diff options
Diffstat (limited to 'intern/cycles/kernel/svm/closure.h')
| -rw-r--r-- | intern/cycles/kernel/svm/closure.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/intern/cycles/kernel/svm/closure.h b/intern/cycles/kernel/svm/closure.h index 68ddc2fa306..88b44cdbacf 100644 --- a/intern/cycles/kernel/svm/closure.h +++ b/intern/cycles/kernel/svm/closure.h @@ -395,8 +395,10 @@ ccl_device_noinline int svm_node_closure_bsdf(KernelGlobals kg, if (kernel_data.integrator.caustics_refractive || (path_flag & PATH_RAY_DIFFUSE) == 0) # endif { + /* This is to prevent mnee from receiving a null bsdf. */ + float refraction_fresnel = fmaxf(0.0001f, 1.0f - fresnel); ccl_private MicrofacetBsdf *bsdf = (ccl_private MicrofacetBsdf *)bsdf_alloc( - sd, sizeof(MicrofacetBsdf), base_color * glass_weight * (1.0f - fresnel)); + sd, sizeof(MicrofacetBsdf), base_color * glass_weight * refraction_fresnel); if (bsdf) { bsdf->N = N; bsdf->T = make_float3(0.0f, 0.0f, 0.0f); @@ -674,8 +676,10 @@ ccl_device_noinline int svm_node_closure_bsdf(KernelGlobals kg, if (kernel_data.integrator.caustics_refractive || (path_flag & PATH_RAY_DIFFUSE) == 0) #endif { + /* This is to prevent mnee from receiving a null bsdf. */ + float refraction_fresnel = fmaxf(0.0001f, 1.0f - fresnel); ccl_private MicrofacetBsdf *bsdf = (ccl_private MicrofacetBsdf *)bsdf_alloc( - sd, sizeof(MicrofacetBsdf), weight * (1.0f - fresnel)); + sd, sizeof(MicrofacetBsdf), weight * refraction_fresnel); if (bsdf) { bsdf->N = N; |