Imported Upstream version 0.13.2+dsfg1
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Sebastian Ramacher
commit
fb3990e9e5
2036 changed files with 287360 additions and 0 deletions
244
libobs/graphics/vec3.h
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244
libobs/graphics/vec3.h
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/******************************************************************************
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Copyright (C) 2013 by Hugh Bailey <obs.jim@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#pragma once
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#include "math-defs.h"
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#include "vec4.h"
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#include <xmmintrin.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct plane;
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struct matrix3;
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struct matrix4;
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struct quat;
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struct vec3 {
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union {
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struct {
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float x, y, z, w;
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};
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float ptr[4];
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__m128 m;
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};
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};
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static inline void vec3_zero(struct vec3 *v)
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{
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v->m = _mm_setzero_ps();
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}
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static inline void vec3_set(struct vec3 *dst, float x, float y, float z)
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{
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dst->m = _mm_set_ps(0.0f, z, y, x);
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}
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static inline void vec3_copy(struct vec3 *dst, const struct vec3 *v)
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{
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dst->m = v->m;
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}
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EXPORT void vec3_from_vec4(struct vec3 *dst, const struct vec4 *v);
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static inline void vec3_add(struct vec3 *dst, const struct vec3 *v1,
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const struct vec3 *v2)
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{
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dst->m = _mm_add_ps(v1->m, v2->m);
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dst->w = 0.0f;
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}
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static inline void vec3_sub(struct vec3 *dst, const struct vec3 *v1,
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const struct vec3 *v2)
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{
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dst->m = _mm_sub_ps(v1->m, v2->m);
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dst->w = 0.0f;
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}
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static inline void vec3_mul(struct vec3 *dst, const struct vec3 *v1,
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const struct vec3 *v2)
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{
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dst->m = _mm_mul_ps(v1->m, v2->m);
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}
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static inline void vec3_div(struct vec3 *dst, const struct vec3 *v1,
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const struct vec3 *v2)
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{
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dst->m = _mm_div_ps(v1->m, v2->m);
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dst->w = 0.0f;
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}
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static inline void vec3_addf(struct vec3 *dst, const struct vec3 *v,
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float f)
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{
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dst->m = _mm_add_ps(v->m, _mm_set1_ps(f));
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dst->w = 0.0f;
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}
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static inline void vec3_subf(struct vec3 *dst, const struct vec3 *v,
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float f)
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{
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dst->m = _mm_sub_ps(v->m, _mm_set1_ps(f));
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dst->w = 0.0f;
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}
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static inline void vec3_mulf(struct vec3 *dst, const struct vec3 *v,
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float f)
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{
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dst->m = _mm_mul_ps(v->m, _mm_set1_ps(f));
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}
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static inline void vec3_divf(struct vec3 *dst, const struct vec3 *v,
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float f)
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{
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dst->m = _mm_div_ps(v->m, _mm_set1_ps(f));
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dst->w = 0.0f;
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}
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static inline float vec3_dot(const struct vec3 *v1, const struct vec3 *v2)
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{
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struct vec3 add;
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__m128 mul = _mm_mul_ps(v1->m, v2->m);
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add.m = _mm_add_ps(_mm_movehl_ps(mul, mul), mul);
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add.m = _mm_add_ps(_mm_shuffle_ps(add.m, add.m, 0x55), add.m);
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return add.x;
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}
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static inline void vec3_cross(struct vec3 *dst, const struct vec3 *v1,
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const struct vec3 *v2)
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{
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__m128 s1v1 = _mm_shuffle_ps(v1->m, v1->m, _MM_SHUFFLE(3, 0, 2, 1));
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__m128 s1v2 = _mm_shuffle_ps(v2->m, v2->m, _MM_SHUFFLE(3, 1, 0, 2));
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__m128 s2v1 = _mm_shuffle_ps(v1->m, v1->m, _MM_SHUFFLE(3, 1, 0, 2));
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__m128 s2v2 = _mm_shuffle_ps(v2->m, v2->m, _MM_SHUFFLE(3, 0, 2, 1));
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dst->m = _mm_sub_ps(_mm_mul_ps(s1v1, s1v2), _mm_mul_ps(s2v1, s2v2));
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}
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static inline void vec3_neg(struct vec3 *dst, const struct vec3 *v)
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{
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dst->x = -v->x;
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dst->y = -v->y;
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dst->z = -v->z;
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dst->w = 0.0f;
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}
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static inline float vec3_len(const struct vec3 *v)
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{
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float dot_val = vec3_dot(v, v);
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return (dot_val > 0.0f) ? sqrtf(dot_val) : 0.0f;
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}
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static inline float vec3_dist(const struct vec3 *v1, const struct vec3 *v2)
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{
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struct vec3 temp;
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float dot_val;
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vec3_sub(&temp, v1, v2);
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dot_val = vec3_dot(&temp, &temp);
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return (dot_val > 0.0f) ? sqrtf(dot_val) : 0.0f;
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}
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static inline void vec3_norm(struct vec3 *dst, const struct vec3 *v)
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{
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float dot_val = vec3_dot(v, v);
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dst->m = (dot_val > 0.0f) ?
