diff --git a/src/lib/Renderer.ts b/src/lib/Renderer.ts
index 13d9e58..1182bb9 100644
--- a/src/lib/Renderer.ts
+++ b/src/lib/Renderer.ts
@@ -4,6 +4,7 @@ import {UniformType} from "./Uniform.js";
 import type Program from "./Program.js";
 import type {RendererBuffer} from "./RendererBuffer.js";
 import type {Texture} from "./Texture.js.js";
+import type {RendererInstance} from "./RendererInstance.js";
 
 /**
  * @typedef {Object} ImageOptions
@@ -25,6 +26,7 @@ export class Renderer {
     public width: number = 0;
     public height: number = 0;
     public program!: Program;
+    public main!: RendererInstance;
 
     gl: WebGLInstance;
     protected frame: number = 0;
diff --git a/src/lib/RendererInstance.ts b/src/lib/RendererInstance.ts
index dd722bc..0ed1adb 100644
--- a/src/lib/RendererInstance.ts
+++ b/src/lib/RendererInstance.ts
@@ -32,6 +32,7 @@ export class RendererInstance extends Renderer {
         this.options = {...ImageEffectRenderer.defaultOptions, ...options};
         this.index = RendererInstance.index++;
         this.container = container;
+        this.main = this;
 
         if (this.options.useSharedContext) {
             this.canvas = document.createElement('canvas');
@@ -89,6 +90,7 @@ export class RendererInstance extends Renderer {
         }
         const newBuffer = new RendererBuffer(this.gl, options);
         newBuffer.program = this.gl.compileShader(shader);
+        newBuffer.main = this;
         return this.buffers[i] = newBuffer;
     }