diff --git a/bundles/pixi.js/pixi.js.d.ts b/bundles/pixi.js/pixi.js.d.ts
index ea5e6c0..83c4075 100644
--- a/bundles/pixi.js/pixi.js.d.ts
+++ b/bundles/pixi.js/pixi.js.d.ts
@@ -3528,7 +3528,8 @@
             defaultMaskStack: Array<Graphics>;
             defaultFilterStack: Array<filters.IFilterState>;
             renderTexture: RenderTexture | null;
-            destinationFrame: Rectangle;
+            readonly sourceFrame: Rectangle;
+            readonly destinationFrame: Rectangle;
 
             bind(renderTexture: RenderTexture, sourceFrame: Rectangle, destinationFrame: Rectangle): void;
 

diff --git a/bundles/pixi.js/pixi.js.d.ts b/bundles/pixi.js/pixi.js.d.ts
index ea5e6c0..83c4075 100644
--- a/bundles/pixi.js/pixi.js.d.ts
+++ b/bundles/pixi.js/pixi.js.d.ts
@@ -3528,7 +3528,8 @@
             defaultMaskStack: Array<Graphics>;
             defaultFilterStack: Array<filters.IFilterState>;
             renderTexture: RenderTexture | null;
-            destinationFrame: Rectangle;
+            readonly sourceFrame: Rectangle;
+            readonly destinationFrame: Rectangle;
 
             bind(renderTexture: RenderTexture, sourceFrame: Rectangle, destinationFrame: Rectangle): void;
 
diff --git a/packages/core/src/filters/FilterSystem.js b/packages/core/src/filters/FilterSystem.js
index 788efd1..81dc329 100644
--- a/packages/core/src/filters/FilterSystem.js
+++ b/packages/core/src/filters/FilterSystem.js
@@ -199,12 +199,12 @@
 
         state.target = target;
 
-        state.sourceFrame = target.filterArea || target.getBounds(true);
+        state.sourceFrame.copyFrom(target.filterArea || target.getBounds(true));
 
         state.sourceFrame.pad(padding);
         if (autoFit)
         {
-            state.sourceFrame.fit(this.renderer.renderTexture.destinationFrame);
+            state.sourceFrame.fit(this.renderer.renderTexture.sourceFrame);
         }
 
         // round to whole number based on resolution

diff --git a/bundles/pixi.js/pixi.js.d.ts b/bundles/pixi.js/pixi.js.d.ts
index ea5e6c0..83c4075 100644
--- a/bundles/pixi.js/pixi.js.d.ts
+++ b/bundles/pixi.js/pixi.js.d.ts
@@ -3528,7 +3528,8 @@
             defaultMaskStack: Array<Graphics>;
             defaultFilterStack: Array<filters.IFilterState>;
             renderTexture: RenderTexture | null;
-            destinationFrame: Rectangle;
+            readonly sourceFrame: Rectangle;
+            readonly destinationFrame: Rectangle;
 
             bind(renderTexture: RenderTexture, sourceFrame: Rectangle, destinationFrame: Rectangle): void;
 
diff --git a/packages/core/src/filters/FilterSystem.js b/packages/core/src/filters/FilterSystem.js
index 788efd1..81dc329 100644
--- a/packages/core/src/filters/FilterSystem.js
+++ b/packages/core/src/filters/FilterSystem.js
@@ -199,12 +199,12 @@
 
         state.target = target;
 
-        state.sourceFrame = target.filterArea || target.getBounds(true);
+        state.sourceFrame.copyFrom(target.filterArea || target.getBounds(true));
 
         state.sourceFrame.pad(padding);
         if (autoFit)
         {
-            state.sourceFrame.fit(this.renderer.renderTexture.destinationFrame);
+            state.sourceFrame.fit(this.renderer.renderTexture.sourceFrame);
         }
 
         // round to whole number based on resolution
diff --git a/packages/core/src/renderTexture/RenderTextureSystem.js b/packages/core/src/renderTexture/RenderTextureSystem.js
index 46349b5..e3db1a6 100644
--- a/packages/core/src/renderTexture/RenderTextureSystem.js
+++ b/packages/core/src/renderTexture/RenderTextureSystem.js
@@ -48,6 +48,13 @@
         this.renderTexture = null;
 
         /**
+         * Source frame
+         * @member {PIXI.Rectangle}
+         * @readonly
+         */
+        this.sourceFrame = new Rectangle();
+
+        /**
          * Destination frame
          * @member {PIXI.Rectangle}
          * @readonly
@@ -122,6 +129,8 @@
             this.renderer.stencil.setMaskStack(this.defaultMaskStack);
         }
 
+        this.sourceFrame.copyFrom(sourceFrame);
+
         this.destinationFrame.x = destinationFrame.x / resolution;
         this.destinationFrame.y = destinationFrame.y / resolution;