forked from bartvdbraak/blender
43b374e8c5
This commit contains the first part of the new Cycles denoising option, which filters the resulting image using information gathered during rendering to get rid of noise while preserving visual features as well as possible. To use the option, enable it in the render layer options. The default settings fit a wide range of scenes, but the user can tweak individual settings to control the tradeoff between a noise-free image, image details, and calculation time. Note that the denoiser may still change in the future and that some features are not implemented yet. The most important missing feature is animation denoising, which uses information from multiple frames at once to produce a flicker-free and smoother result. These features will be added in the future. Finally, thanks to all the people who supported this project: - Google (through the GSoC) and Theory Studios for sponsoring the development - The authors of the papers I used for implementing the denoiser (more details on them will be included in the technical docs) - The other Cycles devs for feedback on the code, especially Sergey for mentoring the GSoC project and Brecht for the code review! - And of course the users who helped with testing, reported bugs and things that could and/or should work better!
458 lines
17 KiB
C
458 lines
17 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 "kernel/closure/bsdf_ashikhmin_velvet.h"
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#include "kernel/closure/bsdf_diffuse.h"
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#include "kernel/closure/bsdf_oren_nayar.h"
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#include "kernel/closure/bsdf_phong_ramp.h"
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#include "kernel/closure/bsdf_diffuse_ramp.h"
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#include "kernel/closure/bsdf_microfacet.h"
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#include "kernel/closure/bsdf_microfacet_multi.h"
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#include "kernel/closure/bsdf_reflection.h"
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#include "kernel/closure/bsdf_refraction.h"
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#include "kernel/closure/bsdf_transparent.h"
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#include "kernel/closure/bsdf_ashikhmin_shirley.h"
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#include "kernel/closure/bsdf_toon.h"
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#include "kernel/closure/bsdf_hair.h"
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#include "kernel/closure/bsdf_principled_diffuse.h"
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#include "kernel/closure/bsdf_principled_sheen.h"
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#ifdef __SUBSURFACE__
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# include "kernel/closure/bssrdf.h"
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#endif
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#ifdef __VOLUME__
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# include "kernel/closure/volume.h"
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#endif
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CCL_NAMESPACE_BEGIN
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ccl_device_forceinline int bsdf_sample(KernelGlobals *kg,
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ShaderData *sd,
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const ShaderClosure *sc,
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float randu,
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float randv,
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float3 *eval,
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float3 *omega_in,
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differential3 *domega_in,
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float *pdf)
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{
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int label;
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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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#ifdef __OSL__
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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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#endif
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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_FRESNEL_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_CLEARCOAT_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_ANISO_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_ANISO_FRESNEL_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_REFRACTION_ID:
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label = bsdf_microfacet_ggx_sample(kg, 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_MULTI_GGX_ID:
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case CLOSURE_BSDF_MICROFACET_MULTI_GGX_FRESNEL_ID:
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label = bsdf_microfacet_multi_ggx_sample(kg, 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, &sd->lcg_state);
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break;
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case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_ID:
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case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_FRESNEL_ID:
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label = bsdf_microfacet_multi_ggx_glass_sample(kg, 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, &sd->lcg_state);
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break;
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case CLOSURE_BSDF_MICROFACET_BECKMANN_ID:
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case CLOSURE_BSDF_MICROFACET_BECKMANN_ANISO_ID:
