Added some documentation, cleaned up some code, fleshed out the remaining work to make the project a little easier for newcomers to approach

shaders/imagePass.frag

@@ -6,6 +6,9 @@ varying vec2 vUV;
 
 void main() {
 	vec3 bgColor = texture2D(backgroundTex, vUV).rgb;
+
+	// Combine the texture and bloom, then blow it out to reveal more of the image
 	float brightness = pow(min(1., texture2D(tex, vUV).r * 2.) + texture2D(bloomTex, vUV).r, 1.5);
+	
 	gl_FragColor = vec4(bgColor * brightness, 1.0);
 }