59 lines
2.4 KiB
C++
59 lines
2.4 KiB
C++
// 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 "bvh.h"
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#include "../common/ray.h"
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#include "../common/stack_item.h"
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#include "node_intersector_frustum.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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template<int K, bool robust>
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struct TravRayK;
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/*! BVH hybrid packet intersector. Switches between packet and single ray traversal (optional). */
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template<int N, int K, int types, bool robust, typename PrimitiveIntersectorK, bool single = true>
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class BVHNIntersectorKHybrid
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{
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/* shortcuts for frequently used types */
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typedef typename PrimitiveIntersectorK::Precalculations Precalculations;
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typedef typename PrimitiveIntersectorK::Primitive Primitive;
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typedef BVHN<N> BVH;
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typedef typename BVH::NodeRef NodeRef;
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typedef typename BVH::BaseNode BaseNode;
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typedef typename BVH::AABBNode AABBNode;
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static const size_t stackSizeSingle = 1+(N-1)*BVH::maxDepth+3; // +3 due to 16-wide store
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static const size_t stackSizeChunk = 1+(N-1)*BVH::maxDepth;
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static const size_t switchThresholdIncoherent = \
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(K==4) ? 3 :
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(K==8) ? ((N==4) ? 5 : 7) :
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(K==16) ? 14 : // 14 seems to work best for KNL due to better ordered chunk traversal
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0;
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private:
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static void intersect1(Accel::Intersectors* This, const BVH* bvh, NodeRef root, size_t k, Precalculations& pre,
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RayHitK<K>& ray, const TravRayK<K, robust>& tray, IntersectContext* context);
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static bool occluded1(Accel::Intersectors* This, const BVH* bvh, NodeRef root, size_t k, Precalculations& pre,
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RayK<K>& ray, const TravRayK<K, robust>& tray, IntersectContext* context);
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public:
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static void intersect(vint<K>* valid, Accel::Intersectors* This, RayHitK<K>& ray, IntersectContext* context);
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static void occluded (vint<K>* valid, Accel::Intersectors* This, RayK<K>& ray, IntersectContext* context);
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static void intersectCoherent(vint<K>* valid, Accel::Intersectors* This, RayHitK<K>& ray, IntersectContext* context);
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static void occludedCoherent (vint<K>* valid, Accel::Intersectors* This, RayK<K>& ray, IntersectContext* context);
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};
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/*! BVH packet intersector. */
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template<int N, int K, int types, bool robust, typename PrimitiveIntersectorK>
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class BVHNIntersectorKChunk : public BVHNIntersectorKHybrid<N, K, types, robust, PrimitiveIntersectorK, false> {};
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}
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}
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