Which calls the PS2 platform port 'Sky' (named after Sony's SKY PS2 simulator), hence SkyGFX.Įven though SA differs more drastically between platforms, GTA III and Vice City GTA III-SA are built upon the RenderWare graphics engine The original mission was to port the PS2 graphics of GTA San Andreas Since its inception SkyGFX has evolved quite a bit. I try to keep the more technical stuff out of the way as not to confuse people, The aim of this document is to document what SkyGFX does in detail.