diff options
| author | Vito Caputo <vcaputo@pengaru.com> | 2017-05-26 23:46:41 -0700 |
|---|---|---|
| committer | Vito Caputo <vcaputo@pengaru.com> | 2017-05-26 23:46:41 -0700 |
| commit | 28d8022265a12e5032ddb54077f90af9f1bcb4f5 (patch) | |
| tree | c1fe2707eac86a15be4929e567ecb418ce9ccb33 /src/modules/ray/ray_camera.h | |
| parent | b8338217569a871cee6e91e3fd07766191667663 (diff) | |
ray: s/nlerp/lerp/ where normalize is unnecessary
It's only necessary to normalize the direction stored vector in x_step(),
the rest can simply be linearly interpolated which saves some divides.
Diffstat (limited to 'src/modules/ray/ray_camera.h')
| -rw-r--r-- | src/modules/ray/ray_camera.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/modules/ray/ray_camera.h b/src/modules/ray/ray_camera.h index 387f8c5..6e48839 100644 --- a/src/modules/ray/ray_camera.h +++ b/src/modules/ray/ray_camera.h @@ -67,8 +67,8 @@ static inline int ray_camera_frame_y_step(ray_camera_frame_t *frame) } frame->y_alpha += frame->y_delta; - frame->cur_w = ray_3f_nlerp(&frame->nw, &frame->sw, frame->y_alpha); - frame->cur_e = ray_3f_nlerp(&frame->ne, &frame->se, frame->y_alpha); + frame->cur_w = ray_3f_lerp(&frame->nw, &frame->sw, frame->y_alpha); + frame->cur_e = ray_3f_lerp(&frame->ne, &frame->se, frame->y_alpha); frame->ray->direction = frame->cur_w; return 1; |