Ray Tracing Bezier Surface - IIIT Hyderabad
Ray Tracing Bezier Surface - IIIT Hyderabad
Ray Tracing Bezier Surface - IIIT Hyderabad
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<strong>IIIT</strong> <strong>Hyderabad</strong>GPU Implementation• Newton Iteration– Each <strong>Ray</strong>-Patch intersection mappedto a thread– Applied till convergence or maxiteration– Output: Hit-point and surface normal– Takes 20-30% of the total time0,1 2,2 4,3 5,7 7,3Potential Intersections14 8 7 34 63Initial valuesH1 H2 NH H3 H4Hit PointsN1 N2 NH N3 N4<strong>Surface</strong> Normals
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