A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
For questions related to the usage of graphics processing units for computation outside of the traditional graphics pipeline but still somewhat related to computer graphics.
For questions about the Metal graphics/compute API.
An SDF is a function which takes a position as an input, and outputs the distance from that position to the nearest part of a shape.
NonUniform B-Spline (NURBS) is a method to describe parametric curves/surfece. TYpically used as base poriniteves in CAD modelling.