why use reflectance(cos_theta, ri) > random_double() but not blend it by linear interpolation? #1633
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JTtNinjaCode
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why use reflectance(cos_theta, ri) > random_double() but not blend it by linear interpolation?
#1633
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why use reflectance(cos_theta, ri) > random_double() but not blend it by linear interpolation?
As far as I know, reflectance should represent the ratio between the results of reflection and refraction. Why not simply blend them using a formula like
a * refract + (1-a) * reflect? Is there any concept I might have overlooked?Additionally, I hope the article can provide more information on the Fresnel equations. In the current article, this part is just presented as a "magic function", and I would appreciate more educational content on this topic."
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