how different would the results be if we used a more complex shape than a triangle? Do irregular shapes with curves and non-linear edges complicate the antialiasing process a lot, or is the effect pretty much the same?
keeratsingh2002
Furthermore, how does the antialiasing process adapt to objects in motion? In a scenario where we have fast-moving graphics, does the average pixel value method still effectively minimize the aliasing artifacts, or do we use different techniques to maintain the same quality of antialiasing?
Staffi-geng
Great questions!
For more complex/irregular shapes, it would be more difficult to calculate the exact area of a pixel that is covered by that shape, since we’d likely need to know some sort of exact geometric representation of the complex shape. (I believe lecture mentions that these analytic methods don’t generalize very well).
We don’t cover too much on anti-aliasing in the time domain, but temporal anti-aliasing (TAA) is a kind of anti-aliasing technique that averages samples from past frames with the current frame to get an “average” value for each pixel. For fast-moving graphics, this might lead to some ghosting/blurry effects.
how different would the results be if we used a more complex shape than a triangle? Do irregular shapes with curves and non-linear edges complicate the antialiasing process a lot, or is the effect pretty much the same?
Furthermore, how does the antialiasing process adapt to objects in motion? In a scenario where we have fast-moving graphics, does the average pixel value method still effectively minimize the aliasing artifacts, or do we use different techniques to maintain the same quality of antialiasing?
Great questions!
For more complex/irregular shapes, it would be more difficult to calculate the exact area of a pixel that is covered by that shape, since we’d likely need to know some sort of exact geometric representation of the complex shape. (I believe lecture mentions that these analytic methods don’t generalize very well).
We don’t cover too much on anti-aliasing in the time domain, but temporal anti-aliasing (TAA) is a kind of anti-aliasing technique that averages samples from past frames with the current frame to get an “average” value for each pixel. For fast-moving graphics, this might lead to some ghosting/blurry effects.