![]() ![]() As it’s a post-processing filter the results can vary – the filter has no knowledge of depth, polygons, or other attributes of the rendered world beyond the final image – so it’s prone to blending everything that looks like aliasing. Implemented as a compute shader, it works with all games. Morphological Anti-Aliasing (MLAA) is a post-processing filter that works on any (and all) images, looking for high contrast edges (jaggies) and blending them to reduce the contrast. The third change we saw was the introduction of a new anti-aliasing mode, initially launched on the 6800 series and backported to the 5800 series shortly thereafter. At the same time in a controversial move AMD tweaked its default filtering optimizations for the 5800 series and entire 6000 series, leading to these cards producing imagines subtly different (and depending on who you ask, subtly worse) than they were on the 5800 series prior to the Catalyst 10.10 drivers. ![]() For the 6800 series AMD fixed this, and it can now properly blend together noisy textures. AMD’s texture filtering engine from the 5800 set new standards by offering angle independent filtering, but it had an annoying quirk with highly regular/noisy textures where it didn’t do a good enough job blending together various mipmaps, resulting in visible transitions between them. The second change we saw with Barts and the 6800 series was AMD’s refined texture filtering engine. Cayman takes this one step further and implements AMD’s 8 th generation tessellator, which as the naming conventions implies is the 7 th generation tessellator with even further enhancements (particularly those necessary for load balancing). For Barts AMD implemented what they call their 7 th generation tessellator, which focused on delivering improved tessellation performance at lower tessellation factors that AMD felt were more important. Compared to Cypress, Barts is nearly identical save 1 difference: the tessellator. As such for those of you who didn’t pay much attention to the 6800 series, we’re going to quickly recap what’s new in order to lay the groundwork for further comparisons of the 6900 series to the 5800 series. All of these enhancements apply throughout the 6000 series, so this includes the 6900 series. At their core they are a refreshed version of the Cypress GPU that we saw on the 5800 series, but AMD used the opportunity to make some enhancements over the standard Cypress. Back in October AMD launched the first 6000 series cards, the Barts-based Radeon HD 6800 series. ![]()
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