forked from bartvdbraak/blender
3306afac87
A new hair bsdf node, with two closure options, is added. These closures allow the generation of the reflective and transmission components of hair. The node allows control of the highlight colour, roughness and angular shift. Llimitations include: -No glint or fresnel adjustments. -The 'offset' is un-used when triangle primitives are used.
354 lines
12 KiB
C
354 lines
12 KiB
C
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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#include "../closure/bsdf_ashikhmin_velvet.h"
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#include "../closure/bsdf_diffuse.h"
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#include "../closure/bsdf_oren_nayar.h"
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#include "../closure/bsdf_phong_ramp.h"
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#include "../closure/bsdf_diffuse_ramp.h"
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#include "../closure/bsdf_microfacet.h"
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#include "../closure/bsdf_reflection.h"
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#include "../closure/bsdf_refraction.h"
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#include "../closure/bsdf_transparent.h"
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#ifdef __ANISOTROPIC__
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#include "../closure/bsdf_ward.h"
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#endif
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#include "../closure/bsdf_westin.h"
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#include "../closure/bsdf_toon.h"
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#include "../closure/bsdf_hair.h"
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#ifdef __SUBSURFACE__
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#include "../closure/bssrdf.h"
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#endif
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CCL_NAMESPACE_BEGIN
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__device int bsdf_sample(KernelGlobals *kg, const ShaderData *sd, const ShaderClosure *sc, float randu, float randv, float3 *eval, float3 *omega_in, differential3 *domega_in, float *pdf)
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{
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int label;
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#ifdef __OSL__
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if(kg->osl && sc->prim)
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return OSLShader::bsdf_sample(sd, sc, randu, randv, *eval, *omega_in, *domega_in, *pdf);
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#endif
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switch(sc->type) {
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case CLOSURE_BSDF_DIFFUSE_ID:
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case CLOSURE_BSDF_BSSRDF_ID:
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label = bsdf_diffuse_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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#ifdef __SVM__
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case CLOSURE_BSDF_OREN_NAYAR_ID:
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label = bsdf_oren_nayar_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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/*case CLOSURE_BSDF_PHONG_RAMP_ID:
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label = bsdf_phong_ramp_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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case CLOSURE_BSDF_DIFFUSE_RAMP_ID:
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label = bsdf_diffuse_ramp_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;*/
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case CLOSURE_BSDF_TRANSLUCENT_ID:
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label = bsdf_translucent_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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case CLOSURE_BSDF_REFLECTION_ID:
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label = bsdf_reflection_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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case CLOSURE_BSDF_REFRACTION_ID:
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label = bsdf_refraction_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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case CLOSURE_BSDF_TRANSPARENT_ID:
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label = bsdf_transparent_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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case CLOSURE_BSDF_MICROFACET_GGX_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_REFRACTION_ID:
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label = bsdf_microfacet_ggx_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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case CLOSURE_BSDF_MICROFACET_BECKMANN_ID:
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case CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID:
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label = bsdf_microfacet_beckmann_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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#ifdef __ANISOTROPIC__
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case CLOSURE_BSDF_WARD_ID:
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label = bsdf_ward_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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#endif
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case CLOSURE_BSDF_ASHIKHMIN_VELVET_ID:
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label = bsdf_ashikhmin_velvet_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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case CLOSURE_BSDF_DIFFUSE_TOON_ID:
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label = bsdf_diffuse_toon_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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case CLOSURE_BSDF_GLOSSY_TOON_ID:
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label = bsdf_glossy_toon_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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case CLOSURE_BSDF_WESTIN_BACKSCATTER_ID:
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label = bsdf_westin_backscatter_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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case CLOSURE_BSDF_WESTIN_SHEEN_ID:
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label = bsdf_westin_sheen_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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case CLOSURE_BSDF_HAIR_REFLECTION_ID:
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label = bsdf_hair_reflection_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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case CLOSURE_BSDF_HAIR_TRANSMISSION_ID:
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label = bsdf_hair_transmission_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv,
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eval, omega_in, &domega_in->dx, &domega_in->dy, pdf);
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break;
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#endif
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default:
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label = LABEL_NONE;
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break;
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}
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return label;
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}
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__device float3 bsdf_eval(KernelGlobals *kg, const ShaderData *sd, const ShaderClosure *sc, const float3 omega_in, float *pdf)
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{
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float3 eval;
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#ifdef __OSL__
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if(kg->osl && sc->prim)
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return OSLShader::bsdf_eval(sd, sc, omega_in, *pdf);
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#endif
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if(dot(sd->Ng, omega_in) >= 0.0f) {
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switch(sc->type) {
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case CLOSURE_BSDF_DIFFUSE_ID:
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case CLOSURE_BSDF_BSSRDF_ID:
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eval = bsdf_diffuse_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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#ifdef __SVM__
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case CLOSURE_BSDF_OREN_NAYAR_ID:
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eval = bsdf_oren_nayar_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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/*case CLOSURE_BSDF_PHONG_RAMP_ID:
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eval = bsdf_phong_ramp_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_DIFFUSE_RAMP_ID:
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eval = bsdf_diffuse_ramp_eval_reflect(sc, sd->I, omega_in, pdf);
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break;*/
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case CLOSURE_BSDF_TRANSLUCENT_ID:
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eval = bsdf_translucent_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_REFLECTION_ID:
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eval = bsdf_reflection_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_REFRACTION_ID:
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eval = bsdf_refraction_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_TRANSPARENT_ID:
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eval = bsdf_transparent_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_MICROFACET_GGX_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_REFRACTION_ID:
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eval = bsdf_microfacet_ggx_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_MICROFACET_BECKMANN_ID:
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case CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID:
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eval = bsdf_microfacet_beckmann_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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#ifdef __ANISOTROPIC__
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case CLOSURE_BSDF_WARD_ID:
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eval = bsdf_ward_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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#endif
