| 1 | // Copyright 2009-2021 Intel Corporation |
|---|---|
| 2 | // SPDX-License-Identifier: Apache-2.0 |
| 3 | |
| 4 | #pragma once |
| 5 | |
| 6 | #include "../common/ray.h" |
| 7 | #include "../common/geometry.h" |
| 8 | |
| 9 | namespace embree |
| 10 | { |
| 11 | namespace isa |
| 12 | { |
| 13 | struct CurvePrecalculations1 |
| 14 | { |
| 15 | float depth_scale; |
| 16 | LinearSpace3fa ray_space; |
| 17 | |
| 18 | __forceinline CurvePrecalculations1() {} |
| 19 | |
| 20 | __forceinline CurvePrecalculations1(const Ray& ray, const void* ptr) |
| 21 | { |
| 22 | depth_scale = rsqrt(x: dot(a: ray.dir,b: ray.dir)); |
| 23 | LinearSpace3fa space = frame(N: depth_scale*ray.dir); |
| 24 | space.vz *= depth_scale; |
| 25 | ray_space = space.transposed(); |
| 26 | } |
| 27 | }; |
| 28 | |
| 29 | template<int K> |
| 30 | struct CurvePrecalculationsK |
| 31 | { |
| 32 | vfloat<K> depth_scale; |
| 33 | LinearSpace3fa ray_space[K]; |
| 34 | |
| 35 | __forceinline CurvePrecalculationsK(const vbool<K>& valid, const RayK<K>& ray) |
| 36 | { |
| 37 | size_t mask = movemask(valid); |
| 38 | depth_scale = rsqrt(dot(ray.dir,ray.dir)); |
| 39 | while (mask) { |
| 40 | size_t k = bscf(v&: mask); |
| 41 | Vec3fa ray_dir_k = Vec3fa(ray.dir.x[k],ray.dir.y[k],ray.dir.z[k]); |
| 42 | LinearSpace3fa ray_space_k = frame(depth_scale[k]*ray_dir_k); |
| 43 | ray_space_k.vz *= depth_scale[k]; |
| 44 | ray_space[k] = ray_space_k.transposed(); |
| 45 | } |
| 46 | } |
| 47 | }; |
| 48 | } |
| 49 | } |
| 50 |