diff --git a/src/entities/Bloom.ts b/src/entities/Bloom.ts
index 4fbde30..2266b8e 100644
--- a/src/entities/Bloom.ts
+++ b/src/entities/Bloom.ts
@@ -1,6 +1,5 @@
 import { BufferRenderTarget } from '../heck/BufferRenderTarget';
 import { Entity } from '../heck/Entity';
-import { GLCatTexture } from '@fms-cat/glcat-ts';
 import { Material } from '../heck/Material';
 import { Quad } from '../heck/components/Quad';
 import { RenderTarget } from '../heck/RenderTarget';
@@ -12,7 +11,7 @@ import bloomBlurFrag from '../shaders/bloom-blur.frag';
 import bloomPostFrag from '../shaders/bloom-post.frag';
 
 export interface BloomOptions {
-  input: GLCatTexture<WebGL2RenderingContext>;
+  input: BufferRenderTarget;
   target: RenderTarget;
 }
 
@@ -40,7 +39,7 @@ export class Bloom {
       quadVert,
       bloomPreFrag
     );
-    materialBloomPre.addUniformTexture( 'sampler0', options.input );
+    materialBloomPre.addUniformTexture( 'sampler0', options.input.texture );
 
     this.entity.components.push( new Quad( {
       target: swap.o,
@@ -92,7 +91,7 @@ export class Bloom {
       quadVert,
       bloomPostFrag
     );
-    materialBloomPost.addUniformTexture( 'samplerDry', options.input );
+    materialBloomPost.addUniformTexture( 'samplerDry', options.input.texture );
     materialBloomPost.addUniformTexture( 'samplerWet', swap.i.texture );
 
     this.entity.components.push( new Quad( {
diff --git a/src/entities/Glitch.ts b/src/entities/Glitch.ts
index e11721b..9b378c2 100644
--- a/src/entities/Glitch.ts
+++ b/src/entities/Glitch.ts
@@ -1,14 +1,16 @@
 import { Entity } from '../heck/Entity';
-import { GLCatTexture } from '@fms-cat/glcat-ts';
 import { Material } from '../heck/Material';
 import { Quad } from '../heck/components/Quad';
 import { RenderTarget } from '../heck/RenderTarget';
 import quadVert from '../shaders/quad.vert';
 import glitchFrag from '../shaders/glitch.frag';
 import { Automaton } from '@fms-cat/automaton';
+import returnFrag from '../shaders/return.frag';
+import { BufferRenderTarget } from '../heck/BufferRenderTarget';
+import { Blit } from '../heck/components/Blit';
 
 export interface GlitchOptions {
-  input: GLCatTexture<WebGL2RenderingContext>;
+  input: BufferRenderTarget;
   target: RenderTarget;
   automaton: Automaton;
 }
@@ -22,9 +24,34 @@ export class Glitch {
   public constructor( options: GlitchOptions ) {
     this.entity = new Entity();
 
+    const entityBypass = new Entity();
+    entityBypass.visible = false;
+    this.entity.children.push( entityBypass );
+
+    const entityMain = new Entity();
+    entityMain.active = false;
+    entityMain.visible = false;
+    this.entity.children.push( entityMain );
+
+    // -- bypass -----------------------------------------------------------------------------------
+    const materialReturn = new Material(
+      quadVert,
+      returnFrag,
+    );
+    materialReturn.addUniformTexture(
+      'sampler0',
+      options.input.texture,
+    );
+
+    entityBypass.components.push( new Blit( {
+      src: options.input,
+      dst: options.target,
+      name: 'Glitch/blitBypass',
+    } ) );
+
     // -- quad -------------------------------------------------------------------------------------
     this.material = new Material( quadVert, glitchFrag );
-    this.material.addUniformTexture( 'sampler0', options.input );
+    this.material.addUniformTexture( 'sampler0', options.input.texture );
 
     if ( module.hot ) {
       module.hot.accept( '../shaders/glitch.frag', () => {
@@ -37,11 +64,14 @@ export class Glitch {
       material: this.material,
       name: process.env.DEV && 'Glitch/quad',
     } );
-    this.entity.components.push( quad );
+    entityMain.components.push( quad );
 
