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| author | Mai Lavelle <mai.lavelle@gmail.com> | 2017-05-19 04:14:31 +0300 |
|---|---|---|
| committer | Mai Lavelle <mai.lavelle@gmail.com> | 2017-05-19 04:39:23 +0300 |
| commit | 29f4a8510cf4c555e7f1658e928636f38f4f84db (patch) | |
| tree | ab241cfbaa9ff8e03cb5356d6e1cd861189e6e58 /intern/cycles/kernel/closure | |
| parent | a21277b99680e02fcc09ea47026f063b1363fe40 (diff) | |
Cycles: Fix random noise pattern seen with multiscatter bsdf and split kernel
Differentials were unset if roughness was low giving undefined behavior.
Diffstat (limited to 'intern/cycles/kernel/closure')
| -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; } |