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godotengine
GitHub Repository: godotengine/godot
 Path: blob/master/thirdparty/embree/kernels/geometry/instance_intersector.h
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// Copyright 2009-2021 Intel Corporation

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// SPDX-License-Identifier: Apache-2.0

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#pragma once

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#include "instance.h"

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#include "../common/ray.h"

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#include "../common/point_query.h"

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namespace embree

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{

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  namespace isa

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  {

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    struct InstanceIntersector1

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    {

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      typedef InstancePrimitive Primitive;

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      struct Precalculations {

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        __forceinline Precalculations (const Ray& ray, const void *ptr) {}

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      };

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      static void intersect(const Precalculations& pre, RayHit& ray, RayQueryContext* context, const Primitive& prim);

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      static bool occluded(const Precalculations& pre, Ray& ray, RayQueryContext* context, const Primitive& prim);

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      static bool pointQuery(PointQuery* query, PointQueryContext* context, const Primitive& prim);

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    };

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    struct InstanceIntersector1MB

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    {

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      typedef InstancePrimitive Primitive;

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      struct Precalculations {

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        __forceinline Precalculations (const Ray& ray, const void *ptr) {}

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      };

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      static void intersect(const Precalculations& pre, RayHit& ray, RayQueryContext* context, const Primitive& prim);

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      static bool occluded(const Precalculations& pre, Ray& ray, RayQueryContext* context, const Primitive& prim);

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      static bool pointQuery(PointQuery* query, PointQueryContext* context, const Primitive& prim);

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    };

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    template<int K>

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      struct InstanceIntersectorK

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    {

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      typedef InstancePrimitive Primitive;

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      struct Precalculations {

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        __forceinline Precalculations (const vbool<K>& valid, const RayK<K>& ray) {}

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      };

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      static void intersect(const vbool<K>& valid_i, const Precalculations& pre, RayHitK<K>& ray, RayQueryContext* context, const Primitive& prim);

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      static vbool<K> occluded(const vbool<K>& valid_i, const Precalculations& pre, RayK<K>& ray, RayQueryContext* context, const Primitive& prim);

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      static __forceinline void intersect(Precalculations& pre, RayHitK<K>& ray, size_t k, RayQueryContext* context, const Primitive& prim) {

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        intersect(vbool<K>(1<<int(k)),pre,ray,context,prim);

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      }

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      static __forceinline bool occluded(Precalculations& pre, RayK<K>& ray, size_t k, RayQueryContext* context, const Primitive& prim) {

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        occluded(vbool<K>(1<<int(k)),pre,ray,context,prim);

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        return ray.tfar[k] < 0.0f; 

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      }

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    };

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    template<int K>

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      struct InstanceIntersectorKMB

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    {

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      typedef InstancePrimitive Primitive;

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      struct Precalculations {

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        __forceinline Precalculations (const vbool<K>& valid, const RayK<K>& ray) {}

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      };

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      static void intersect(const vbool<K>& valid_i, const Precalculations& pre, RayHitK<K>& ray, RayQueryContext* context, const Primitive& prim);

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      static vbool<K> occluded(const vbool<K>& valid_i, const Precalculations& pre, RayK<K>& ray, RayQueryContext* context, const Primitive& prim);

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      static __forceinline void intersect(Precalculations& pre, RayHitK<K>& ray, size_t k, RayQueryContext* context, const Primitive& prim) {

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        intersect(vbool<K>(1<<int(k)),pre,ray,context,prim);

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      }

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      static __forceinline bool occluded(Precalculations& pre, RayK<K>& ray, size_t k, RayQueryContext* context, const Primitive& prim) {

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        occluded(vbool<K>(1<<int(k)),pre,ray,context,prim);

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        return ray.tfar[k] < 0.0f; 

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      }

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    };

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  }

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}

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