ATI Radeon HD 2900 XT - R600 Has Arrived

Name: ATI Radeon HD 2900 XT - R600 Has Arrived - Page 10
Brand: ATI

by Marco Chiappetta — Monday, May 14, 2007, 12:01 AM EDT

As we mentioned earlier, new multi-sample anti-aliasing resolve functionality in the Radeon HD 2000 series GPUs makes another new feature, Custom Filter AA, or CFAA, possible.

In addition to all of the AA features in the Radeon X1000 series GPUs (multisampling, programmable sample patterns, gamma correct resolve, temporal AA, adaptive supersampling / multisampling, and super AA), Radeon HD 2000 series GPUs support up to 8x multisampling and can now take samples from outside pixel boundaries, apply non-uniform sample weights, and filter kernels that adapt to the characteristics of each pixel. An adaptive edge detect filter is also available that performs an edge detection pass on a rendered image. Edge pixels are resolved using more samples along the direction of the edge.

Using the various custom filters results in an increase in the effective number of samples per pixel without increasing the memory footprint. CFAA filters are also software upgradeable and can be used to enhance in-game AA settings for most DirectX 9 titles. CFAA works in conjunction with all other AA features and is compatible with HDR and stencil shadows as well.

Tags: ATI, Radeon, HD, Radeon HD, ATI Radeon, R600, arrive, XT, Ive, 290, AR

Marco Chiappetta

Marco's interest in computing and technology dates all the way back to his early childhood. Even before being exposed to the Commodore P.E.T. and later the Commodore 64 in the early ‘80s, he was interested in electricity and electronics, and he still has the modded AFX cars and shop-worn soldering irons to prove it. Once he got his hands on his own Commodore 64, however, computing became Marco's passion. Throughout his academic and professional lives, Marco has worked with virtually every major platform from the TRS-80 and Amiga, to today's high end, multi-core servers. Over the years, he has worked in many fields related to technology and computing, including system design, assembly and sales, professional quality assurance testing, and technical writing. In addition to being the Managing Editor here at HotHardware for close to 15 years, Marco is also a freelance writer whose work has been published in a number of PC and technology related print publications and he is a regular fixture on HotHardware’s own Two and a Half Geeks webcast. - Contact: marco(at)hothardware(dot)com