Not necessarily - rasterisation can suffer from "overdraw", which raytracing doesn't (although it has its own issues with acceleration structure requirements, e

Not necessarily - rasterisation can suffer from "overdraw", which raytracing doesn't (although it has its own issues with acceleration structure requirements, especially where moving objects in the scene is concerned, so it's not a complete win). One of the reasons VFX has moved to raytracing/pathtracing is that it copes with complexity a lot better in general (we're talking scenes with 500 million uninstanced triangles). It also allows you to do much more accurate camera projections like spherical / fisheye (which could be useful for VR). Doing things like omni-directional spherical 3D projection in rasterisation requires tricks or warping in 2D, whereas it's pretty trivial to trace rays from the camera and do it completely accurately with raytracing.