1. [Publications](/publications) 2. Aggregate G-Buffer Anti-Aliasing # Aggregate G-Buffer Anti-Aliasing ![](/sites/default/files/styles/wide/public/pubs/2015-02_Aggregate-G-Buffer-Anti-Aliasing/AGAA_Teaser.png?itok=XaWaNq7y) We present Aggregate G-Buffer Anti-Aliasing (AGAA), a new technique for efficient anti-aliased deferred rendering of complex geometry using modern graphics hardware. In geometrically complex situations, where many surfaces intersect a pixel, current rendering systems shade each contributing surface at least once per pixel. As the sample density and geometric complexity increase, the shading cost becomes prohibitive for real-time rendering. Under deferred shading, so does the required framebuffer memory. AGAA uses the rasterization pipeline to generate a compact, pre-filtered geometric representation inside each pixel. We then shade this at a fixed rate, independent of geometric complexity. By decoupling shading rate from geometric sampling rate, the algorithm reduces the storage and bandwidth costs of a geometry buffer, and allows scaling to high visibility sampling rates for anti-aliasing. ## Authors [Cyril Crassin](/person/cyril-crassin) Morgan McGuire (NVIDIA) Kayvon Fatahalian (Carnegie Mellon University) [Aaron Lefohn](/person/aaron-lefohn) ## Publication Date Sunday, February 1, 2015 ## Published in [Proceedings of the ACM Symposium on Interactive 3D Graphics and Games 2015 (I3D…](http://www.csee.umbc.edu/csee/research/vangogh/I3D2015/) ## Research Area [Computer Graphics](/research-area/computer-graphics) ## External Links [Video (High Quality)](http://files.icare3d.org/AGAA/AGAA_I3D15_HighQ.mkv) ## Uploaded Files [I3D 2015 Authors Version](https://research.nvidia.com/sites/default/files/pubs/2015-02_Aggregate-G-Buffer-Anti-Aliasing/AGAA_I3D2015_authors.pdf "Open file in new window")23.7 MB [I3D 2015 Slides](https://research.nvidia.com/sites/default/files/pubs/2015-02_Aggregate-G-Buffer-Anti-Aliasing/AGAA_I3D2015_Final_Web.pdf "Open file in new window")7.41 MB [TVCG 2016 Extented Version](https://research.nvidia.com/sites/default/files/pubs/2015-02_Aggregate-G-Buffer-Anti-Aliasing/AGAA_Extended_TVCG2016_AuthorsVersion.pdf "Open file in new window")37.85 MB ## Copyright This material is posted here with permission of the IEEE. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to .