diff options
Diffstat (limited to 'intern/cycles/kernel/geom/geom_object.h')
| -rw-r--r-- | intern/cycles/kernel/geom/geom_object.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/intern/cycles/kernel/geom/geom_object.h b/intern/cycles/kernel/geom/geom_object.h index 9d0a008fff1..bf1a3eb2413 100644 --- a/intern/cycles/kernel/geom/geom_object.h +++ b/intern/cycles/kernel/geom/geom_object.h @@ -428,8 +428,8 @@ ccl_device_inline void qbvh_instance_push(KernelGlobals *kg, ccl_device_inline void bvh_instance_pop(KernelGlobals *kg, int object, const Ray *ray, float3 *P, float3 *dir, float3 *idir, ccl_addr_space float *t) { if(*t != FLT_MAX) { - Transform tfm = object_fetch_transform(kg, object, OBJECT_TRANSFORM); - *t *= len(transform_direction(&tfm, 1.0f/(*idir))); + Transform tfm = object_fetch_transform(kg, object, OBJECT_INVERSE_TRANSFORM); + *t /= len(transform_direction(&tfm, ray->D)); } *P = ray->P; @@ -441,8 +441,8 @@ ccl_device_inline void bvh_instance_pop(KernelGlobals *kg, int object, const Ray ccl_device_inline void bvh_instance_pop_factor(KernelGlobals *kg, int object, const Ray *ray, float3 *P, float3 *dir, float3 *idir, float *t_fac) { - Transform tfm = object_fetch_transform(kg, object, OBJECT_TRANSFORM); - *t_fac = len(transform_direction(&tfm, 1.0f/(*idir))); + Transform tfm = object_fetch_transform(kg, object, OBJECT_INVERSE_TRANSFORM); + *t_fac = 1.0f / len(transform_direction(&tfm, ray->D)); *P = ray->P; *dir = bvh_clamp_direction(ray->D); |