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Lab2: Tianhong Zhou #25

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30 changes: 30 additions & 0 deletions README.md
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# lab02-debugging

Name:

Tianhong Zhou

Link:

[ShaderToy](https://www.shadertoy.com/view/wcfBWl)

Bug:

1. vec uv2 = 2.0 * uv - vec2(1.0); -> vec2 uv2 = 2.0 * uv - vec2(1.0);

There is a warning.

2. raycast(uv, dir, eye, ref); -> raycast(uv2, dir, eye, ref);

Before change this bug, it only shows 1/4 of the full scene, so it must be related to uv.

3. H *= len * iResolution.x / iResolution.y; -> H *= len * iResolution.x / iResolution.x;

Spheres become ellipsoids, must be some ratio error.

4. dir = reflect(eye, nor); -> dir = reflect(dir, nor);

Unable to see reflection, must be related to reflection part.

5. for(int i = 0; i < 64; ++i) -> for(int i = 0; i < 256; ++i)

Unable to see the full floor, must be realted to raymarching distance.

# 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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