# 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) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://www.xrdev.app/mixed-reality-docs/webxr-lessons/3d-on-the-web/concepts.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.