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// Copyright 2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "texture/TextureParamShared.h"
#define EPS 1e-5f
#include "bsdfs/MicrofacetAlbedoTablesShared.h"
#ifdef __cplusplus
namespace ispc {
#endif // __cplusplus
#if defined(__cplusplus) && !defined(OSPRAY_TARGET_SYCL)
typedef void *Material_GetBSDFFunc;
typedef void *Material_GetTransparencyFunc;
typedef void *Material_SelectNextMediumFunc;
typedef void *Material_GetEmissionFunc;
#else
struct BSDF;
struct ShadingContext;
struct Medium;
struct DifferentialGeometry;
struct Ray;
struct Material;
struct FeatureFlagsHandler;
typedef const varying BSDF *uniform (*Material_GetBSDFFunc)(
const uniform Material *uniform self,
uniform ShadingContext *uniform ctx,
// The point to shade on a surface.
const DifferentialGeometry &dg,
// The ray arriving at the point to shade.
const Ray &ray,
// The medium this ray travels inside.
const Medium ¤tMedium,
const uniform FeatureFlagsHandler &ffh);
// shortcut: compute transmission of material, for transparent shadows,
// neglecting refraction
typedef vec3f (*Material_GetTransparencyFunc)(
const uniform Material *uniform self,
// The point to shade on a surface.
const DifferentialGeometry &dg,
// The ray arriving at the point to shade.
const Ray &ray,
// The medium this ray travels inside.
const Medium ¤tMedium,
const uniform FeatureFlagsHandler &ffh);
typedef void (*Material_SelectNextMediumFunc)(
const uniform Material *uniform self,
const DifferentialGeometry &dg,
Medium ¤tMedium);
typedef vec3f (*Material_GetEmissionFunc)(const Material *uniform self,
// The point to shade on a surface.
const varying DifferentialGeometry &dg,
const uniform FeatureFlagsHandler &ffh);
#endif
enum MaterialType
{
MATERIAL_TYPE_ALLOY = 0,
MATERIAL_TYPE_CARPAINT = 1,
MATERIAL_TYPE_GLASS = 2,
MATERIAL_TYPE_LUMINOUS = 3,
MATERIAL_TYPE_METAL = 4,
MATERIAL_TYPE_METALLICPAINT = 5,
MATERIAL_TYPE_MIX = 6,
MATERIAL_TYPE_OBJ = 7,
MATERIAL_TYPE_PLASTIC = 8,
MATERIAL_TYPE_PRINCIPLED = 9,
MATERIAL_TYPE_THINGLASS = 10,
MATERIAL_TYPE_VELVET = 11,
MATERIAL_TYPE_UNKNOWN = 12
};
// ISPC-side abstraction for a material.
struct Material
{
MaterialType type;
Material_GetBSDFFunc getBSDF;
Material_GetTransparencyFunc getTransparency;
Material_SelectNextMediumFunc selectNextMedium;
Material_GetEmissionFunc getEmission;
bool isEmissive;
MicrofacetAlbedoTables *microfacetAlbedoTables;
#ifdef __cplusplus
Material()
: type(MATERIAL_TYPE_UNKNOWN),
getBSDF(nullptr),
getTransparency(nullptr),
selectNextMedium(nullptr),
getEmission(nullptr),
isEmissive(false),
microfacetAlbedoTables(nullptr)
{}
};
} // namespace ispc
#else
};
#endif // __cplusplus
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