GoKawiilSimple divide-by-depth formula explains 3D-to-2D graphics projection
A blog post highlighted by developer tsoding breaks down 3D perspective projection into one basic operation: dividing a point's x and y coordinates by its z (depth) value. The piece demonstrates this with live shader examples, showing how a ball's position and size shrink toward a vanishing point as it moves farther from the camera along the z-axis.