Files
blender/intern/cycles/kernel/osl/osl_closures.cpp
2019-05-01 21:41:07 +10:00

908 lines
34 KiB
C++

/*
* Adapted from Open Shading Language with this license:
*
* Copyright (c) 2009-2010 Sony Pictures Imageworks Inc., et al.
* All Rights Reserved.
*
* Modifications Copyright 2011-2018, Blender Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Sony Pictures Imageworks nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <OSL/genclosure.h>
#include <OSL/oslclosure.h>
#include "kernel/osl/osl_closures.h"
#include "kernel/osl/osl_shader.h"
#include "util/util_math.h"
#include "util/util_param.h"
#include "kernel/kernel_types.h"
#include "kernel/kernel_compat_cpu.h"
#include "kernel/split/kernel_split_data_types.h"
#include "kernel/kernel_globals.h"
#include "kernel/kernel_montecarlo.h"
#include "kernel/kernel_random.h"
#include "kernel/closure/alloc.h"
#include "kernel/closure/bsdf_util.h"
#include "kernel/closure/bsdf_ashikhmin_velvet.h"
#include "kernel/closure/bsdf_diffuse.h"
#include "kernel/closure/bsdf_microfacet.h"
#include "kernel/closure/bsdf_microfacet_multi.h"
#include "kernel/closure/bsdf_oren_nayar.h"
#include "kernel/closure/bsdf_reflection.h"
#include "kernel/closure/bsdf_refraction.h"
#include "kernel/closure/bsdf_transparent.h"
#include "kernel/closure/bsdf_ashikhmin_shirley.h"
#include "kernel/closure/bsdf_toon.h"
#include "kernel/closure/bsdf_hair.h"
#include "kernel/closure/bsdf_hair_principled.h"
#include "kernel/closure/bsdf_principled_diffuse.h"
#include "kernel/closure/bsdf_principled_sheen.h"
#include "kernel/closure/volume.h"
CCL_NAMESPACE_BEGIN
using namespace OSL;
/* BSDF class definitions */
BSDF_CLOSURE_CLASS_BEGIN(Diffuse, diffuse, DiffuseBsdf, LABEL_DIFFUSE)
CLOSURE_FLOAT3_PARAM(DiffuseClosure, params.N),
BSDF_CLOSURE_CLASS_END(Diffuse, diffuse)
BSDF_CLOSURE_CLASS_BEGIN(Translucent, translucent, DiffuseBsdf, LABEL_DIFFUSE)
CLOSURE_FLOAT3_PARAM(TranslucentClosure, params.N),
BSDF_CLOSURE_CLASS_END(Translucent, translucent)
BSDF_CLOSURE_CLASS_BEGIN(OrenNayar, oren_nayar, OrenNayarBsdf, LABEL_DIFFUSE)
CLOSURE_FLOAT3_PARAM(OrenNayarClosure, params.N),
CLOSURE_FLOAT_PARAM(OrenNayarClosure, params.roughness),
BSDF_CLOSURE_CLASS_END(OrenNayar, oren_nayar)
BSDF_CLOSURE_CLASS_BEGIN(Reflection, reflection, MicrofacetBsdf, LABEL_SINGULAR)
CLOSURE_FLOAT3_PARAM(ReflectionClosure, params.N),
BSDF_CLOSURE_CLASS_END(Reflection, reflection)
BSDF_CLOSURE_CLASS_BEGIN(Refraction, refraction, MicrofacetBsdf, LABEL_SINGULAR)
CLOSURE_FLOAT3_PARAM(RefractionClosure, params.N),
CLOSURE_FLOAT_PARAM(RefractionClosure, params.ior),
BSDF_CLOSURE_CLASS_END(Refraction, refraction)
BSDF_CLOSURE_CLASS_BEGIN(AshikhminVelvet, ashikhmin_velvet, VelvetBsdf, LABEL_DIFFUSE)
CLOSURE_FLOAT3_PARAM(AshikhminVelvetClosure, params.N),
CLOSURE_FLOAT_PARAM(AshikhminVelvetClosure, params.sigma),
BSDF_CLOSURE_CLASS_END(AshikhminVelvet, ashikhmin_velvet)
BSDF_CLOSURE_CLASS_BEGIN(AshikhminShirley,
ashikhmin_shirley_aniso,
MicrofacetBsdf,
LABEL_GLOSSY | LABEL_REFLECT)
CLOSURE_FLOAT3_PARAM(AshikhminShirleyClosure, params.N),
CLOSURE_FLOAT3_PARAM(AshikhminShirleyClosure, params.T),
CLOSURE_FLOAT_PARAM(AshikhminShirleyClosure, params.alpha_x),
CLOSURE_FLOAT_PARAM(AshikhminShirleyClosure, params.alpha_y),
BSDF_CLOSURE_CLASS_END(AshikhminShirley, ashikhmin_shirley_aniso)
BSDF_CLOSURE_CLASS_BEGIN(DiffuseToon, diffuse_toon, ToonBsdf, LABEL_DIFFUSE)
CLOSURE_FLOAT3_PARAM(DiffuseToonClosure, params.N),
CLOSURE_FLOAT_PARAM(DiffuseToonClosure, params.size),
CLOSURE_FLOAT_PARAM(DiffuseToonClosure, params.smooth),
BSDF_CLOSURE_CLASS_END(DiffuseToon, diffuse_toon)
