diff options
Diffstat (limited to 'intern/cycles/kernel/closure/bsdf.h')
| -rw-r--r-- | intern/cycles/kernel/closure/bsdf.h | 48 |
1 files changed, 27 insertions, 21 deletions
diff --git a/intern/cycles/kernel/closure/bsdf.h b/intern/cycles/kernel/closure/bsdf.h index 4cc61e8ee71..6070fd983f5 100644 --- a/intern/cycles/kernel/closure/bsdf.h +++ b/intern/cycles/kernel/closure/bsdf.h @@ -119,13 +119,16 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, differential3 *domega_in, float *pdf) { + /* For curves use the smooth normal, particularly for ribbons the geometric + * normal gives too much darkening otherwise. */ int label; + const float3 Ng = (sd->type & PRIMITIVE_ALL_CURVE) ? sc->N : sd->Ng; switch (sc->type) { case CLOSURE_BSDF_DIFFUSE_ID: case CLOSURE_BSDF_BSSRDF_ID: label = bsdf_diffuse_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -140,7 +143,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, #ifdef __SVM__ case CLOSURE_BSDF_OREN_NAYAR_ID: label = bsdf_oren_nayar_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -155,7 +158,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, # ifdef __OSL__ case CLOSURE_BSDF_PHONG_RAMP_ID: label = bsdf_phong_ramp_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -169,7 +172,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, break; case CLOSURE_BSDF_DIFFUSE_RAMP_ID: label = bsdf_diffuse_ramp_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -184,7 +187,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, # endif case CLOSURE_BSDF_TRANSLUCENT_ID: label = bsdf_translucent_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -198,7 +201,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, break; case CLOSURE_BSDF_REFLECTION_ID: label = bsdf_reflection_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -212,7 +215,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, break; case CLOSURE_BSDF_REFRACTION_ID: label = bsdf_refraction_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -226,7 +229,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, break; case CLOSURE_BSDF_TRANSPARENT_ID: label = bsdf_transparent_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -244,7 +247,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, case CLOSURE_BSDF_MICROFACET_GGX_REFRACTION_ID: label = bsdf_microfacet_ggx_sample(kg, sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -260,7 +263,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, case CLOSURE_BSDF_MICROFACET_MULTI_GGX_FRESNEL_ID: label = bsdf_microfacet_multi_ggx_sample(kg, sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -277,7 +280,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_FRESNEL_ID: label = bsdf_microfacet_multi_ggx_glass_sample(kg, sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -294,7 +297,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, case CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID: label = bsdf_microfacet_beckmann_sample(kg, sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -308,7 +311,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, break; case CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ID: label = bsdf_ashikhmin_shirley_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -322,7 +325,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, break; case CLOSURE_BSDF_ASHIKHMIN_VELVET_ID: label = bsdf_ashikhmin_velvet_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -336,7 +339,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, break; case CLOSURE_BSDF_DIFFUSE_TOON_ID: label = bsdf_diffuse_toon_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -350,7 +353,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, break; case CLOSURE_BSDF_GLOSSY_TOON_ID: label = bsdf_glossy_toon_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -364,7 +367,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, break; case CLOSURE_BSDF_HAIR_REFLECTION_ID: label = bsdf_hair_reflection_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -378,7 +381,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, break; case CLOSURE_BSDF_HAIR_TRANSMISSION_ID: label = bsdf_hair_transmission_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -398,7 +401,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, case CLOSURE_BSDF_PRINCIPLED_DIFFUSE_ID: case CLOSURE_BSDF_BSSRDF_PRINCIPLED_ID: label = bsdf_principled_diffuse_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -412,7 +415,7 @@ ccl_device_inline int bsdf_sample(KernelGlobals *kg, break; case CLOSURE_BSDF_PRINCIPLED_SHEEN_ID: label = bsdf_principled_sheen_sample(sc, - sd->Ng, + Ng, sd->I, sd->dI.dx, sd->dI.dy, @@ -485,9 +488,12 @@ ccl_device_inline const float3 omega_in, float *pdf) { + /* For curves use the smooth normal, particularly for ribbons the geometric + * normal gives too much darkening otherwise. */ + const float3 Ng = (sd->type & PRIMITIVE_ALL_CURVE) ? sd->N : sd->Ng; float3 eval; - if (dot(sd->Ng, omega_in) >= 0.0f) { + if (dot(Ng, omega_in) >= 0.0f) { switch (sc->type) { case CLOSURE_BSDF_DIFFUSE_ID: case CLOSURE_BSDF_BSSRDF_ID: |