lab06-debugging

Name & Link

Janet Wang

https://www.shadertoy.com/view/DdccR2

Bugs

1. Line 97: should write vec2

It's reminded by the compiler.

2. Line 100: Should use uv2 in raycast.

It's quite obvious when I read the mainImage() function line by line.

3. Line 11: Should be H *= len * iResolution.x / iResolution.y;

The geometry of the balls are weird, and the problem should be in raycast or sdf. And when looking at the raycast function, it's clear that H should be multiplied by Aspect ratio, which is iResolution.x / iResolution.y.

4. Line 75: Should be dir = reflect(dir, nor);

The balls are missing their reflections, so I read the code about relection in sdf. Somehow the input of reflect() was eye, it's meaningless and should be dir.