BSDF_CLOSURE_CLASS_BEGIN(GlossyToon, glossy_toon, ToonBsdf, LABEL_GLOSSY)
CLOSURE_FLOAT3_PARAM(GlossyToonClosure, params.N),
CLOSURE_FLOAT_PARAM(GlossyToonClosure, params.size),
CLOSURE_FLOAT_PARAM(GlossyToonClosure, params.smooth),
BSDF_CLOSURE_CLASS_END(GlossyToon, glossy_toon)
BSDF_CLOSURE_CLASS_BEGIN(MicrofacetGGX,
microfacet_ggx,
MicrofacetBsdf,
LABEL_GLOSSY | LABEL_REFLECT)
CLOSURE_FLOAT3_PARAM(MicrofacetGGXClosure, params.N),
CLOSURE_FLOAT_PARAM(MicrofacetGGXClosure, params.alpha_x),
BSDF_CLOSURE_CLASS_END(MicrofacetGGX, microfacet_ggx)
BSDF_CLOSURE_CLASS_BEGIN(MicrofacetGGXAniso,
microfacet_ggx_aniso,
MicrofacetBsdf,
LABEL_GLOSSY | LABEL_REFLECT)
CLOSURE_FLOAT3_PARAM(MicrofacetGGXAnisoClosure, params.N),
CLOSURE_FLOAT3_PARAM(MicrofacetGGXAnisoClosure, params.T),
CLOSURE_FLOAT_PARAM(MicrofacetGGXAnisoClosure, params.alpha_x),
CLOSURE_FLOAT_PARAM(MicrofacetGGXAnisoClosure, params.alpha_y),
BSDF_CLOSURE_CLASS_END(MicrofacetGGXAniso, microfacet_ggx_aniso)
BSDF_CLOSURE_CLASS_BEGIN(MicrofacetBeckmann,
microfacet_beckmann,
MicrofacetBsdf,
LABEL_GLOSSY | LABEL_REFLECT)
CLOSURE_FLOAT3_PARAM(MicrofacetBeckmannClosure, params.N),
CLOSURE_FLOAT_PARAM(MicrofacetBeckmannClosure, params.alpha_x),
BSDF_CLOSURE_CLASS_END(MicrofacetBeckmann, microfacet_beckmann)
BSDF_CLOSURE_CLASS_BEGIN(MicrofacetBeckmannAniso,
microfacet_beckmann_aniso,
MicrofacetBsdf,
LABEL_GLOSSY | LABEL_REFLECT)
CLOSURE_FLOAT3_PARAM(MicrofacetBeckmannAnisoClosure, params.N),
CLOSURE_FLOAT3_PARAM(MicrofacetBeckmannAnisoClosure, params.T),
CLOSURE_FLOAT_PARAM(MicrofacetBeckmannAnisoClosure, params.alpha_x),
CLOSURE_FLOAT_PARAM(MicrofacetBeckmannAnisoClosure, params.alpha_y),
BSDF_CLOSURE_CLASS_END(MicrofacetBeckmannAniso, microfacet_beckmann_aniso)
BSDF_CLOSURE_CLASS_BEGIN(MicrofacetGGXRefraction,
microfacet_ggx_refraction,
MicrofacetBsdf,
LABEL_GLOSSY | LABEL_TRANSMIT)
CLOSURE_FLOAT3_PARAM(MicrofacetGGXRefractionClosure, params.N),
CLOSURE_FLOAT_PARAM(MicrofacetGGXRefractionClosure, params.alpha_x),
CLOSURE_FLOAT_PARAM(MicrofacetGGXRefractionClosure, params.ior),
BSDF_CLOSURE_CLASS_END(MicrofacetGGXRefraction, microfacet_ggx_refraction)
BSDF_CLOSURE_CLASS_BEGIN(MicrofacetBeckmannRefraction,
microfacet_beckmann_refraction,
MicrofacetBsdf,
LABEL_GLOSSY | LABEL_TRANSMIT)
CLOSURE_FLOAT3_PARAM(MicrofacetBeckmannRefractionClosure, params.N),
CLOSURE_FLOAT_PARAM(MicrofacetBeckmannRefractionClosure, params.alpha_x),
CLOSURE_FLOAT_PARAM(MicrofacetBeckmannRefractionClosure, params.ior),
BSDF_CLOSURE_CLASS_END(MicrofacetBeckmannRefraction, microfacet_beckmann_refraction)
BSDF_CLOSURE_CLASS_BEGIN(HairReflection, hair_reflection, HairBsdf, LABEL_GLOSSY)
CLOSURE_FLOAT3_PARAM(HairReflectionClosure, params.N),
CLOSURE_FLOAT_PARAM(HairReflectionClosure, params.roughness1),
CLOSURE_FLOAT_PARAM(HairReflectionClosure, params.roughness2),
CLOSURE_FLOAT3_PARAM(HairReflectionClosure, params.T),
CLOSURE_FLOAT_PARAM(HairReflectionClosure, params.offset),
BSDF_CLOSURE_CLASS_END(HairReflection, hair_reflection)
BSDF_CLOSURE_CLASS_BEGIN(HairTransmission, hair_transmission, HairBsdf, LABEL_GLOSSY)
CLOSURE_FLOAT3_PARAM(HairTransmissionClosure, params.N),
CLOSURE_FLOAT_PARAM(HairTransmissionClosure, params.roughness1),
CLOSURE_FLOAT_PARAM(HairTransmissionClosure, params.roughness2),
CLOSURE_FLOAT3_PARAM(HairReflectionClosure, params.T),
CLOSURE_FLOAT_PARAM(HairReflectionClosure, params.offset),
BSDF_CLOSURE_CLASS_END(HairTransmission, hair_transmission)
BSDF_CLOSURE_CLASS_BEGIN(PrincipledDiffuse,
principled_diffuse,
PrincipledDiffuseBsdf,
LABEL_DIFFUSE)
CLOSURE_FLOAT3_PARAM(PrincipledDiffuseClosure, params.N),
