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| author | Sergey Sharybin <sergey.vfx@gmail.com> | 2016-02-08 16:51:57 +0300 |
|---|---|---|
| committer | Sergey Sharybin <sergey.vfx@gmail.com> | 2016-02-08 16:54:11 +0300 |
| commit | dae8326d1e98632be42e525011c061d46c1d0e2a (patch) | |
| tree | e987859e14a28e95c7dd74503e85732e2219d7cd /intern/cycles/kernel/closure/bssrdf.h | |
| parent | 52668c56b74f75c45a6b5176704dfd168fd3e6ac (diff) | |
Fix T47356: Too sharp falloww with Burley BSSRDF
After the clamping commit we need to bump BURLEY_TRUNCATE
constant a bit, otherwise mean free path does not really
match the disk radius needed for importance sampling.
Diffstat (limited to 'intern/cycles/kernel/closure/bssrdf.h')
| -rw-r--r-- | intern/cycles/kernel/closure/bssrdf.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/intern/cycles/kernel/closure/bssrdf.h b/intern/cycles/kernel/closure/bssrdf.h index a53fedb930a..2e32795a781 100644 --- a/intern/cycles/kernel/closure/bssrdf.h +++ b/intern/cycles/kernel/closure/bssrdf.h @@ -181,7 +181,7 @@ ccl_device void bssrdf_cubic_sample(ShaderClosure *sc, float xi, float *r, float * the mean free length, but still not too big so sampling is still * effective. Might need some further tweaks. */ -#define BURLEY_TRUNCATE 10.0f +#define BURLEY_TRUNCATE 30.0f #define BURLEY_TRUNCATE_CDF 0.973233f // cdf(BURLEY_TRUNCATE) ccl_device_inline float bssrdf_burley_fitting(float A) |