yes, and the PS1 had a vector unit built in to the CPU that was used for world transform and it was only 24 bits.
Early PS1 games fit the entire world in to a 24 bit space, and you can tell that there is steping if you drive very slow in a game like Ridge Racer. Later games moved the world around in the coordinate system to manage precision.
Another reason why the graphics looks extra "popy" on PS1 (And early DirectX games) is that vertices where computed at a pixel accuracy. OpenGL, Doom, Quake and more modern hardware have sub pixel accuracy.
Early PS1 games fit the entire world in to a 24 bit space, and you can tell that there is steping if you drive very slow in a game like Ridge Racer. Later games moved the world around in the coordinate system to manage precision.
Another reason why the graphics looks extra "popy" on PS1 (And early DirectX games) is that vertices where computed at a pixel accuracy. OpenGL, Doom, Quake and more modern hardware have sub pixel accuracy.