diff options
Diffstat (limited to 'intern/cycles/kernel/closure/bsdf.h')
| -rw-r--r-- | intern/cycles/kernel/closure/bsdf.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/intern/cycles/kernel/closure/bsdf.h b/intern/cycles/kernel/closure/bsdf.h index a6bba8bf74d..a04c157dc40 100644 --- a/intern/cycles/kernel/closure/bsdf.h +++ b/intern/cycles/kernel/closure/bsdf.h @@ -435,5 +435,23 @@ ccl_device bool bsdf_merge(ShaderClosure *a, ShaderClosure *b) #endif } +/* Classifies a closure as diffuse-like or specular-like. + * This is needed for the denoising feature pass generation, + * which are written on the first bounce where more than 25% + * of the sampling weight belongs to diffuse-line closures. */ +ccl_device_inline bool bsdf_is_specular_like(ShaderClosure *sc) +{ + if(CLOSURE_IS_BSDF_TRANSPARENT(sc->type)) { + return true; + } + + if(CLOSURE_IS_BSDF_MICROFACET(sc->type)) { + MicrofacetBsdf *bsdf = (MicrofacetBsdf*) sc; + return (bsdf->alpha_x*bsdf->alpha_y <= 0.075f*0.075f); + } + + return false; +} + CCL_NAMESPACE_END |