File: Principled.ih

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// Copyright 2022 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#pragma once

#include "render/bsdfs/BSDF.ih"
#include "rkcommon/math/vec.ih"

OSPRAY_BEGIN_ISPC_NAMESPACE

struct Material;
struct ShadingContext;
struct DifferentialGeometry;
struct Ray;
struct Medium;

SYCL_EXTERNAL const varying BSDF *uniform Principled_getBSDF(
    const uniform Material *uniform super,
    uniform ShadingContext *uniform ctx,
    const DifferentialGeometry &dg,
    const Ray &ray,
    const Medium &currentMedium,
    const uniform FeatureFlagsHandler &ffh);

SYCL_EXTERNAL vec3f Principled_getTransparency(
    const uniform Material *uniform super,
    const DifferentialGeometry &dg,
    const Ray &ray,
    const Medium &currentMedium,
    const uniform FeatureFlagsHandler &ffh);

SYCL_EXTERNAL void Principled_selectNextMedium(
    const uniform Material *uniform super,
    const DifferentialGeometry &dg,
    Medium &currentMedium);

SYCL_EXTERNAL BSDF_EvalRes Principled_BSDF_eval(
    const varying BSDF *uniform super, const vec3f &wo, const vec3f &wi);

SYCL_EXTERNAL BSDF_SampleRes Principled_BSDF_sample(
    const varying BSDF *uniform super,
    const vec3f &wo,
    const vec2f &s,
    float ss);

SYCL_EXTERNAL vec3f Principled_getEmission(const Material *uniform super,
    const varying DifferentialGeometry &dg,
    const uniform FeatureFlagsHandler &ffh);

OSPRAY_END_ISPC_NAMESPACE