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Fix T38615: cycles rendering beckmann/GGX refraction wrong with IOR equal to 1.

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Brecht Van Lommel
2014-02-12 22:50:31 +01:00
parent f462e8a9c8
commit 8547d17739
1 changed files with 2 additions and 2 deletions
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4
intern/cycles/kernel/closure/bsdf_microfacet.h
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@@ -219,7 +219,7 @@ ccl_device int bsdf_microfacet_ggx_sample(const ShaderClosure *sc, float3 Ng, fl
*domega_in_dy = dTdy; *domega_in_dy = dTdy;
#endif #endif
if (m_ag <= 1e-4f) { if (m_ag <= 1e-4f || fabsf(m_eta - 1.0f) < 1e-4f) {
// some high number for MIS // some high number for MIS
*pdf = 1e6f; *pdf = 1e6f;
*eval = make_float3(1e6f, 1e6f, 1e6f); *eval = make_float3(1e6f, 1e6f, 1e6f);
@@ -450,7 +450,7 @@ ccl_device int bsdf_microfacet_beckmann_sample(const ShaderClosure *sc, float3 N
*domega_in_dx = dTdx; *domega_in_dx = dTdx;
*domega_in_dy = dTdy; *domega_in_dy = dTdy;
#endif #endif
if (m_ab <= 1e-4f) { if (m_ab <= 1e-4f || fabsf(m_eta - 1.0f) < 1e-4f) {
// some high number for MIS // some high number for MIS
*pdf = 1e6f; *pdf = 1e6f;
*eval = make_float3(1e6f, 1e6f, 1e6f); *eval = make_float3(1e6f, 1e6f, 1e6f);