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Lab02: Yichen Huang #15

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Lab02: Yichen Huang #15

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As7tesia Sep 17, 2025
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# lab02-debugging

# Shader Link
https://www.shadertoy.com/view/WcXfWl
Help received from: Aidan G and Kevin D

# Identified Bugs:

## in main
vec uv2 = 2.0 * uv - vec2(1.0); this line has vec instead of vec2 <br/>
raycast(uv, dir, eye, ref); uv here should be uv2

## in raycast()
H *= len * iResolution.x / iResolution.x; should be dividing by iResolution.y

## in Intersection sdf3D()
dir = reflect(eye, nor); should be dir = reflect(dir, nor)

## in march()
for(int i = 0; i < 64; ++i) ; this 64 limit should be larger, so that it has more samples to reach the further floor, something like 256;

# Setup

Create a [Shadertoy account](https://www.shadertoy.com/). Either fork this shadertoy, or create a new shadertoy and copy the code from the [Debugging Puzzle](https://www.shadertoy.com/view/flGfRc).
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