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// Copyright 2022 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "LightShared.h"
#ifdef __cplusplus
namespace ispc {
#endif // __cplusplus
struct Texture2D;
struct Distribution2D;
struct HDRILight
{
Light super;
linear3f light2world;
linear3f world2light;
const Texture2D *map; // Environment map in latitude / longitude format
const Distribution2D
*distribution; // The 2D distribution used to importance sample
vec2f rcpSize; // precomputed 1/map.size
vec3f radianceScale; // scaling factor of emitted RGB radiance
#ifdef __cplusplus
HDRILight()
: light2world(one),
world2light(one),
map(nullptr),
distribution(nullptr),
rcpSize(0.f),
radianceScale(1.f)
{
super.type = LIGHT_TYPE_HDRI;
}
void set(bool isVisible,
const Instance *instance,
const vec3f &radianceScale,
const linear3f &light2world,
const Texture2D *map,
const Distribution2D *distribution);
};
} // namespace ispc
#else
};
#endif // __cplusplus
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