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Fixed another fresnel bug.

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Wally Hackenslacker
2017-02-12 20:14:12 -04:00
parent 501e2afc14
commit a5b7fc0406
1 changed files with 3 additions and 2 deletions
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5
tracer.cpp
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@@ -12,8 +12,9 @@ float Tracer::fresnel(const vec3 & i, const vec3 & n, const float ir1, const flo
float cos_t1 = dot(i, n); float cos_t1 = dot(i, n);
float cos_t2 = dot(normalize(refract(i, n, ir1 / ir2)), n); float cos_t2 = dot(normalize(refract(i, n, ir1 / ir2)), n);
float cos_t2s = (cos_t2 * cos_t2); float cos_t2s = (cos_t2 * cos_t2);
cos_t2s = cos_t2s > 1.0f ? 1.0 : cos_t2s; float omcos_t2s = 1.0f - cos_t2s;
float sin_t2 = (ir1 / ir2) * glm::sqrt(1.0f - cos_t2s); omcos_t2s = omcos_t2s < 0.0f ? 0.0f : omcos_t2s;
float sin_t2 = (ir1 / ir2) * glm::sqrt(omcos_t2s);
if (sin_t2 >= 1.0f) if (sin_t2 >= 1.0f)
return 1.0f; return 1.0f;