Subpixel Morphological Anti-Aliasing (SMAA)

Subpixel Morphological Anti-Aliasing (SMAA / Subpixel Morphological Anti-Aliasing) is a technical term that is extremely important in the rendering and optimization of game graphics (technical art). An evolution of FXAA, this is a post-processing anti-aliasing technology that uses image analysis to highly classify edge patterns (boundary shapes such as L- and U-shapes) within the screen, and minimizes edge blur while expressing crisp, smooth edges comparable to MSAA.

Real-world analogy: Instead of simply rubbing the jagged edges of a signboard with your finger to blur it (FXAA), a professional restorer measures the inclination (angle) of the border line with a ruler and ``slides the brush neatly only along the diagonal angle'' to neaten the edges.

SMAA is an ``evolutionary algorithm that maintains the overwhelming lightness of image processing anti-aliasing (FXAA) while sharpening the image quality to SLR level.'' The GPU instantly analyzes the pattern of the ``in which direction and at what angle'' the jagged edges on the screen are tilted (Is it an L-shape or a gentle slope?) and performs pinpoint blending ``only along'' the direction of the inclination, so the sharp details of wrinkles in clothing and straight lines of buildings are completely preserved, while only the jagged edges of the edges are rendered very beautifully, clearly and smoothly.

Detailed mechanism and operating principle

Change the camera's "Anti-aliasing" mode to "Subpixel Morphological Anti-Aliasing (SMAA)," perform advanced morphological analysis of the edge shape pattern from the image, and sharply blend and interpolate only appropriate directions.