Folks at TomsHardware have kindly uploaded an onscreen recording of the “Post Mortem: GPU Accelerated Effects in Borderlands 2” talk, which was presented at GPU Technology Conference (GTC 2013) and, later on, at Game Developer Conference (GDC 2013) in March, and is not yet available through official channels.
The presentation covers the implementation details and the authoring process of the extra physics effects (impact debris particles, simulated cloth and SPH fluids) for one of the best game with GPU PhysX support – Borderlands 2.