Merge pull request #48050 from JFonS/occlusion_culling

1 files changed, 181 insertions, 0 deletions

diff --git a/thirdparty/embree-aarch64/kernels/geometry/quadv_intersector.h b/thirdparty/embree-aarch64/kernels/geometry/quadv_intersector.h
new file mode 100644
index 0000000000..30a24b291a
--- /dev/null
+++ b/thirdparty/embree-aarch64/kernels/geometry/quadv_intersector.h
@@ -0,0 +1,181 @@
+// Copyright 2009-2020 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include "quadv.h"
+#include "quad_intersector_moeller.h"
+#include "quad_intersector_pluecker.h"
+
+namespace embree
+{
+  namespace isa
+  {
+    /*! Intersects M quads with 1 ray */
+    template<int M, bool filter>
+    struct QuadMvIntersector1Moeller
+    {
+      typedef QuadMv<M> Primitive;
+      typedef QuadMIntersector1MoellerTrumbore<M,filter> Precalculations;
+        
+      /*! Intersect a ray with the M quads and updates the hit. */
+      static __forceinline void intersect(const Precalculations& pre, RayHit& ray, IntersectContext* context, const Primitive& quad)
+      {
+        STAT3(normal.trav_prims,1,1,1);
+        pre.intersect(ray,context,quad.v0,quad.v1,quad.v2,quad.v3,quad.geomID(),quad.primID());
+      }
+        
+      /*! Test if the ray is occluded by one of M quads. */
+      static __forceinline bool occluded(const Precalculations& pre, Ray& ray, IntersectContext* context, const Primitive& quad)
+      {
+        STAT3(shadow.trav_prims,1,1,1);
+        return pre.occluded(ray,context, quad.v0,quad.v1,quad.v2,quad.v3,quad.geomID(),quad.primID());
+      }
+      
+      static __forceinline bool pointQuery(PointQuery* query, PointQueryContext* context, const Primitive& quad)
+      {
+        return PrimitivePointQuery1<Primitive>::pointQuery(query, context, quad);
+      }
+    };
+
+    /*! Intersects M triangles with K rays. */
+    template<int M, int K, bool filter>
+    struct QuadMvIntersectorKMoeller
+    {
+      typedef QuadMv<M> Primitive;
+      typedef QuadMIntersectorKMoellerTrumbore<M,K,filter> Precalculations;
+
+      /*! Intersects K rays with M triangles. */
+      static __forceinline void intersect(const vbool<K>& valid_i, Precalculations& pre, RayHitK<K>& ray, IntersectContext* context, const QuadMv<M>& quad)
+      {
+        for (size_t i=0; i<QuadMv<M>::max_size(); i++)
+        {
+          if (!quad.valid(i)) break;
+          STAT3(normal.trav_prims,1,popcnt(valid_i),K);
+          const Vec3vf<K> p0 = broadcast<vfloat<K>>(quad.v0,i);
+          const Vec3vf<K> p1 = broadcast<vfloat<K>>(quad.v1,i);
+          const Vec3vf<K> p2 = broadcast<vfloat<K>>(quad.v2,i);
+          const Vec3vf<K> p3 = broadcast<vfloat<K>>(quad.v3,i);
+          pre.intersectK(valid_i,ray,p0,p1,p2,p3,IntersectKEpilogM<M,K,filter>(ray,context,quad.geomID(),quad.primID(),i));
+        }
+      }
+
+      /*! Test for K rays if they are occluded by any of the M triangles. */
+      static __forceinline vbool<K> occluded(const vbool<K>& valid_i, Precalculations& pre, RayK<K>& ray, IntersectContext* context, const QuadMv<M>& quad)
+      {
+        vbool<K> valid0 = valid_i;
+
+        for (size_t i=0; i<QuadMv<M>::max_size(); i++)
+        {
+          if (!quad.valid(i)) break;
+          STAT3(shadow.trav_prims,1,popcnt(valid0),K);
+          const Vec3vf<K> p0 = broadcast<vfloat<K>>(quad.v0,i);
+          const Vec3vf<K> p1 = broadcast<vfloat<K>>(quad.v1,i);
+          const Vec3vf<K> p2 = broadcast<vfloat<K>>(quad.v2,i);
+          const Vec3vf<K> p3 = broadcast<vfloat<K>>(quad.v3,i);
+          if (pre.intersectK(valid0,ray,p0,p1,p2,p3,OccludedKEpilogM<M,K,filter>(valid0,ray,context,quad.geomID(),quad.primID(),i)))
+            break;
+        }
+        return !valid0;
+      }
+      
+      /*! Intersect a ray with M triangles and updates the hit. */
+      static __forceinline void intersect(Precalculations& pre, RayHitK<K>& ray, size_t k, IntersectContext* context, const QuadMv<M>& quad)
+      {
+        STAT3(normal.trav_prims,1,1,1);
+        pre.intersect1(ray,k,context,quad.v0,quad.v1,quad.v2,quad.v3,quad.geomID(),quad.primID());
+      }
+
+      /*! Test if the ray is occluded by one of the M triangles. */