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case CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID:
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label = bsdf_microfacet_beckmann_sample(kg, 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_ASHIKHMIN_SHIRLEY_ID:
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case CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ANISO_ID:
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label = bsdf_ashikhmin_shirley_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_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_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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#ifdef __PRINCIPLED__
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case CLOSURE_BSDF_PRINCIPLED_DIFFUSE_ID:
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case CLOSURE_BSDF_BSSRDF_PRINCIPLED_ID:
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label = bsdf_principled_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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case CLOSURE_BSDF_PRINCIPLED_SHEEN_ID:
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label = bsdf_principled_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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#endif /* __PRINCIPLED__ */
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#endif
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#ifdef __VOLUME__
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case CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID:
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label = volume_henyey_greenstein_sample(sc, sd->I, sd->dI.dx, sd->dI.dy, randu, randv, 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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#ifndef __KERNEL_CUDA__
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ccl_device
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#else
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ccl_device_forceinline
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#endif
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float3 bsdf_eval(KernelGlobals *kg,
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ShaderData *sd,
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const ShaderClosure *sc,
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const float3 omega_in,
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float *pdf)
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{
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float3 eval;
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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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#ifdef __OSL__
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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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#endif
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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_FRESNEL_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_CLEARCOAT_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_ANISO_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_ANISO_FRESNEL_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_MULTI_GGX_ID:
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case CLOSURE_BSDF_MICROFACET_MULTI_GGX_FRESNEL_ID:
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eval = bsdf_microfacet_multi_ggx_eval_reflect(sc, sd->I, omega_in, pdf, &sd->lcg_state);
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break;
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case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_ID:
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case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_FRESNEL_ID:
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eval = bsdf_microfacet_multi_ggx_glass_eval_reflect(sc, sd->I, omega_in, pdf, &sd->lcg_state);
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break;
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case CLOSURE_BSDF_MICROFACET_BECKMANN_ID:
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case CLOSURE_BSDF_MICROFACET_BECKMANN_ANISO_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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case CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ID:
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case CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ANISO_ID:
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eval = bsdf_ashikhmin_shirley_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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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_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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#ifdef __PRINCIPLED__
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case CLOSURE_BSDF_PRINCIPLED_DIFFUSE_ID:
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case CLOSURE_BSDF_BSSRDF_PRINCIPLED_ID:
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eval = bsdf_principled_diffuse_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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case CLOSURE_BSDF_PRINCIPLED_SHEEN_ID:
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eval = bsdf_principled_sheen_eval_reflect(sc, sd->I, omega_in, pdf);
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break;
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#endif /* __PRINCIPLED__ */
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#endif
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#ifdef __VOLUME__
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case CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID:
