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- // Copyright 2009-2021 Intel Corporation
- // SPDX-License-Identifier: Apache-2.0
- #pragma once
- #include "gregory_patch.h"
- namespace embree
- {
- class __aligned(64) DenseGregoryPatch3fa
- {
- typedef Vec3fa Vec3fa_4x4[4][4];
- public:
- __forceinline DenseGregoryPatch3fa (const GregoryPatch3fa& patch)
- {
- for (size_t y=0; y<4; y++)
- for (size_t x=0; x<4; x++)
- matrix[y][x] = Vec3ff(patch.v[y][x], 0.0f);
-
- matrix[0][0].w = patch.f[0][0].x;
- matrix[0][1].w = patch.f[0][0].y;
- matrix[0][2].w = patch.f[0][0].z;
- matrix[0][3].w = 0.0f;
-
- matrix[1][0].w = patch.f[0][1].x;
- matrix[1][1].w = patch.f[0][1].y;
- matrix[1][2].w = patch.f[0][1].z;
- matrix[1][3].w = 0.0f;
-
- matrix[2][0].w = patch.f[1][1].x;
- matrix[2][1].w = patch.f[1][1].y;
- matrix[2][2].w = patch.f[1][1].z;
- matrix[2][3].w = 0.0f;
-
- matrix[3][0].w = patch.f[1][0].x;
- matrix[3][1].w = patch.f[1][0].y;
- matrix[3][2].w = patch.f[1][0].z;
- matrix[3][3].w = 0.0f;
- }
- __forceinline void extract_f_m(Vec3fa f_m[2][2]) const
- {
- f_m[0][0] = Vec3fa( matrix[0][0].w, matrix[0][1].w, matrix[0][2].w );
- f_m[0][1] = Vec3fa( matrix[1][0].w, matrix[1][1].w, matrix[1][2].w );
- f_m[1][1] = Vec3fa( matrix[2][0].w, matrix[2][1].w, matrix[2][2].w );
- f_m[1][0] = Vec3fa( matrix[3][0].w, matrix[3][1].w, matrix[3][2].w );
- }
- __forceinline Vec3fa eval(const float uu, const float vv) const
- {
- __aligned(64) Vec3fa f_m[2][2]; extract_f_m(f_m);
- return GregoryPatch3fa::eval(*(Vec3fa_4x4*)&matrix,f_m,uu,vv);
- }
- __forceinline Vec3fa normal(const float uu, const float vv) const
- {
- __aligned(64) Vec3fa f_m[2][2]; extract_f_m(f_m);
- return GregoryPatch3fa::normal(*(Vec3fa_4x4*)&matrix,f_m,uu,vv);
- }
- template<class T>
- __forceinline Vec3<T> eval(const T &uu, const T &vv) const
- {
- Vec3<T> f_m[2][2];
- f_m[0][0] = Vec3<T>( matrix[0][0].w, matrix[0][1].w, matrix[0][2].w );
- f_m[0][1] = Vec3<T>( matrix[1][0].w, matrix[1][1].w, matrix[1][2].w );
- f_m[1][1] = Vec3<T>( matrix[2][0].w, matrix[2][1].w, matrix[2][2].w );
- f_m[1][0] = Vec3<T>( matrix[3][0].w, matrix[3][1].w, matrix[3][2].w );
- return GregoryPatch3fa::eval_t(*(Vec3fa_4x4*)&matrix,f_m,uu,vv);
- }
-
- template<class T>
- __forceinline Vec3<T> normal(const T &uu, const T &vv) const
- {
- Vec3<T> f_m[2][2];
- f_m[0][0] = Vec3<T>( matrix[0][0].w, matrix[0][1].w, matrix[0][2].w );
- f_m[0][1] = Vec3<T>( matrix[1][0].w, matrix[1][1].w, matrix[1][2].w );
- f_m[1][1] = Vec3<T>( matrix[2][0].w, matrix[2][1].w, matrix[2][2].w );
- f_m[1][0] = Vec3<T>( matrix[3][0].w, matrix[3][1].w, matrix[3][2].w );
- return GregoryPatch3fa::normal_t(*(Vec3fa_4x4*)&matrix,f_m,uu,vv);
- }
- __forceinline void eval(const float u, const float v,
- Vec3fa* P, Vec3fa* dPdu, Vec3fa* dPdv, Vec3fa* ddPdudu, Vec3fa* ddPdvdv, Vec3fa* ddPdudv,
- const float dscale = 1.0f) const
- {
- __aligned(64) Vec3fa f_m[2][2]; extract_f_m(f_m);
- if (P) {
- *P = GregoryPatch3fa::eval(*(Vec3fa_4x4*)&matrix,f_m,u,v);
- }
- if (dPdu) {
- assert(dPdu); *dPdu = GregoryPatch3fa::eval_du(*(Vec3fa_4x4*)&matrix,f_m,u,v)*dscale;
- assert(dPdv); *dPdv = GregoryPatch3fa::eval_dv(*(Vec3fa_4x4*)&matrix,f_m,u,v)*dscale;
- }
- if (ddPdudu) {
- assert(ddPdudu); *ddPdudu = GregoryPatch3fa::eval_dudu(*(Vec3fa_4x4*)&matrix,f_m,u,v)*sqr(dscale);
- assert(ddPdvdv); *ddPdvdv = GregoryPatch3fa::eval_dvdv(*(Vec3fa_4x4*)&matrix,f_m,u,v)*sqr(dscale);
- assert(ddPdudv); *ddPdudv = GregoryPatch3fa::eval_dudv(*(Vec3fa_4x4*)&matrix,f_m,u,v)*sqr(dscale);
- }
- }
- template<typename vbool, typename vfloat>
- __forceinline void eval(const vbool& valid, const vfloat& uu, const vfloat& vv, float* P, float* dPdu, float* dPdv, const float dscale, const size_t dstride, const size_t N) const
- {
- __aligned(64) Vec3fa f_m[2][2]; extract_f_m(f_m);
- GregoryPatch3fa::eval(matrix,f_m,valid,uu,vv,P,dPdu,dPdv,dscale,dstride,N);
- }
- private:
- Vec3ff matrix[4][4]; // f_p/m points are stored in 4th component
- };
- }
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