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case CLOSURE_BSDF_ASHIKHMIN_VELVET_ID:
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eval = bsdf_ashikhmin_velvet_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_DIFFUSE_TOON_ID:
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eval = bsdf_diffuse_toon_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_GLOSSY_TOON_ID:
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eval = bsdf_glossy_toon_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_WESTIN_BACKSCATTER_ID:
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eval = bsdf_westin_backscatter_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_WESTIN_SHEEN_ID:
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eval = bsdf_westin_sheen_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_HAIR_REFLECTION_ID:
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eval = bsdf_hair_reflection_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_HAIR_TRANSMISSION_ID:
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eval = bsdf_hair_transmission_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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#endif
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default:
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eval = make_float3(0.0f, 0.0f, 0.0f);
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break;
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}
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}
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else {
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switch(sc->type) {
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case CLOSURE_BSDF_DIFFUSE_ID:
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case CLOSURE_BSDF_BSSRDF_ID:
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eval = bsdf_diffuse_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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#ifdef __SVM__
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case CLOSURE_BSDF_OREN_NAYAR_ID:
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eval = bsdf_oren_nayar_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_TRANSLUCENT_ID:
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eval = bsdf_translucent_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_REFLECTION_ID:
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eval = bsdf_reflection_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_REFRACTION_ID:
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eval = bsdf_refraction_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_TRANSPARENT_ID:
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eval = bsdf_transparent_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_MICROFACET_GGX_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_REFRACTION_ID:
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eval = bsdf_microfacet_ggx_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_MICROFACET_BECKMANN_ID:
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case CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID:
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eval = bsdf_microfacet_beckmann_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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#ifdef __ANISOTROPIC__
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case CLOSURE_BSDF_WARD_ID:
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eval = bsdf_ward_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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#endif
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case CLOSURE_BSDF_ASHIKHMIN_VELVET_ID:
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eval = bsdf_ashikhmin_velvet_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_DIFFUSE_TOON_ID:
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eval = bsdf_diffuse_toon_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_GLOSSY_TOON_ID:
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eval = bsdf_glossy_toon_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_WESTIN_BACKSCATTER_ID:
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eval = bsdf_westin_backscatter_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_WESTIN_SHEEN_ID:
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eval = bsdf_westin_sheen_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_HAIR_REFLECTION_ID:
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eval = bsdf_hair_reflection_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_HAIR_TRANSMISSION_ID:
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eval = bsdf_hair_transmission_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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#endif
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default:
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eval = make_float3(0.0f, 0.0f, 0.0f);
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break;
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}
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}
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return eval;
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}
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__device void bsdf_blur(KernelGlobals *kg, ShaderClosure *sc, float roughness)
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{
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#ifdef __OSL__
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if(kg->osl && sc->prim) {
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OSLShader::bsdf_blur(sc, roughness);
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return;
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}
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#endif
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switch(sc->type) {
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case CLOSURE_BSDF_DIFFUSE_ID:
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case CLOSURE_BSDF_BSSRDF_ID:
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bsdf_diffuse_blur(sc, roughness);
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break;
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#ifdef __SVM__
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case CLOSURE_BSDF_OREN_NAYAR_ID:
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bsdf_oren_nayar_blur(sc, roughness);
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break;
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/*case CLOSURE_BSDF_PHONG_RAMP_ID:
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bsdf_phong_ramp_blur(sc, roughness);
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break;
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case CLOSURE_BSDF_DIFFUSE_RAMP_ID:
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bsdf_diffuse_ramp_blur(sc, roughness);
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break;*/
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case CLOSURE_BSDF_TRANSLUCENT_ID:
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bsdf_translucent_blur(sc, roughness);
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break;
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case CLOSURE_BSDF_REFLECTION_ID:
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bsdf_reflection_blur(sc, roughness);
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break;
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case CLOSURE_BSDF_REFRACTION_ID:
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bsdf_refraction_blur(sc, roughness);
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break;
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case CLOSURE_BSDF_TRANSPARENT_ID:
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bsdf_transparent_blur(sc, roughness);
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break;
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case CLOSURE_BSDF_MICROFACET_GGX_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_REFRACTION_ID:
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bsdf_microfacet_ggx_blur(sc, roughness);
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break;
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case CLOSURE_BSDF_MICROFACET_BECKMANN_ID:
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case CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID:
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bsdf_microfacet_beckmann_blur(sc, roughness);
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break;
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#ifdef __ANISOTROPIC__
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case CLOSURE_BSDF_WARD_ID:
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bsdf_ward_blur(sc, roughness);
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break;
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#endif
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case CLOSURE_BSDF_ASHIKHMIN_VELVET_ID:
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bsdf_ashikhmin_velvet_blur(sc, roughness);
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break;
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case CLOSURE_BSDF_DIFFUSE_TOON_ID:
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bsdf_diffuse_toon_blur(sc, roughness);
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break;
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case CLOSURE_BSDF_GLOSSY_TOON_ID:
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bsdf_glossy_toon_blur(sc, roughness);
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break;
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case CLOSURE_BSDF_WESTIN_BACKSCATTER_ID:
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bsdf_westin_backscatter_blur(sc, roughness);
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break;
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case CLOSURE_BSDF_WESTIN_SHEEN_ID:
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bsdf_westin_sheen_blur(sc, roughness);
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break;
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case CLOSURE_BSDF_HAIR_REFLECTION_ID:
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case CLOSURE_BSDF_HAIR_TRANSMISSION_ID:
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bsdf_hair_reflection_blur(sc, roughness);
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break;
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#endif
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default:
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break;
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}
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}
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CCL_NAMESPACE_END
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