What is path rendering?
What is path rendering?
What is path rendering?
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Anti-aliasing D<strong>is</strong>cussionGood anti-aliasing <strong>is</strong> a big deal for <strong>path</strong> <strong>rendering</strong>Particularly true for font <strong>rendering</strong> of small point sizesFeatures of glyphs are often on the scale of a pixel or lessNV_<strong>path</strong>_<strong>rendering</strong> uses multiple stencil samples per pixel for reasonableantialiasingOtherw<strong>is</strong>e, image quality <strong>is</strong> poor4 samples/pixel bare minimum8 or 16 samples/pixel <strong>is</strong> pretty sufficientBut 16 requires expensive 2x2 supersampling of 4x mult<strong>is</strong>ampling16x <strong>is</strong> extremely memory intensiveAlternative: quality vs. performance tradeoffFast enough to render multiple passes to improve qualityApproachesAccumulation bufferAlpha accumulation
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