CLOSURE_FLOAT_PARAM(PrincipledDiffuseClosure, params.roughness),
BSDF_CLOSURE_CLASS_END(PrincipledDiffuse, principled_diffuse)
BSDF_CLOSURE_CLASS_BEGIN(PrincipledSheen,
principled_sheen,
PrincipledSheenBsdf,
LABEL_DIFFUSE)
CLOSURE_FLOAT3_PARAM(PrincipledSheenClosure, params.N),
BSDF_CLOSURE_CLASS_END(PrincipledSheen, principled_sheen)
/* PRINCIPLED HAIR BSDF */
class PrincipledHairClosure : public CBSDFClosure {
public:
PrincipledHairBSDF params;
PrincipledHairBSDF *alloc(ShaderData *sd, int path_flag, float3 weight)
{
PrincipledHairBSDF *bsdf = (PrincipledHairBSDF *)bsdf_alloc_osl(
sd, sizeof(PrincipledHairBSDF), weight, &params);
if (!bsdf) {
return NULL;
}
PrincipledHairExtra *extra = (PrincipledHairExtra *)closure_alloc_extra(
sd, sizeof(PrincipledHairExtra));
if (!extra) {
return NULL;
}
bsdf->extra = extra;
return bsdf;
}
void setup(ShaderData *sd, int path_flag, float3 weight)
{
if (!skip(sd, path_flag, LABEL_GLOSSY)) {
PrincipledHairBSDF *bsdf = (PrincipledHairBSDF *)alloc(sd, path_flag, weight);
if (!bsdf) {
return;
}
sd->flag |= (bsdf) ? bsdf_principled_hair_setup(sd, bsdf) : 0;
}
}
};
static ClosureParam *closure_bsdf_principled_hair_params()
{
static ClosureParam params[] = {CLOSURE_FLOAT3_PARAM(PrincipledHairClosure, params.N),
CLOSURE_FLOAT3_PARAM(PrincipledHairClosure, params.sigma),
CLOSURE_FLOAT_PARAM(PrincipledHairClosure, params.v),
CLOSURE_FLOAT_PARAM(PrincipledHairClosure, params.s),
CLOSURE_FLOAT_PARAM(PrincipledHairClosure, params.m0_roughness),
CLOSURE_FLOAT_PARAM(PrincipledHairClosure, params.alpha),
CLOSURE_FLOAT_PARAM(PrincipledHairClosure, params.eta),
CLOSURE_STRING_KEYPARAM(PrincipledHairClosure, label, "label"),
CLOSURE_FINISH_PARAM(PrincipledHairClosure)};
return params;
}
CCLOSURE_PREPARE(closure_bsdf_principled_hair_prepare, PrincipledHairClosure)
/* DISNEY PRINCIPLED CLEARCOAT */
class PrincipledClearcoatClosure : public CBSDFClosure {
public:
MicrofacetBsdf params;
float clearcoat, clearcoat_roughness;
MicrofacetBsdf *alloc(ShaderData *sd, int path_flag, float3 weight)
{
MicrofacetBsdf *bsdf = (MicrofacetBsdf *)bsdf_alloc_osl(
sd, sizeof(MicrofacetBsdf), weight, &params);
if (!bsdf) {
return NULL;
}
MicrofacetExtra *extra = (MicrofacetExtra *)closure_alloc_extra(sd, sizeof(MicrofacetExtra));
if (!extra) {
return NULL;
}
bsdf->T = make_float3(0.0f, 0.0f, 0.0f);
bsdf->extra = extra;
bsdf->ior = 1.5f;
bsdf->alpha_x = clearcoat_roughness;
bsdf->alpha_y = clearcoat_roughness;
bsdf->extra->color = make_float3(0.0f, 0.0f, 0.0f);
bsdf->extra->cspec0 = make_float3(0.04f, 0.04f, 0.04f);
bsdf->extra->clearcoat = clearcoat;
return bsdf;
}
void setup(ShaderData *sd, int path_flag, float3 weight)
{
MicrofacetBsdf *bsdf = alloc(sd, path_flag, weight);
if (!bsdf) {
return;
}
sd->flag |= bsdf_microfacet_ggx_clearcoat_setup(bsdf, sd);
}
};
ClosureParam *closure_bsdf_principled_clearcoat_params()
{
static ClosureParam params[] = {
CLOSURE_FLOAT3_PARAM(PrincipledClearcoatClosure, params.N),
CLOSURE_FLOAT_PARAM(PrincipledClearcoatClosure, clearcoat),
CLOSURE_FLOAT_PARAM(PrincipledClearcoatClosure, clearcoat_roughness),
CLOSURE_STRING_KEYPARAM(PrincipledClearcoatClosure, label, "label"),
CLOSURE_FINISH_PARAM(PrincipledClearcoatClosure)};
return params;
}
CCLOSURE_PREPARE(closure_bsdf_principled_clearcoat_prepare, PrincipledClearcoatClosure)
/* Registration */
static void register_closure(OSL::ShadingSystem *ss,
const char *name,
int id,
OSL::ClosureParam *params,
OSL::PrepareClosureFunc prepare)
{
/* optimization: it's possible to not use a prepare function at all and
* only initialize the actual class when accessing the closure component
