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→Emulation issues
Jittering polygons are caused by low-precision fixed-point (to the native res, essentially) math. And more accurate math where relevant helps, i.e. [[Recommended_PSX_Plugins#Video|GTE Accuracy]]. Though it can often create holes in the seams.
The PS1 hardware didn't have a [https://en.wikipedia.org/wiki/Z-buffering z-buffer]. The lack of a z-buffer causes things like polygons popping over others. Tekken character limbs are a good example to see that.Its theoretically possible to implement Z-Buffer in PSX emulators[http://translate.google.com/translate?depth=1&hl=en&ie=UTF8&prev=_t&rurl=translate.google.pl&sl=ru&tl=en&u=http://forum.emu-russia.net/viewtopic.php%3Fp%3D17237]
No texture perspective correction causes distortion to texture angles at certain viewing angles. Notably at the bottom near the camera.
