diff --git a/www/js/webgl-demo.js b/www/js/webgl-demo.js
index 8b376b2..10deb74 100644
--- a/www/js/webgl-demo.js
+++ b/www/js/webgl-demo.js
@@ -3,10 +3,6 @@ import { drawScene } from "./draw-scene.js";
 
 main();
 
-/* XXX: TODO: Avoid using alerts! Check return values instead,
- * XXX: TODO: or create/use a Result like object.
- */
-
 // Initialize a shader program, so WebGL knows how to draw our data
 function initShaderProgram(gl, vsSource, fsSource) {
   const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
@@ -86,6 +82,9 @@ function renderShader(gl, vsSource, fsSource) {
     requestAnimationFrame(render);
   }
   requestAnimationFrame(render);
+
+  // XXX: TODO: read this guide it's great! https://stackoverflow.com/questions/56998225/why-is-rendering-blurred-in-webgl
+  // window.addEventListener('resize', render);
 }
 
 function fetchShader(name) {
@@ -102,6 +101,10 @@ function main() {
   // Initialize the GL context
   const gl = canvas.getContext("webgl");
 
+  // XXX: TODO: use `window.addEventListener('resize', ...);`
+  canvas.setAttribute('width', window.innerWidth);
+  canvas.setAttribute('height', window.innerHeight);
+
   // Only continue if WebGL is available and working
   if (gl === null) {
     throw new Error("Unable to initialize WebGL. Your browser or machine may not support it.");