* data, but then we need to map the id to the class somehow */
#if OSL_LIBRARY_VERSION_CODE >= 10900
ss->register_closure(name, id, params, prepare, NULL);
#else
ss->register_closure(name, id, params, prepare, NULL, 16);
#endif
}
void OSLShader::register_closures(OSLShadingSystem *ss_)
{
OSL::ShadingSystem *ss = (OSL::ShadingSystem *)ss_;
int id = 0;
register_closure(ss, "diffuse", id++, bsdf_diffuse_params(), bsdf_diffuse_prepare);
register_closure(ss, "oren_nayar", id++, bsdf_oren_nayar_params(), bsdf_oren_nayar_prepare);
register_closure(ss, "translucent", id++, bsdf_translucent_params(), bsdf_translucent_prepare);
register_closure(ss, "reflection", id++, bsdf_reflection_params(), bsdf_reflection_prepare);
register_closure(ss, "refraction", id++, bsdf_refraction_params(), bsdf_refraction_prepare);
register_closure(ss,
"transparent",
id++,
closure_bsdf_transparent_params(),
closure_bsdf_transparent_prepare);
register_closure(
ss, "microfacet_ggx", id++, bsdf_microfacet_ggx_params(), bsdf_microfacet_ggx_prepare);
register_closure(ss,
"microfacet_ggx_aniso",
id++,
bsdf_microfacet_ggx_aniso_params(),
bsdf_microfacet_ggx_aniso_prepare);
register_closure(ss,
"microfacet_ggx_refraction",
id++,
bsdf_microfacet_ggx_refraction_params(),
bsdf_microfacet_ggx_refraction_prepare);
register_closure(ss,
"microfacet_multi_ggx",
id++,
closure_bsdf_microfacet_multi_ggx_params(),
closure_bsdf_microfacet_multi_ggx_prepare);
register_closure(ss,
"microfacet_multi_ggx_glass",
id++,
closure_bsdf_microfacet_multi_ggx_glass_params(),
closure_bsdf_microfacet_multi_ggx_glass_prepare);
register_closure(ss,
"microfacet_multi_ggx_aniso",
id++,
closure_bsdf_microfacet_multi_ggx_aniso_params(),
closure_bsdf_microfacet_multi_ggx_aniso_prepare);
register_closure(ss,
"microfacet_ggx_fresnel",
id++,
closure_bsdf_microfacet_ggx_fresnel_params(),
closure_bsdf_microfacet_ggx_fresnel_prepare);
register_closure(ss,
"microfacet_ggx_aniso_fresnel",
id++,
closure_bsdf_microfacet_ggx_aniso_fresnel_params(),
closure_bsdf_microfacet_ggx_aniso_fresnel_prepare);
register_closure(ss,
"microfacet_multi_ggx_fresnel",
id++,
closure_bsdf_microfacet_multi_ggx_fresnel_params(),
closure_bsdf_microfacet_multi_ggx_fresnel_prepare);
register_closure(ss,
"microfacet_multi_ggx_glass_fresnel",
id++,
closure_bsdf_microfacet_multi_ggx_glass_fresnel_params(),
closure_bsdf_microfacet_multi_ggx_glass_fresnel_prepare);
register_closure(ss,
"microfacet_multi_ggx_aniso_fresnel",
id++,
closure_bsdf_microfacet_multi_ggx_aniso_fresnel_params(),
closure_bsdf_microfacet_multi_ggx_aniso_fresnel_prepare);
register_closure(ss,
"microfacet_beckmann",
id++,
bsdf_microfacet_beckmann_params(),
bsdf_microfacet_beckmann_prepare);
register_closure(ss,
"microfacet_beckmann_aniso",
id++,
bsdf_microfacet_beckmann_aniso_params(),
bsdf_microfacet_beckmann_aniso_prepare);
register_closure(ss,
"microfacet_beckmann_refraction",
id++,
bsdf_microfacet_beckmann_refraction_params(),
bsdf_microfacet_beckmann_refraction_prepare);
register_closure(ss,
"ashikhmin_shirley",
id++,
bsdf_ashikhmin_shirley_aniso_params(),
bsdf_ashikhmin_shirley_aniso_prepare);
register_closure(
ss, "ashikhmin_velvet", id++, bsdf_ashikhmin_velvet_params(), bsdf_ashikhmin_velvet_prepare);
register_closure(
ss, "diffuse_toon", id++, bsdf_diffuse_toon_params(), bsdf_diffuse_toon_prepare);
register_closure(ss, "glossy_toon", id++, bsdf_glossy_toon_params(), bsdf_glossy_toon_prepare);
register_closure(ss,
"principled_diffuse",
id++,
bsdf_principled_diffuse_params(),
bsdf_principled_diffuse_prepare);
register_closure(
ss, "principled_sheen", id++, bsdf_principled_sheen_params(), bsdf_principled_sheen_prepare);
