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// Copyright 2009 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#include "Mix.ih"
#include "common/FeatureFlags.ih"
#include "render/Material.ih"
#include "render/MaterialDispatch.ih"
#include "render/bsdfs/MultiBSDF.ih"
#include "texture/TextureParam.ih"
// c++ shared
#include "MixShared.h"
///////////////////////////////////////////////////////////////////////////////
// Implementation
#ifndef OSPRAY_TARGET_SYCL
OSPRAY_BEGIN_ISPC_NAMESPACE
#define MULTIBSDF_SIZE 2
struct Mix_BSDF
{
DEFINE_MULTIBSDF(MULTIBSDF_SIZE);
const varying BSDF *uniform bsdf1;
const varying BSDF *uniform bsdf2;
};
SYCL_EXTERNAL const varying BSDF *uniform Mix_getBSDF(
const uniform Material *uniform super,
uniform ShadingContext *uniform ctx,
const DifferentialGeometry &dg,
const Ray &ray,
const Medium ¤tMedium,
const uniform FeatureFlagsHandler &ffh)
{
const Mix *uniform self = (const Mix *uniform)super;
// Allocate memory and initialize material BSDF
varying Mix_BSDF *uniform bsdf =
(varying Mix_BSDF * uniform) ShadingContext_alloc(ctx, sizeof(Mix_BSDF));
varying MultiBSDF *uniform mbsdf = (varying MultiBSDF * uniform) bsdf;
MultiBSDF_Constructor(mbsdf, MULTIBSDF_SIZE);
bsdf->super.bsdfType = BSDF_TYPE_MIX;
bsdf->bsdf1 = NULL;
bsdf->bsdf2 = NULL;
float factor = self->factor * clamp(get1f(self->factorMap, dg, 1.f));
if (self->mat1) {
bsdf->bsdf1 =
self->mat1->getBSDF(self->mat1, ctx, dg, ray, currentMedium, ffh);
if (bsdf->bsdf1)
MultiBSDF_add(mbsdf, 0, bsdf->bsdf1, 1.0f - factor, 1.0f - factor);
}
if (self->mat2) {
bsdf->bsdf2 =
self->mat2->getBSDF(self->mat2, ctx, dg, ray, currentMedium, ffh);
if (bsdf->bsdf2)
MultiBSDF_add(mbsdf, 1, bsdf->bsdf2, factor, factor);
}
return &bsdf->super;
}
SYCL_EXTERNAL vec3f Mix_getTransparency(const uniform Material *uniform super,
const DifferentialGeometry &dg,
const Ray &ray,
const Medium ¤tMedium,
const uniform FeatureFlagsHandler &ffh)
{
const Mix *uniform self = (const Mix *uniform)super;
vec3f t1 = make_vec3f(0.f);
if (self->mat1)
t1 = self->mat1->getTransparency(self->mat1, dg, ray, currentMedium, ffh);
vec3f t2 = make_vec3f(0.f);
if (self->mat2)
t2 = self->mat2->getTransparency(self->mat2, dg, ray, currentMedium, ffh);
float factor = self->factor * clamp(get1f(self->factorMap, dg, 1.f));
return lerp(factor, t1, t2);
}
SYCL_EXTERNAL vec3f Mix_getEmission(const Material *uniform super,
const varying DifferentialGeometry &dg,
const uniform FeatureFlagsHandler &ffh)
{
const Mix *uniform self = (const Mix *uniform)super;
vec3f t1 = make_vec3f(0.f);
if (self->mat1)
t1 = self->mat1->getEmission(self->mat1, dg, ffh);
vec3f t2 = make_vec3f(0.f);
if (self->mat2)
t2 = self->mat2->getEmission(self->mat2, dg, ffh);
float factor = self->factor * clamp(get1f(self->factorMap, dg, 1.f));
return lerp(factor, t1, t2);
}
inline BSDF_EvalRes BSDF_dispatch_eval(
const varying BSDF *uniform self, const vec3f &wo, const vec3f &wi)
{
uniform FeatureFlagsHandler ffh;
return BSDF_dispatch_eval(self, wo, wi, ffh);
}
inline BSDF_SampleRes BSDF_dispatch_sample(
const varying BSDF *uniform self, const vec3f &wo, const vec2f &s, float ss)
{
uniform FeatureFlagsHandler ffh;
return BSDF_dispatch_sample(self, wo, s, ss, ffh);
}
SYCL_EXTERNAL BSDF_EvalRes Mix_BSDF_eval(
const varying BSDF *uniform super, const vec3f &wo, const vec3f &wi)
{
const varying Mix_BSDF *uniform self = (const varying Mix_BSDF *uniform)super;
MULTIBSDF_EVAL_BEGIN();
MULTIBSDF_EVAL_CHILD(0, self->bsdf1, BSDF_dispatch_eval);
MULTIBSDF_EVAL_CHILD(1, self->bsdf2, BSDF_dispatch_eval);
MULTIBSDF_EVAL_END();
return MULTIBSDF_EVAL_GET();
}
SYCL_EXTERNAL BSDF_SampleRes Mix_BSDF_sample(const varying BSDF *uniform super,
const vec3f &wo,
const vec2f &s,
float ss)
{
const varying Mix_BSDF *uniform self = (const varying Mix_BSDF *uniform)super;
MULTIBSDF_SAMPLE_BEGIN();
MULTIBSDF_SAMPLE_CHILD(0, self->bsdf1, BSDF_dispatch_sample);
MULTIBSDF_SAMPLE_CHILD(1, self->bsdf2, BSDF_dispatch_sample);
MULTIBSDF_SAMPLE_EVAL();
MULTIBSDF_EVAL_CHILD(0, self->bsdf1, BSDF_dispatch_eval);
MULTIBSDF_EVAL_CHILD(1, self->bsdf2, BSDF_dispatch_eval);
MULTIBSDF_SAMPLE_END();
return MULTIBSDF_SAMPLE_GET();
}
///////////////////////////////////////////////////////////////////////////////
// External API
export void *uniform Mix_getBSDF_addr()
{
return (void *uniform)Mix_getBSDF;
}
export void *uniform Mix_getTransparency_addr()
{
return (void *uniform)Mix_getTransparency;
}
export void *uniform Mix_getEmission_addr()
{
return (void *uniform)Mix_getEmission;
}
OSPRAY_END_ISPC_NAMESPACE
#endif
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