diff options
| -rw-r--r-- | intern/cycles/kernel/closure/bsdf_microfacet_multi.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/intern/cycles/kernel/closure/bsdf_microfacet_multi.h b/intern/cycles/kernel/closure/bsdf_microfacet_multi.h index ec0c9823445..b07b515c405 100644 --- a/intern/cycles/kernel/closure/bsdf_microfacet_multi.h +++ b/intern/cycles/kernel/closure/bsdf_microfacet_multi.h @@ -406,6 +406,10 @@ ccl_device int bsdf_microfacet_multi_ggx_sample(KernelGlobals *kg, const ShaderC *omega_in = 2*dot(Z, I)*Z - I; *pdf = 1e6f; *eval = make_float3(1e6f, 1e6f, 1e6f); +#ifdef __RAY_DIFFERENTIALS__ + *domega_in_dx = (2 * dot(Z, dIdx)) * Z - dIdx; + *domega_in_dy = (2 * dot(Z, dIdy)) * Z - dIdy; +#endif return LABEL_REFLECT|LABEL_SINGULAR; } |