Visibility and Hidden Surface Removal
Visibility and Hidden Surface Removal
Visibility and Hidden Surface Removal
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Scanline: scan example 1<br />
• At scanline y = a: AET has AB <strong>and</strong> AC<br />
– Render background color<br />
– At AB: invert in-out flag of ABC<br />
© Machiraju/Zhang/Möller<br />
Scanline coherence –<br />
no depth updates yet<br />
– Render “in” polygon ABC using information<br />
from PT<br />
– At AC: invert in-out<br />
flag of ABC<br />
– Render background<br />
color<br />
– Next scanline<br />
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