register_closure(ss,
"principled_clearcoat",
id++,
closure_bsdf_principled_clearcoat_params(),
closure_bsdf_principled_clearcoat_prepare);
register_closure(ss, "emission", id++, closure_emission_params(), closure_emission_prepare);
register_closure(
ss, "background", id++, closure_background_params(), closure_background_prepare);
register_closure(ss, "holdout", id++, closure_holdout_params(), closure_holdout_prepare);
register_closure(ss,
"diffuse_ramp",
id++,
closure_bsdf_diffuse_ramp_params(),
closure_bsdf_diffuse_ramp_prepare);
register_closure(
ss, "phong_ramp", id++, closure_bsdf_phong_ramp_params(), closure_bsdf_phong_ramp_prepare);
register_closure(ss, "bssrdf", id++, closure_bssrdf_params(), closure_bssrdf_prepare);
register_closure(
ss, "hair_reflection", id++, bsdf_hair_reflection_params(), bsdf_hair_reflection_prepare);
register_closure(ss,
"hair_transmission",
id++,
bsdf_hair_transmission_params(),
bsdf_hair_transmission_prepare);
register_closure(ss,
"principled_hair",
id++,
closure_bsdf_principled_hair_params(),
closure_bsdf_principled_hair_prepare);
register_closure(ss,
"henyey_greenstein",
id++,
closure_henyey_greenstein_params(),
closure_henyey_greenstein_prepare);
register_closure(
ss, "absorption", id++, closure_absorption_params(), closure_absorption_prepare);
}
/* BSDF Closure */
bool CBSDFClosure::skip(const ShaderData *sd, int path_flag, int scattering)
{
/* caustic options */
if ((scattering & LABEL_GLOSSY) && (path_flag & PATH_RAY_DIFFUSE)) {
KernelGlobals *kg = sd->osl_globals;
if ((!kernel_data.integrator.caustics_reflective && (scattering & LABEL_REFLECT)) ||
(!kernel_data.integrator.caustics_refractive && (scattering & LABEL_TRANSMIT))) {
return true;
}
}
return false;
}
/* GGX closures with Fresnel */
class MicrofacetFresnelClosure : public CBSDFClosure {
public:
MicrofacetBsdf params;
float3 color;
float3 cspec0;
MicrofacetBsdf *alloc(ShaderData *sd, int path_flag, float3 weight)
{
/* Technically, the MultiGGX Glass closure may also transmit. However,
* since this is set statically and only used for caustic flags, this
* is probably as good as it gets. */
if (skip(sd, path_flag, LABEL_GLOSSY | LABEL_REFLECT)) {
return NULL;
}
MicrofacetBsdf *bsdf = (MicrofacetBsdf *)bsdf_alloc_osl(
sd, sizeof(MicrofacetBsdf), weight, &params);
if (!bsdf) {
return NULL;
}
MicrofacetExtra *extra = (MicrofacetExtra *)closure_alloc_extra(sd, sizeof(MicrofacetExtra));
if (!extra) {
return NULL;
}
bsdf->extra = extra;
bsdf->extra->color = color;
bsdf->extra->cspec0 = cspec0;
bsdf->extra->clearcoat = 0.0f;
return bsdf;
}
};
class MicrofacetGGXFresnelClosure : public MicrofacetFresnelClosure {
public:
void setup(ShaderData *sd, int path_flag, float3 weight)
{
MicrofacetBsdf *bsdf = alloc(sd, path_flag, weight);
if (!bsdf) {
return;
}
bsdf->T = make_float3(0.0f, 0.0f, 0.0f);
bsdf->alpha_y = bsdf->alpha_x;
sd->flag |= bsdf_microfacet_ggx_fresnel_setup(bsdf, sd);
}
};
ClosureParam *closure_bsdf_microfacet_ggx_fresnel_params()
{
static ClosureParam params[] = {
CLOSURE_FLOAT3_PARAM(MicrofacetGGXFresnelClosure, params.N),
CLOSURE_FLOAT_PARAM(MicrofacetGGXFresnelClosure, params.alpha_x),
CLOSURE_FLOAT_PARAM(MicrofacetGGXFresnelClosure, params.ior),
CLOSURE_FLOAT3_PARAM(MicrofacetGGXFresnelClosure, color),
CLOSURE_FLOAT3_PARAM(MicrofacetGGXFresnelClosure, cspec0),
CLOSURE_STRING_KEYPARAM(MicrofacetGGXFresnelClosure, label, "label"),
CLOSURE_FINISH_PARAM(MicrofacetGGXFresnelClosure)};
return params;
}
CCLOSURE_PREPARE(closure_bsdf_microfacet_ggx_fresnel_prepare, MicrofacetGGXFresnelClosure);
