| Inigo Quilez — Distance Functions (3D) | Reference for SDF primitives & combinations. | https://iquilezles.org/articles/distfunctions/ | Core for raymarched SDF scenes. |
| Inigo Quilez — Distance Functions (2D) | Reference for 2D SDF primitives. | https://iquilezles.org/articles/distfunctions2d/ | 2D field helpers. |
| Inigo Quilez — Code / Articles | Broad shader math, SDF, shading articles. | https://iquilezles.org/code/ | Foundational shader theory. |
| ShaderToy — SDF playlist | Curated SDF shader playlist. | https://www.shadertoy.com/playlist/43cXRl | Starting point for SDF study. |
| ShaderToy — dblsphere (4lyfzw) | SDF double-sphere shader. | https://www.shadertoy.com/view/4lyfzw | |
| ShaderToy — sdBox field (Ml3fWj) | SDF box / domain shader. | https://www.shadertoy.com/view/Ml3fWj | |
| ShaderToy — torus (Mt3BDj) | SDF torus shader. | https://www.shadertoy.com/view/Mt3BDj | |
| ShaderToy — (MlcBDj) | SDF scene shader. | https://www.shadertoy.com/view/MlcBDj | |
| ShaderToy — (ltcfDj) | SDF scene shader. | https://www.shadertoy.com/view/ltcfDj | |
| ShaderToy — (lt3BW2) | SDF scene shader. | https://www.shadertoy.com/view/lt3BW2 | |
| ShaderToy — (Xds3zN) | SDF scene shader. | https://www.shadertoy.com/view/Xds3zN | |
