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- std::array<bool, 4> IntersectBoxWithSphere(std::array<const Math::AABB*, 4> boxes, const Physics::Sphere& sphere) const {
- float radiusf = sphere.radius * sphere.radius;
- __m128 zero = _mm_setzero_ps();
- __m128 radius = _mm_load1_ps(&radiusf);
- __m128 centerx = _mm_load1_ps(&sphere.origin.x);
- __m128 centery = _mm_load1_ps(&sphere.origin.y);
- __m128 centerz = _mm_load1_ps(&sphere.origin.z);
- __m128 boxminx = _mm_loadu_ps(reinterpret_cast<const float*>(&boxes[0]->BottomLeftClosest));
- __m128 boxmaxx = _mm_loadu_ps(reinterpret_cast<const float*>(&boxes[0]->TopRightFurthest));
- __m128 boxminy = _mm_loadu_ps(reinterpret_cast<const float*>(&boxes[1]->BottomLeftClosest));
- __m128 boxmaxy = _mm_loadu_ps(reinterpret_cast<const float*>(&boxes[1]->TopRightFurthest));
- __m128 boxminz = _mm_loadu_ps(reinterpret_cast<const float*>(&boxes[2]->BottomLeftClosest));
- __m128 boxmaxz = _mm_loadu_ps(reinterpret_cast<const float*>(&boxes[2]->TopRightFurthest));
- __m128 e = _mm_loadu_ps(reinterpret_cast<const float*>(&boxes[3]->BottomLeftClosest));
- _MM_TRANSPOSE4_PS(boxminx, boxminy, boxminz, e);
- e = _mm_loadu_ps(reinterpret_cast<const float*>(&boxes[3]->TopRightFurthest));
- _MM_TRANSPOSE4_PS(boxmaxx, boxmaxy, boxmaxz, e);
- // _mm_max_ps(_mm_sub_ps(boxmin, center), zero)
- boxminx = _mm_max_ps(_mm_sub_ps(boxminx, centerx), zero);
- boxminy = _mm_max_ps(_mm_sub_ps(boxminy, centery), zero);
- boxminz = _mm_max_ps(_mm_sub_ps(boxminz, centerz), zero);
- // _mm_max_ps(_mm_sub_ps(center, boxmin), zero)
- boxmaxx = _mm_max_ps(_mm_sub_ps(centerx, boxmaxx), zero);
- boxmaxy = _mm_max_ps(_mm_sub_ps(centery, boxmaxy), zero);
- boxmaxz = _mm_max_ps(_mm_sub_ps(centerz, boxmaxz), zero);
- e = _mm_add_ps(_mm_add_ps(boxminx, boxmaxx), _mm_add_ps(_mm_add_ps(boxminy, boxmaxy), _mm_add_ps(boxminz, boxmaxz)));
- e = _mm_cmple_ps(_mm_mul_ps(e, e), radius);
- float output[4];
- _mm_store_ps(output, e);
- std::array<bool, 4> ret;
- for(int i = 0; i < 4; i++) {
- ret[i] = output[i];
- }
- return ret;
- }
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