class MicrofacetGGXAnisoFresnelClosure : public MicrofacetFresnelClosure {
public:
void setup(ShaderData *sd, int path_flag, float3 weight)
{
MicrofacetBsdf *bsdf = alloc(sd, path_flag, weight);
if (!bsdf) {
return;
}
sd->flag |= bsdf_microfacet_ggx_aniso_fresnel_setup(bsdf, sd);
}
};
ClosureParam *closure_bsdf_microfacet_ggx_aniso_fresnel_params()
{
static ClosureParam params[] = {
CLOSURE_FLOAT3_PARAM(MicrofacetGGXFresnelClosure, params.N),
CLOSURE_FLOAT3_PARAM(MicrofacetGGXFresnelClosure, params.T),
CLOSURE_FLOAT_PARAM(MicrofacetGGXFresnelClosure, params.alpha_x),
CLOSURE_FLOAT_PARAM(MicrofacetGGXFresnelClosure, params.alpha_y),
CLOSURE_FLOAT_PARAM(MicrofacetGGXFresnelClosure, params.ior),
CLOSURE_FLOAT3_PARAM(MicrofacetGGXFresnelClosure, color),
CLOSURE_FLOAT3_PARAM(MicrofacetGGXFresnelClosure, cspec0),
CLOSURE_STRING_KEYPARAM(MicrofacetGGXFresnelClosure, label, "label"),
CLOSURE_FINISH_PARAM(MicrofacetGGXFresnelClosure)};
return params;
}
CCLOSURE_PREPARE(closure_bsdf_microfacet_ggx_aniso_fresnel_prepare,
MicrofacetGGXAnisoFresnelClosure);
/* Multiscattering GGX closures */
class MicrofacetMultiClosure : public CBSDFClosure {
public:
MicrofacetBsdf params;
float3 color;
MicrofacetBsdf *alloc(ShaderData *sd, int path_flag, float3 weight)
{
/* Technically, the MultiGGX closure may also transmit. However,
* since this is set statically and only used for caustic flags, this
* is probably as good as it gets. */
if (skip(sd, path_flag, LABEL_GLOSSY | LABEL_REFLECT)) {
return NULL;
}
MicrofacetBsdf *bsdf = (MicrofacetBsdf *)bsdf_alloc_osl(
sd, sizeof(MicrofacetBsdf), weight, &params);
if (!bsdf) {
return NULL;
}
MicrofacetExtra *extra = (MicrofacetExtra *)closure_alloc_extra(sd, sizeof(MicrofacetExtra));
if (!extra) {
return NULL;
}
bsdf->extra = extra;
bsdf->extra->color = color;
bsdf->extra->cspec0 = make_float3(0.0f, 0.0f, 0.0f);
bsdf->extra->clearcoat = 0.0f;
return bsdf;
}
};
class MicrofacetMultiGGXClosure : public MicrofacetMultiClosure {
public:
void setup(ShaderData *sd, int path_flag, float3 weight)
{
MicrofacetBsdf *bsdf = alloc(sd, path_flag, weight);
if (!bsdf) {
return;
}
bsdf->ior = 0.0f;
bsdf->T = make_float3(0.0f, 0.0f, 0.0f);
bsdf->alpha_y = bsdf->alpha_x;
sd->flag |= bsdf_microfacet_multi_ggx_setup(bsdf);
}
};
ClosureParam *closure_bsdf_microfacet_multi_ggx_params()
{
static ClosureParam params[] = {
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXClosure, params.N),
CLOSURE_FLOAT_PARAM(MicrofacetMultiGGXClosure, params.alpha_x),
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXClosure, color),
CLOSURE_STRING_KEYPARAM(MicrofacetMultiGGXClosure, label, "label"),
CLOSURE_FINISH_PARAM(MicrofacetMultiGGXClosure)};
return params;
}
CCLOSURE_PREPARE(closure_bsdf_microfacet_multi_ggx_prepare, MicrofacetMultiGGXClosure);
class MicrofacetMultiGGXAnisoClosure : public MicrofacetMultiClosure {
public:
void setup(ShaderData *sd, int path_flag, float3 weight)
{
MicrofacetBsdf *bsdf = alloc(sd, path_flag, weight);
if (!bsdf) {
return;
}
bsdf->ior = 0.0f;
sd->flag |= bsdf_microfacet_multi_ggx_aniso_setup(bsdf);
}
};
ClosureParam *closure_bsdf_microfacet_multi_ggx_aniso_params()
{
static ClosureParam params[] = {
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXClosure, params.N),
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXClosure, params.T),
CLOSURE_FLOAT_PARAM(MicrofacetMultiGGXClosure, params.alpha_x),
CLOSURE_FLOAT_PARAM(MicrofacetMultiGGXClosure, params.alpha_y),
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXClosure, color),
CLOSURE_STRING_KEYPARAM(MicrofacetMultiGGXClosure, label, "label"),
CLOSURE_FINISH_PARAM(MicrofacetMultiGGXClosure)};
