August 26, 200421 yr Remember all our discussions in 2003 about FSAA, Quincunx, aniso settings, etc.?Well, I am fiddling once again and I want to ask: what IS Quincunx and why is it so great? What does it really do? I am not sure I see it does anything much when I raise my FSAA from 2x to 2xQ.Also, not much diff between FSAA 2x and 4x with my Ti4600 card but frames go down another 30% if I raise the setting. what use is that?Appreciate any posts on this, thanks!JS Jonathan Sacks Dell XPS Gen 4, Pentium IV Northwood extreme 3.8Ghz, 3Ghz RAM, eVGA 7900 GTO, 12 GoFlight modules plus MCP-PRO AP and EFIS, GF pedestal, CH rudder pedals, CH throttle quadrant, 42" LG LED, 24" DELL LCD, Windows XP, FS2004, FSUIPC 3.96 FS Autostart 1.1 (Build 11), FS Navigator 4.6, UT, FE, GE, REX, PMDG, Level-D, PSS, etc.
August 26, 200421 yr HiQuincunx is a way of creating an anti-aliased picture of similar quality to 4xSupersampling but only using about the same power as 2xSupersampling.It works, if I recall correctly, by producing only two samples of the image, (just like 2xSupersampling) but then overlaying the two samples by moving one half a pixel in the x and y dimensions. this action produces four pixels to be filterd into one instead of the normal two.The name "quincunx" refers to the way the pixels are aranged in the sampling group, four pixels make a square, with one extra pixel in the middle. quincunxAA should offer a higher quality image that 2xsupersampling, however the image that it produces can be "fuzzy". It is lower quality than 4xSupersampling, but then it uses significantly less power.Anti-aliasing is all about perception, if you don't see any important difference between 2x, quincunx and 4x then you should use the lowest one.Often a poor monitor will hide the diffences between anti-aliasing settings, Jaggies were much more noticable on my high quality monitor than my rather cheap secondary.I hope this helps.Simon.
August 26, 200421 yr Never liked that feature on my Geforce3...and my current Radeon 9700 looks better @ normal 2x than the Geforce3 did at either 2x or Qx anyway (and possibly better than its 4x as well...). -
August 26, 200421 yr One strange thing with 2xAA and 2xQAA is that it messes up FSNav yet 4xAA doesn't.FSNav map view will take 2 or 3 attempts at rendering with a 2xAA setting yet at 4X it renders as quick as with no AA set, at least that's the case with my GF4 Ti4800SE and I suspect other GF4 cards.
August 26, 200421 yr Well quincunx is better than 2x quality aa as it removes more jaggy but it also blurs the image so it
August 26, 200421 yr Author Vulcan:No issues at all with FSNav 4.6 and my Ti4600 with FSAA at ANY setting.JS Jonathan Sacks Dell XPS Gen 4, Pentium IV Northwood extreme 3.8Ghz, 3Ghz RAM, eVGA 7900 GTO, 12 GoFlight modules plus MCP-PRO AP and EFIS, GF pedestal, CH rudder pedals, CH throttle quadrant, 42" LG LED, 24" DELL LCD, Windows XP, FS2004, FSUIPC 3.96 FS Autostart 1.1 (Build 11), FS Navigator 4.6, UT, FE, GE, REX, PMDG, Level-D, PSS, etc.
August 26, 200421 yr Author Simon:Thanks for your post. Much appreciated!JS Jonathan Sacks Dell XPS Gen 4, Pentium IV Northwood extreme 3.8Ghz, 3Ghz RAM, eVGA 7900 GTO, 12 GoFlight modules plus MCP-PRO AP and EFIS, GF pedestal, CH rudder pedals, CH throttle quadrant, 42" LG LED, 24" DELL LCD, Windows XP, FS2004, FSUIPC 3.96 FS Autostart 1.1 (Build 11), FS Navigator 4.6, UT, FE, GE, REX, PMDG, Level-D, PSS, etc.
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