> For the complete documentation index, see [llms.txt](https://www.xrdev.app/mixed-reality-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts.md).

# Concepts

- [What is WebGL?](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/what-is-webgl.md)
- [What is Field of View?](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/what-is-field-of-view.md)
- [What is Aspect Ratio of a Camera?](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/what-is-aspect-ratio-of-a-camera.md)
- [What is near and far clipping planes of a camera?](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/what-is-near-and-far-clipping-planes-of-a-camera.md)
- [What does updating projection matrix do?](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/what-does-updating-projection-matrix-do.md)
- [What are 3D primitive objects?](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/what-are-3d-primitive-objects.md)
- [What is a Vertex?](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/what-is-a-vertex.md)
- [What are 3D model loaders?](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/what-are-3d-model-loaders.md)
- [Materials](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/materials.md)
- [What is a Normal in 3D?](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/what-is-a-normal-in-3d.md)
- [Environment Maps](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/environment-maps.md)
- [Normal Maps](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/normal-maps.md)
- [Subsurface Scattering](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/subsurface-scattering.md)
- [UV Mapping](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/uv-mapping.md)
- [Baking](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/baking.md)
- [Texturing](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/texturing.md)
- [Animations and Rigging](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/animations-and-rigging.md)
- [3D scene interactions](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/3d-scene-interactions.md)
- [What is a Transformation Matrix](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/what-is-a-transformation-matrix.md)
- [What are 3DOF or 6DOF?](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts/what-are-3dof-or-6dof.md)


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