return params;
}
CCLOSURE_PREPARE(closure_bsdf_microfacet_multi_ggx_aniso_prepare, MicrofacetMultiGGXAnisoClosure);
class MicrofacetMultiGGXGlassClosure : public MicrofacetMultiClosure {
public:
MicrofacetMultiGGXGlassClosure() : MicrofacetMultiClosure()
{
}
void setup(ShaderData *sd, int path_flag, float3 weight)
{
MicrofacetBsdf *bsdf = alloc(sd, path_flag, weight);
if (!bsdf) {
return;
}
bsdf->T = make_float3(0.0f, 0.0f, 0.0f);
bsdf->alpha_y = bsdf->alpha_x;
sd->flag |= bsdf_microfacet_multi_ggx_glass_setup(bsdf);
}
};
ClosureParam *closure_bsdf_microfacet_multi_ggx_glass_params()
{
static ClosureParam params[] = {
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXClosure, params.N),
CLOSURE_FLOAT_PARAM(MicrofacetMultiGGXClosure, params.alpha_x),
CLOSURE_FLOAT_PARAM(MicrofacetMultiGGXClosure, params.ior),
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXClosure, color),
CLOSURE_STRING_KEYPARAM(MicrofacetMultiGGXClosure, label, "label"),
CLOSURE_FINISH_PARAM(MicrofacetMultiGGXClosure)};
return params;
}
CCLOSURE_PREPARE(closure_bsdf_microfacet_multi_ggx_glass_prepare, MicrofacetMultiGGXGlassClosure);
/* Multiscattering GGX closures with Fresnel */
class MicrofacetMultiFresnelClosure : public CBSDFClosure {
public:
MicrofacetBsdf params;
float3 color;
float3 cspec0;
MicrofacetBsdf *alloc(ShaderData *sd, int path_flag, float3 weight)
{
/* Technically, the MultiGGX closure may also transmit. However,
* since this is set statically and only used for caustic flags, this
* is probably as good as it gets. */
if (skip(sd, path_flag, LABEL_GLOSSY | LABEL_REFLECT)) {
return NULL;
}
MicrofacetBsdf *bsdf = (MicrofacetBsdf *)bsdf_alloc_osl(
sd, sizeof(MicrofacetBsdf), weight, &params);
if (!bsdf) {
return NULL;
}
MicrofacetExtra *extra = (MicrofacetExtra *)closure_alloc_extra(sd, sizeof(MicrofacetExtra));
if (!extra) {
return NULL;
}
bsdf->extra = extra;
bsdf->extra->color = color;
bsdf->extra->cspec0 = cspec0;
bsdf->extra->clearcoat = 0.0f;
return bsdf;
}
};
class MicrofacetMultiGGXFresnelClosure : public MicrofacetMultiFresnelClosure {
public:
void setup(ShaderData *sd, int path_flag, float3 weight)
{
MicrofacetBsdf *bsdf = alloc(sd, path_flag, weight);
if (!bsdf) {
return;
}
bsdf->T = make_float3(0.0f, 0.0f, 0.0f);
bsdf->alpha_y = bsdf->alpha_x;
sd->flag |= bsdf_microfacet_multi_ggx_fresnel_setup(bsdf, sd);
}
};
ClosureParam *closure_bsdf_microfacet_multi_ggx_fresnel_params()
{
static ClosureParam params[] = {
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXFresnelClosure, params.N),
CLOSURE_FLOAT_PARAM(MicrofacetMultiGGXFresnelClosure, params.alpha_x),
CLOSURE_FLOAT_PARAM(MicrofacetMultiGGXFresnelClosure, params.ior),
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXFresnelClosure, color),
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXFresnelClosure, cspec0),
CLOSURE_STRING_KEYPARAM(MicrofacetMultiGGXFresnelClosure, label, "label"),
CLOSURE_FINISH_PARAM(MicrofacetMultiGGXFresnelClosure)};
return params;
}
CCLOSURE_PREPARE(closure_bsdf_microfacet_multi_ggx_fresnel_prepare,
MicrofacetMultiGGXFresnelClosure);
class MicrofacetMultiGGXAnisoFresnelClosure : public MicrofacetMultiFresnelClosure {
public:
void setup(ShaderData *sd, int path_flag, float3 weight)
{
MicrofacetBsdf *bsdf = alloc(sd, path_flag, weight);
if (!bsdf) {
return;
}
sd->flag |= bsdf_microfacet_multi_ggx_aniso_fresnel_setup(bsdf, sd);
}
};
ClosureParam *closure_bsdf_microfacet_multi_ggx_aniso_fresnel_params()
{
static ClosureParam params[] = {
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXFresnelClosure, params.N),
