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There are also very high settings which don't work on many cards, and really don't add as much as the step up from native resolutions to high resolutions. Native PlayStation resolution is very low and unless this setting is on high, images will be very pixilated and not very detailed. Internal X/Y resolution - This setting has the single largest impact on standard image quality that we saw. Here's a brief rundown of what some of the settings in Pete's OpenGL2 plugin do: In order to limit the number of variables we were testing, we decided to stick with one list of settings that worked for both games (as shown above). Happily enough, we discovered that not everything needs to be turned on in order to end up with an indistinguishable rendering of either Final Fantasy IX or Gran Turismo 2. In our quest for perfection, we humbly turned everything off and went through all the options one by one, slowly cranking up the settings and checking what effect they had on the two games that we would eventually end up testing with. In fact, if all the different filtering options are enabled at the same time, what comes out is a blurry, fuzzy, nasty mess. Honestly, this isn't a good way to get anything useful done when working with an emulator. When we first took a look at Pete's OpenGL2 graphics plugin, we wanted to turn everything on, set to maximum and see what happened. These are the settings that we specified in testing using Pete's OpenGL2 Plugin. Aside from writing high quality plugins, Pete is also a very cool guy and he had a lot of useful advice for us when we let him know that we would be tackling the issue of emulator benchmarking. After taking a look at Pete's Homepage and playing around with some of the plugins he had created, we were convinced. Everywhere we looked, we saw references to Pete Bernert and his PSX plugins. In choosing the plugins for our system, we wanted only the best. In the end, though, optimum image quality and performance only come from experimentation.
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Fortunately, there is a section of the ePSXe help file that has suggestions on where to start with settings for certain games. Configuring ePSXe and all the plugins that go along with it is more of an art than a science in some regards.