Raytracing

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Recursion issuesDon’t recurse if you don’t need to• What if the specular color is black?Recursion is expensive• Decide how much you want to doCSE 472 Spring 201351What’s different, now?CSE 472 Spring 201352
CSE 472 Spring 201353PenumbraPenumbra is a soft-edged shadow• You get it when the light has area• Often called “soft shadows”CSE 472 Spring 201354
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Page 6 and 7: Problems w/ numerical precisionCSE
Page 8 and 9: Intersect Functionbool Intersect(co
Page 10 and 11: Aliasing, aka “Jaggies”Why does
Page 12 and 13: Characteristics of the Human EyeRec
Page 14 and 15: Instead of one raythough the center
Page 16 and 17: uniform random numbersFirst idea is
Page 18 and 19: Poisson Distributions10.90.810.90.8
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Page 24 and 25: Next?CSE 472 Spring 201347Reflectio
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Page 36 and 37: Photon map•Photon by light-based

Raytracing

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