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eval = volume_henyey_greenstein_eval_phase(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_FRESNEL_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_CLEARCOAT_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_ANISO_ID:
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case CLOSURE_BSDF_MICROFACET_GGX_ANISO_FRESNEL_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_MULTI_GGX_ID:
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case CLOSURE_BSDF_MICROFACET_MULTI_GGX_FRESNEL_ID:
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eval = bsdf_microfacet_multi_ggx_eval_transmit(sc, sd->I, omega_in, pdf, &sd->lcg_state);
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break;
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case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_ID:
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case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_FRESNEL_ID:
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eval = bsdf_microfacet_multi_ggx_glass_eval_transmit(sc, sd->I, omega_in, pdf, &sd->lcg_state);
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break;
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case CLOSURE_BSDF_MICROFACET_BECKMANN_ID:
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case CLOSURE_BSDF_MICROFACET_BECKMANN_ANISO_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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case CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ID:
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case CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ANISO_ID:
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eval = bsdf_ashikhmin_shirley_eval_transmit(sc, sd->I, omega_in, pdf);
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break;
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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_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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#ifdef __PRINCIPLED__
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case CLOSURE_BSDF_PRINCIPLED_DIFFUSE_ID:
|
|
case CLOSURE_BSDF_BSSRDF_PRINCIPLED_ID:
|
|
eval = bsdf_principled_diffuse_eval_transmit(sc, sd->I, omega_in, pdf);
|
|
break;
|
|
case CLOSURE_BSDF_PRINCIPLED_SHEEN_ID:
|
|
eval = bsdf_principled_sheen_eval_transmit(sc, sd->I, omega_in, pdf);
|
|
break;
|
|
#endif /* __PRINCIPLED__ */
|
|
#endif
|
|
#ifdef __VOLUME__
|
|
case CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID:
|
|
eval = volume_henyey_greenstein_eval_phase(sc, sd->I, omega_in, pdf);
|
|
break;
|
|
#endif
|
|
default:
|
|
eval = make_float3(0.0f, 0.0f, 0.0f);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return eval;
|
|
}
|
|
|
|
ccl_device void bsdf_blur(KernelGlobals *kg, ShaderClosure *sc, float roughness)
|
|
{
|
|
/* ToDo: do we want to blur volume closures? */
|
|
#ifdef __SVM__
|
|
switch(sc->type) {
|
|
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_ID:
|
|
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_FRESNEL_ID:
|
|
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_ID:
|
|
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_FRESNEL_ID:
|
|
bsdf_microfacet_multi_ggx_blur(sc, roughness);
|
|
break;
|
|
case CLOSURE_BSDF_MICROFACET_GGX_ID:
|
|
case CLOSURE_BSDF_MICROFACET_GGX_FRESNEL_ID:
|
|
case CLOSURE_BSDF_MICROFACET_GGX_CLEARCOAT_ID:
|
|
case CLOSURE_BSDF_MICROFACET_GGX_ANISO_ID:
|
|
case CLOSURE_BSDF_MICROFACET_GGX_ANISO_FRESNEL_ID:
|
|
case CLOSURE_BSDF_MICROFACET_GGX_REFRACTION_ID:
|
|
bsdf_microfacet_ggx_blur(sc, roughness);
|
|
break;
|
|
case CLOSURE_BSDF_MICROFACET_BECKMANN_ID:
|
|
case CLOSURE_BSDF_MICROFACET_BECKMANN_ANISO_ID:
|
|
case CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID:
|
|
bsdf_microfacet_beckmann_blur(sc, roughness);
|
|
break;
|
|
case CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ID:
|
|
case CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ANISO_ID:
|
|
bsdf_ashikhmin_shirley_blur(sc, roughness);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
ccl_device bool bsdf_merge(ShaderClosure *a, ShaderClosure *b)
|
|
{
|
|
#ifdef __SVM__
|
|
switch(a->type) {
|
|
case CLOSURE_BSDF_TRANSPARENT_ID:
|
|
return true;
|
|
case CLOSURE_BSDF_DIFFUSE_ID:
|
|
case CLOSURE_BSDF_BSSRDF_ID:
|
|
case CLOSURE_BSDF_TRANSLUCENT_ID:
|
|
return bsdf_diffuse_merge(a, b);
|
|
case CLOSURE_BSDF_OREN_NAYAR_ID:
|
|
return bsdf_oren_nayar_merge(a, b);
|
|
case CLOSURE_BSDF_REFLECTION_ID:
|
|
case CLOSURE_BSDF_REFRACTION_ID:
|
|
case CLOSURE_BSDF_MICROFACET_GGX_ID:
|
|
case CLOSURE_BSDF_MICROFACET_GGX_FRESNEL_ID:
|
|
case CLOSURE_BSDF_MICROFACET_GGX_CLEARCOAT_ID:
|
|
case CLOSURE_BSDF_MICROFACET_GGX_ANISO_ID:
|
|
case CLOSURE_BSDF_MICROFACET_GGX_ANISO_FRESNEL_ID:
|
|
case CLOSURE_BSDF_MICROFACET_GGX_REFRACTION_ID:
|
|
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_ID:
|
|
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_FRESNEL_ID:
|
|
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_ID:
|
|
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_FRESNEL_ID:
|
|
case CLOSURE_BSDF_MICROFACET_BECKMANN_ID:
|
|
case CLOSURE_BSDF_MICROFACET_BECKMANN_ANISO_ID:
|
|
case CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID:
|
|
case CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ID:
|
|
case CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ANISO_ID:
|
|
return bsdf_microfacet_merge(a, b);
|
|
case CLOSURE_BSDF_ASHIKHMIN_VELVET_ID:
|
|
return bsdf_ashikhmin_velvet_merge(a, b);
|
|
case CLOSURE_BSDF_DIFFUSE_TOON_ID:
|
|
case CLOSURE_BSDF_GLOSSY_TOON_ID:
|
|
return bsdf_toon_merge(a, b);
|
|
case CLOSURE_BSDF_HAIR_REFLECTION_ID:
|
|
case CLOSURE_BSDF_HAIR_TRANSMISSION_ID:
|
|
return bsdf_hair_merge(a, b);
|
|
#ifdef __VOLUME__
|
|
case CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID:
|
|
return volume_henyey_greenstein_merge(a, b);
|
|
#endif
|
|
default:
|
|
return false;
|
|
}
|
|
#else
|
|
return false;
|
|
#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
|
|
|