+      static __forceinline bool occluded(Precalculations& pre, RayK<K>& ray, size_t k, IntersectContext* context, const QuadMv<M>& quad)
+      {
+        STAT3(shadow.trav_prims,1,1,1);
+        return pre.occluded1(ray,k,context,quad.v0,quad.v1,quad.v2,quad.v3,quad.geomID(),quad.primID());
+      }
+    };
+
+    /*! Intersects M quads with 1 ray */
+    template<int M, bool filter>
+    struct QuadMvIntersector1Pluecker
+    {
+      typedef QuadMv<M> Primitive;
+      typedef QuadMIntersector1Pluecker<M,filter> Precalculations;
+        
+      /*! Intersect a ray with the M quads and updates the hit. */
+      static __forceinline void intersect(const Precalculations& pre, RayHit& ray, IntersectContext* context, const Primitive& quad)
+      {
+        STAT3(normal.trav_prims,1,1,1);
+        pre.intersect(ray,context,quad.v0,quad.v1,quad.v2,quad.v3,quad.geomID(),quad.primID());
+      }
+        
+      /*! Test if the ray is occluded by one of M quads. */
+      static __forceinline bool occluded(const Precalculations& pre, Ray& ray, IntersectContext* context, const Primitive& quad)
+      {
+        STAT3(shadow.trav_prims,1,1,1);
+        return pre.occluded(ray,context, quad.v0,quad.v1,quad.v2,quad.v3,quad.geomID(),quad.primID());
+      }
+      
+      static __forceinline bool pointQuery(PointQuery* query, PointQueryContext* context, const Primitive& quad)
+      {
+        return PrimitivePointQuery1<Primitive>::pointQuery(query, context, quad);
+      }
+    };
+
+    /*! Intersects M triangles with K rays. */
+    template<int M, int K, bool filter>
+    struct QuadMvIntersectorKPluecker
+    {
+      typedef QuadMv<M> Primitive;
+      typedef QuadMIntersectorKPluecker<M,K,filter> Precalculations;
+
+      /*! Intersects K rays with M triangles. */
+      static __forceinline void intersect(const vbool<K>& valid_i, Precalculations& pre, RayHitK<K>& ray, IntersectContext* context, const QuadMv<M>& quad)
+      {
+        for (size_t i=0; i<QuadMv<M>::max_size(); i++)
+        {
+          if (!quad.valid(i)) break;
+          STAT3(normal.trav_prims,1,popcnt(valid_i),K);
+          const Vec3vf<K> p0 = broadcast<vfloat<K>>(quad.v0,i);
+          const Vec3vf<K> p1 = broadcast<vfloat<K>>(quad.v1,i);
+          const Vec3vf<K> p2 = broadcast<vfloat<K>>(quad.v2,i);
+          const Vec3vf<K> p3 = broadcast<vfloat<K>>(quad.v3,i);
+          pre.intersectK(valid_i,ray,p0,p1,p2,p3,IntersectKEpilogM<M,K,filter>(ray,context,quad.geomID(),quad.primID(),i));
+        }
+      }
+
+      /*! Test for K rays if they are occluded by any of the M triangles. */
+      static __forceinline vbool<K> occluded(const vbool<K>& valid_i, Precalculations& pre, RayK<K>& ray, IntersectContext* context, const QuadMv<M>& quad)
+      {
+        vbool<K> valid0 = valid_i;
+
+        for (size_t i=0; i<QuadMv<M>::max_size(); i++)
+        {
+          if (!quad.valid(i)) break;
+          STAT3(shadow.trav_prims,1,popcnt(valid0),K);
+          const Vec3vf<K> p0 = broadcast<vfloat<K>>(quad.v0,i);
+          const Vec3vf<K> p1 = broadcast<vfloat<K>>(quad.v1,i);
+          const Vec3vf<K> p2 = broadcast<vfloat<K>>(quad.v2,i);
+          const Vec3vf<K> p3 = broadcast<vfloat<K>>(quad.v3,i);
+          if (pre.intersectK(valid0,ray,p0,p1,p2,p3,OccludedKEpilogM<M,K,filter>(valid0,ray,context,quad.geomID(),quad.primID(),i)))
+            break;
+        }
+        return !valid0;
+      }
+      
+      /*! Intersect a ray with M triangles and updates the hit. */
+      static __forceinline void intersect(Precalculations& pre, RayHitK<K>& ray, size_t k, IntersectContext* context, const QuadMv<M>& quad)
+      {
+        STAT3(normal.trav_prims,1,1,1);
+        pre.intersect1(ray,k,context,quad.v0,quad.v1,quad.v2,quad.v3,quad.geomID(),quad.primID());
+      }
+
+      /*! Test if the ray is occluded by one of the M triangles. */
+      static __forceinline bool occluded(Precalculations& pre, RayK<K>& ray, size_t k, IntersectContext* context, const QuadMv<M>& quad)
+      {
+        STAT3(shadow.trav_prims,1,1,1);
+        return pre.occluded1(ray,k,context,quad.v0,quad.v1,quad.v2,quad.v3,quad.geomID(),quad.primID());
+      }
+    };
+  }
+}
+