Emulating this required translating PS2-specific drawing commands into DirectX or OpenGL calls. GSdx, originally written by , was the first plugin to do this efficiently.
If 2D backgrounds look blocky or pixelated while 3D models look smooth:
Need help configuring GSdx 11 for a specific game? Check the PCSX2 Wiki for game-specific plugin fixes.
In PCSX2’s main Emulation Settings, ensure (Micro VU1) is enabled. This offloads co-processor work to a third CPU core. The GSdx 11 plugin benefits massively from this, as the renderer thread is kept free.