50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
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// Copyright 2009-2020 Intel Corporation
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include "../common/ray.h"
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#include "../common/geometry.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 CurvePrecalculations1
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{
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float depth_scale;
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LinearSpace3fa ray_space;
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__forceinline CurvePrecalculations1() {}
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__forceinline CurvePrecalculations1(const Ray& ray, const void* ptr)
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{
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depth_scale = rsqrt(dot(ray.dir,ray.dir));
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LinearSpace3fa space = frame(depth_scale*ray.dir);
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space.vz *= depth_scale;
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ray_space = space.transposed();
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}
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};
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template<int K>
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struct CurvePrecalculationsK
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{
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vfloat<K> depth_scale;
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LinearSpace3fa ray_space[K];
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__forceinline CurvePrecalculationsK(const vbool<K>& valid, const RayK<K>& ray)
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{
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size_t mask = movemask(valid);
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depth_scale = rsqrt(dot(ray.dir,ray.dir));
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while (mask) {
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size_t k = bscf(mask);
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Vec3fa ray_dir_k = Vec3fa(ray.dir.x[k],ray.dir.y[k],ray.dir.z[k]);
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LinearSpace3fa ray_space_k = frame(depth_scale[k]*ray_dir_k);
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ray_space_k.vz *= depth_scale[k];
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ray_space[k] = ray_space_k.transposed();
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}
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}
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};
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}
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}
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