Home THE ENGINE GAMES NEWS JOB OPENINGS THE ENGINE GAMES NEWS JOB OPENINGS

Frostbite

Stable SSAO in Battlefield 3 with Selective Temporal Filtering

GDC 2012

With the highest-quality video options, Battlefield 3 renders its Screen-Space Ambient Occlusion SSAO using the Horizon-Based Ambient Occlusion HBAO algorithm. For performance reasons, the HBAO is rendered in half resolution using half-resolution input depths. The HBAO is then blurred in full resolution using a depth-aware blur. The main issue with such low-resolution SSAO rendering is that it produces objectionable flickering for thin objects such as alpha-tested foliage when the camera and/or the geometry are moving. After a brief recap of the original HBAO pipeline, this talk describes a novel temporal filtering algorithm that fixed the HBAO flickering problem in Battlefield 3 with a 1-2 performance hit in 1920×1200 on PC DX10 or DX11. The talk includes algorithm and implementation details on the temporal filtering part, as well as generic optimizations for SSAO blur pixel shaders. This is a joint work between Louis Bavoil NVIDIA and Johan Andersson DICE.

Related News

Dragon Age: The Veilguard’s accessibility opens the game for everyone

Electronic Arts Inc.
Nov 14, 2024
Dragon Age: The Veilguard accessibility features allow players with different disabilities from around the world to enjoy the game.

Bringing Locks to Life With Strand Hair Technology in Dragon Age: The Veilg…

Electronic Arts Inc.
Nov 12, 2024
See how Frostbite and BioWare took Strand Hair tech to the next level, simulating up to 50,000 individual strands for over 100 hairstyles in Dragon Age: The Veilguard.

EA Security - Keeping Your EA Account Safe

Electronic Arts Inc.
Nov 6, 2024
An update on EA Account safety measures, in partnership with Google.