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by Sharlin
678 days ago
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The problem is determining the coverage, the contribution of the polygon to a pixel's final color, weighted by a filter. This is relevant at polygon edges, where a pixel straddles one or more edges, and some sort of anti-aliasing is required to prevent jaggies[1] and similar aliasing artifacts, such as moiré, which would result from naive discretization (where each pixel is either 100% or 0% covered by a polygon, typically based on whether the polygon covers the pixel center). [1] https://en.wikipedia.org/wiki/Jaggies |
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