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXFresnelClosure, params.T),
CLOSURE_FLOAT_PARAM(MicrofacetMultiGGXFresnelClosure, params.alpha_x),
CLOSURE_FLOAT_PARAM(MicrofacetMultiGGXFresnelClosure, params.alpha_y),
CLOSURE_FLOAT_PARAM(MicrofacetMultiGGXFresnelClosure, params.ior),
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXFresnelClosure, color),
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXFresnelClosure, cspec0),
CLOSURE_STRING_KEYPARAM(MicrofacetMultiGGXFresnelClosure, label, "label"),
CLOSURE_FINISH_PARAM(MicrofacetMultiGGXFresnelClosure)};
return params;
}
CCLOSURE_PREPARE(closure_bsdf_microfacet_multi_ggx_aniso_fresnel_prepare,
MicrofacetMultiGGXAnisoFresnelClosure);
class MicrofacetMultiGGXGlassFresnelClosure : public MicrofacetMultiFresnelClosure {
public:
MicrofacetMultiGGXGlassFresnelClosure() : MicrofacetMultiFresnelClosure()
{
}
void setup(ShaderData *sd, int path_flag, float3 weight)
{
MicrofacetBsdf *bsdf = alloc(sd, path_flag, weight);
if (!bsdf) {
return;
}
bsdf->T = make_float3(0.0f, 0.0f, 0.0f);
bsdf->alpha_y = bsdf->alpha_x;
sd->flag |= bsdf_microfacet_multi_ggx_glass_fresnel_setup(bsdf, sd);
}
};
ClosureParam *closure_bsdf_microfacet_multi_ggx_glass_fresnel_params()
{
static ClosureParam params[] = {
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXFresnelClosure, params.N),
CLOSURE_FLOAT_PARAM(MicrofacetMultiGGXFresnelClosure, params.alpha_x),
CLOSURE_FLOAT_PARAM(MicrofacetMultiGGXFresnelClosure, params.ior),
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXFresnelClosure, color),
CLOSURE_FLOAT3_PARAM(MicrofacetMultiGGXFresnelClosure, cspec0),
CLOSURE_STRING_KEYPARAM(MicrofacetMultiGGXFresnelClosure, label, "label"),
CLOSURE_FINISH_PARAM(MicrofacetMultiGGXFresnelClosure)};
return params;
}
CCLOSURE_PREPARE(closure_bsdf_microfacet_multi_ggx_glass_fresnel_prepare,
MicrofacetMultiGGXGlassFresnelClosure);
/* Transparent */
class TransparentClosure : public CBSDFClosure {
public:
ShaderClosure params;
float3 unused;
void setup(ShaderData *sd, int path_flag, float3 weight)
{
bsdf_transparent_setup(sd, weight, path_flag);
}
};
ClosureParam *closure_bsdf_transparent_params()
{
static ClosureParam params[] = {CLOSURE_STRING_KEYPARAM(TransparentClosure, label, "label"),
CLOSURE_FINISH_PARAM(TransparentClosure)};
return params;
}
CCLOSURE_PREPARE(closure_bsdf_transparent_prepare, TransparentClosure)
/* Volume */
class VolumeAbsorptionClosure : public CBSDFClosure {
public:
void setup(ShaderData *sd, int path_flag, float3 weight)
{
volume_extinction_setup(sd, weight);
}
};
ClosureParam *closure_absorption_params()
{
static ClosureParam params[] = {CLOSURE_STRING_KEYPARAM(VolumeAbsorptionClosure, label, "label"),
CLOSURE_FINISH_PARAM(VolumeAbsorptionClosure)};
return params;
}
CCLOSURE_PREPARE(closure_absorption_prepare, VolumeAbsorptionClosure)
class VolumeHenyeyGreensteinClosure : public CBSDFClosure {
public:
HenyeyGreensteinVolume params;
void setup(ShaderData *sd, int path_flag, float3 weight)
{
volume_extinction_setup(sd, weight);
HenyeyGreensteinVolume *volume = (HenyeyGreensteinVolume *)bsdf_alloc_osl(
sd, sizeof(HenyeyGreensteinVolume), weight, &params);
if (!volume) {
return;
}
sd->flag |= volume_henyey_greenstein_setup(volume);
}
};
ClosureParam *closure_henyey_greenstein_params()
{
static ClosureParam params[] = {
CLOSURE_FLOAT_PARAM(VolumeHenyeyGreensteinClosure, params.g),
CLOSURE_STRING_KEYPARAM(VolumeHenyeyGreensteinClosure, label, "label"),
CLOSURE_FINISH_PARAM(VolumeHenyeyGreensteinClosure)};
return params;
}
CCLOSURE_PREPARE(closure_henyey_greenstein_prepare, VolumeHenyeyGreensteinClosure)
CCL_NAMESPACE_END