Morphological Anti-Aliasing (MLAA) is a post-processing technique used to reduce jagged edges ("jaggies") in images. Unlike traditional MSAA, which requires significant GPU power, MLAA was designed to run on the (Synergistic Processing Units).

Compared to RPCS3’s other anti-aliasing options—such as forcing MSAA (2x, 4x, 8x) or relying on native resolution scaling—MLAA is computationally inexpensive. It runs as a full-screen shader pass, consuming minimal GPU compute time (often less than 1–2 ms per frame on a modern mid-range GPU). By contrast, 4x MSAA can increase render target memory usage by a factor of 4, potentially causing VRAM bottlenecks and performance drops in demanding games.