     // -- update uniform ---------------------------------------------------------------------------
     options.automaton.auto( 'Glitch/amp', ( { value } ) => {
       this.material.addUniform( 'amp', '1f', value );
+
+      entityMain.active = 0.0 < value;
+      entityBypass.active = !entityMain.active;
     } );
   }
 }
diff --git a/src/entities/PixelSorter.ts b/src/entities/PixelSorter.ts
index 07233d1..87b542f 100644
--- a/src/entities/PixelSorter.ts
+++ b/src/entities/PixelSorter.ts
@@ -1,5 +1,4 @@
 import { Entity } from '../heck/Entity';
-import { GLCatTexture } from '@fms-cat/glcat-ts';
 import { Material } from '../heck/Material';
 import { Quad } from '../heck/components/Quad';
 import { RenderTarget } from '../heck/RenderTarget';
@@ -10,10 +9,10 @@ import quadVert from '../shaders/quad.vert';
 import { BufferRenderTarget } from '../heck/BufferRenderTarget';
 import { Swap } from '@fms-cat/experimental';
 import { Automaton } from '@fms-cat/automaton';
-import { gl } from '../heck/canvas';
+import { Blit } from '../heck/components/Blit';
 
 export interface PixelSorterOptions {
-  input: GLCatTexture<WebGL2RenderingContext>;
+  input: BufferRenderTarget;
   target: RenderTarget;
   automaton: Automaton;
 }
@@ -61,12 +60,13 @@ export class PixelSorter {
     );
     materialReturn.addUniformTexture(
       'sampler0',
-      options.input,
+      options.input.texture,
     );
 
-    entityBypass.components.push( new Quad( {
-      target: options.target,
-      material: materialReturn,
+    entityBypass.components.push( new Blit( {
+      src: options.input,
+      dst: options.target,
+      name: 'PixelSorter/blitBypass',
     } ) );
 
     // -- calc index -------------------------------------------------------------------------------
@@ -83,7 +83,7 @@ export class PixelSorter {
       material.addUniform( 'mul', '1f', mul );
       material.addUniformTexture(
         'sampler0',
-        options.input,
+        options.input.texture,
       );
       material.addUniformTexture(
         'sampler1',
@@ -118,7 +118,7 @@ export class PixelSorter {
       material.addUniform( 'comp', '1f', comp );
       material.addUniformTexture(
         'sampler0',
-        isFirst ? options.input : this.swapBuffer.o.texture,
+        ( isFirst ? options.input : this.swapBuffer.o ).texture,
       );
       material.addUniformTexture(
         'sampler1',
diff --git a/src/entities/Post.ts b/src/entities/Post.ts
index e3c8708..810829d 100644
--- a/src/entities/Post.ts
+++ b/src/entities/Post.ts
@@ -1,13 +1,13 @@
 import { Entity } from '../heck/Entity';
-import { GLCatTexture } from '@fms-cat/glcat-ts';
 import { Material } from '../heck/Material';
 import { Quad } from '../heck/components/Quad';
 import { RenderTarget } from '../heck/RenderTarget';
 import postFrag from '../shaders/post.frag';
 import quadVert from '../shaders/quad.vert';
+import { BufferRenderTarget } from '../heck/BufferRenderTarget';
 
 export interface PostOptions {
-  input: GLCatTexture<WebGL2RenderingContext>;
+  input: BufferRenderTarget;
   target: RenderTarget;
 }
 
@@ -23,7 +23,7 @@ export class Post {
       quadVert,
       postFrag,
     );
-    material.addUniformTexture( 'sampler0', options.input );
+    material.addUniformTexture( 'sampler0', options.input.texture );
 
     if ( process.env.DEV ) {
       if ( module.hot ) {
diff --git a/src/entities/Return.ts b/src/entities/Return.ts
index 1ca480a..72ccf59 100644
--- a/src/entities/Return.ts
+++ b/src/entities/Return.ts
@@ -1,13 +1,13 @@
 import { Entity } from '../heck/Entity';
-import { GLCatTexture } from '@fms-cat/glcat-ts';
 import { Material } from '../heck/Material';
 import { Quad } from '../heck/components/Quad';
 import { RenderTarget } from '../heck/RenderTarget';
 import returnFrag from '../shaders/return.frag';
 import quadVert from '../shaders/quad.vert';
+import { BufferRenderTarget } from '../heck/BufferRenderTarget';
 
 export interface PostOptions {
-  input: GLCatTexture<WebGL2RenderingContext>;
+  input: BufferRenderTarget;
   target: RenderTarget;
 }
 
