What Anti-Aliasing Actually Does What do Anti-Aliasing settings in games actually do? MSAA, TAA, DLSS and FSR all try to solve the same graphics problem: how the GPU rasterizes triangles onto a fixed grid of pixels without creating jagged edges. If the GPU checks only the pixel center, you get stair-step edges (aliasing). If it estimates how much of the pixel is covered, the image looks smooth. This is the core idea behind modern real-time rendering and why old MSAA was replaced by TAA and AI up