Quality preset for SMAA. Higher presets lower the edge-detection threshold (so
fainter edges are anti-aliased) and increase the orthogonal search distance (so
longer near-horizontal/vertical edges are reconstructed). The underlying
three-stdlib SMAA shaders do not implement the reference SMAA's diagonal search
and corner rounding, so those are unaffected by the preset.
Quality preset for SMAA. Higher presets lower the edge-detection threshold (so fainter edges are anti-aliased) and increase the orthogonal search distance (so longer near-horizontal/vertical edges are reconstructed). The underlying three-stdlib SMAA shaders do not implement the reference SMAA's diagonal search and corner rounding, so those are unaffected by the preset.