
+++ b/packages/core/src/filters/FilterSystem.js
@@ -423,16 +423,27 @@
 
     /**
      * Gets extra render texture to use inside current filter
+     * To be compliant with older filters, you can use params in any order
      *
-     * @param {number} resolution resolution of the renderTexture
+     * @param {PIXI.RenderTexture} [input] renderTexture from which size and resolution will be copied
+     * @param {number} [resolution] override resolution of the renderTexture
      * @returns {PIXI.RenderTexture}
      */
-    getFilterTexture(resolution)
+    getFilterTexture(input, resolution)
     {
-        const rt = this.activeState.renderTexture;
-        const filterTexture = this.texturePool.getOptimalTexture(rt.width, rt.height, resolution || rt.resolution);
+        if (typeof input === 'number')
+        {
+            const swap = input;
 
-        filterTexture.filterFrame = rt.filterFrame;
+            input = resolution;
+            resolution = swap;
+        }
+
+        input = input || this.activeState.renderTexture;
+
+        const filterTexture = this.texturePool.getOptimalTexture(input.width, input.height, resolution || input.resolution);
+
+        filterTexture.filterFrame = input.filterFrame;
 
         return filterTexture;
     }
diff --git a/packages/core/src/renderTexture/RenderTexture.js b/packages/core/src/renderTexture/RenderTexture.js
index ecf5080..245f96a 100644
--- a/packages/core/src/renderTexture/RenderTexture.js
+++ b/packages/core/src/renderTexture/RenderTexture.js
@@ -91,8 +91,10 @@
         this.valid = true;
 
         /**
-         * FilterSystem temporary storage
-         * @protected
+         * Stores `sourceFrame` when this texture is inside current filter stack.
+         * You can read it inside filters.
+         *
+         * @readonly
          * @member {PIXI.Rectangle}
          */
         this.filterFrame = null;
diff --git a/packages/core/src/renderTexture/RenderTexturePool.js b/packages/core/src/renderTexture/RenderTexturePool.js
index ce06ae1..436f5db 100644
--- a/packages/core/src/renderTexture/RenderTexturePool.js
+++ b/packages/core/src/renderTexture/RenderTexturePool.js
@@ -8,6 +8,9 @@
  * Texture pool, used by FilterSystem and plugins
  * Stores collection of temporary pow2 or screen-sized renderTextures
  *
+ * If you use custom RenderTexturePool for your filters, you can use methods
+ * `getFilterTexture` and `returnFilterTexture` same as in
+ *
  * @class
  * @memberof PIXI
  */
@@ -95,18 +98,20 @@
     }
 
     /**
-     * Gets extra texture of the same size as current renderTexture
+     * Gets extra texture of the same size as input renderTexture
      *
-     * @param {number} [resolution] resolution, by default its the same as in current renderTexture
+     * `getFilterTexture(input, 0.5)` or `getFilterTexture(0.5, input)`
+     *
+     * @param {PIXI.RenderTexture} input renderTexture from which size and resolution will be copied
+     * @param {number} [resolution] override resolution of the renderTexture
+     *  It overrides, it does not multiply
      * @returns {PIXI.RenderTexture}
      */
-    getFilterTexture(resolution)
+    getFilterTexture(input, resolution)
     {
-        const rt = this.renderer.renderTexture.current;
+        const filterTexture = this.getOptimalTexture(input.width, input.height, resolution || input.resolution);
 
-        const filterTexture = this.getOptimalTexture(rt.width, rt.height, resolution || rt.baseTexture.resolution);
-
-        filterTexture.filterFrame = rt.filterFrame;
+        filterTexture.filterFrame = input.filterFrame;
 
         return filterTexture;
     }
@@ -163,7 +168,7 @@
      * If screen size was changed, drops all screen-sized textures,
      * sets new screen size, sets `enableFullScreen` to true
      *
-     * Size is measured in pixels, `renderer.view` can be passed here.
+     * Size is measured in pixels, `renderer.view` can be passed here, not `renderer.screen`
      *
      * @param {PIXI.ISize} size - Initial size of screen
      */
diff --git a/packages/core/src/textures/Texture.js b/packages/core/src/textures/Texture.js
index 3691cb3..6e9f4d3 100644
--- a/packages/core/src/textures/Texture.js
+++ b/packages/core/src/textures/Texture.js
@@ -496,6 +496,16 @@
     }
 
     /**
+     * Returns resolution of baseTexture
+     *
+     * @readonly
+     */
+    get resolution()
+    {
+        return this.baseTexture.resolution;
+    }
+
+    /**
      * The frame specifies the region of the base texture that this texture uses.
      * Please call `updateUvs()` after you change coordinates of `frame` manually.
      *