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_mm_mul_ps(v->m, _mm_set1_ps(1.0f/sqrtf(dot_val))) :
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_mm_setzero_ps();
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}
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static inline bool vec3_close(const struct vec3 *v1, const struct vec3 *v2,
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float epsilon)
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{
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struct vec3 test;
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vec3_sub(&test, v1, v2);
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return test.x < epsilon && test.y < epsilon && test.z < epsilon;
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}
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static inline void vec3_min(struct vec3 *dst, const struct vec3 *v1,
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const struct vec3 *v2)
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{
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dst->m = _mm_min_ps(v1->m, v2->m);
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dst->w = 0.0f;
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}
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static inline void vec3_minf(struct vec3 *dst, const struct vec3 *v,
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float f)
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{
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dst->m = _mm_min_ps(v->m, _mm_set1_ps(f));
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dst->w = 0.0f;
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}
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static inline void vec3_max(struct vec3 *dst, const struct vec3 *v1,
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const struct vec3 *v2)
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{
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dst->m = _mm_max_ps(v1->m, v2->m);
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dst->w = 0.0f;
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}
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static inline void vec3_maxf(struct vec3 *dst, const struct vec3 *v,
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float f)
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{
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dst->m = _mm_max_ps(v->m, _mm_set1_ps(f));
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dst->w = 0.0f;
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}
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static inline void vec3_abs(struct vec3 *dst, const struct vec3 *v)
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{
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dst->x = fabsf(v->x);
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dst->y = fabsf(v->y);
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dst->z = fabsf(v->z);
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dst->w = 0.0f;
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}
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static inline void vec3_floor(struct vec3 *dst, const struct vec3 *v)
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{
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dst->x = floorf(v->x);
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dst->y = floorf(v->y);
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dst->z = floorf(v->z);
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dst->w = 0.0f;
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}
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static inline void vec3_ceil(struct vec3 *dst, const struct vec3 *v)
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{
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dst->x = ceilf(v->x);
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dst->y = ceilf(v->y);
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dst->z = ceilf(v->z);
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dst->w = 0.0f;
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}
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EXPORT float vec3_plane_dist(const struct vec3 *v, const struct plane *p);
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EXPORT void vec3_transform(struct vec3 *dst, const struct vec3 *v,
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const struct matrix4 *m);
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EXPORT void vec3_rotate(struct vec3 *dst, const struct vec3 *v,
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const struct matrix3 *m);
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EXPORT void vec3_transform3x4(struct vec3 *dst, const struct vec3 *v,
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const struct matrix3 *m);
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EXPORT void vec3_mirror(struct vec3 *dst, const struct vec3 *v,
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const struct plane *p);
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EXPORT void vec3_mirrorv(struct vec3 *dst, const struct vec3 *v,
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const struct vec3 *vec);
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EXPORT void vec3_rand(struct vec3 *dst, int positive_only);
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#ifdef __cplusplus
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}
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#endif
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