@@ -22,7 +22,7 @@ export class Return {
       quadVert,
       returnFrag,
     );
-    material.addUniformTexture( 'sampler0', options.input );
+    material.addUniformTexture( 'sampler0', options.input.texture );
 
     this.entity.components.push( new Quad( {
       target: options.target,
diff --git a/src/heck/components/Blit.ts b/src/heck/components/Blit.ts
new file mode 100644
index 0000000..bb6e944
--- /dev/null
+++ b/src/heck/components/Blit.ts
@@ -0,0 +1,54 @@
+import { Component, ComponentOptions, ComponentUpdateEvent } from './Component';
+import { RenderTarget } from '../RenderTarget';
+import { gl } from '../canvas';
+import { BufferRenderTarget } from '../BufferRenderTarget';
+
+export interface BlitOptions extends ComponentOptions {
+  src: BufferRenderTarget;
+  dst: RenderTarget;
+  srcRect?: [ number, number, number, number ];
+  dstRect?: [ number, number, number, number ];
+  mask?: GLenum;
+  filter?: GLenum;
+}
+
+/**
+ * Blit.
+ */
+export class Blit extends Component {
+  public src: BufferRenderTarget;
+  public dst: RenderTarget;
+  public srcRect: [ number, number, number, number ];
+  public dstRect: [ number, number, number, number ];
+  public mask: GLenum;
+  public filter: GLenum;
+
+  public constructor( options: BlitOptions ) {
+    super( options );
+
+    this.visible = false;
+
+    this.src = options.src;
+    this.dst = options.dst;
+    this.srcRect = options.srcRect ?? [ 0, 0, this.src.width, this.src.height ];
+    this.dstRect = options.dstRect ?? [ 0, 0, this.dst.width, this.dst.height ];
+    this.mask = options.mask ?? gl.COLOR_BUFFER_BIT;
+    this.filter = options.filter ?? gl.NEAREST;
+  }
+
+  protected __updateImpl(): void {
+    gl.bindFramebuffer( gl.READ_FRAMEBUFFER, this.src.framebuffer.raw );
+    if ( this.dst instanceof BufferRenderTarget ) {
+      gl.bindFramebuffer( gl.DRAW_FRAMEBUFFER, this.dst.framebuffer.raw );
+    } else {
+      gl.bindFramebuffer( gl.DRAW_FRAMEBUFFER, null );
+    }
+
+    gl.blitFramebuffer(
+      ...this.srcRect,
+      ...this.dstRect,
+      this.mask,
+      this.filter,
+    );
+  }
+}
diff --git a/src/main.ts b/src/main.ts
index 4e63bcc..0ee3b52 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -312,14 +312,14 @@ dog.root.children.push( camera.entity );
 
 swap.swap();
 const bloom = new Bloom( {
-  input: swap.i.texture,
+  input: swap.i,
   target: swap.o
 } );
 dog.root.children.push( bloom.entity );
 
 swap.swap();
 const glitch = new Glitch( {
-  input: swap.i.texture,
+  input: swap.i,
   target: swap.o,
   automaton,
 } );
@@ -327,7 +327,7 @@ dog.root.children.push( glitch.entity );
 
 swap.swap();
 const pixelSorter = new PixelSorter( {
-  input: swap.i.texture,
+  input: swap.i,
   target: swap.o,
   automaton,
 } );
@@ -335,7 +335,7 @@ dog.root.children.push( pixelSorter.entity );
 
 swap.swap();
 const post = new Post( {
-  input: swap.i.texture,
+  input: swap.i,
   target: canvasRenderTarget
 } );
 dog.root.children.push( post.entity );