diff options
Diffstat (limited to 'intern/cycles/kernel/kernel_path_surface.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_path_surface.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/intern/cycles/kernel/kernel_path_surface.h b/intern/cycles/kernel/kernel_path_surface.h index 7b566b01b04..bca346d5ee0 100644 --- a/intern/cycles/kernel/kernel_path_surface.h +++ b/intern/cycles/kernel/kernel_path_surface.h @@ -329,10 +329,12 @@ ccl_device bool kernel_path_surface_bounce(KernelGlobals *kg, } #ifdef __VOLUME__ else if(sd->flag & SD_HAS_ONLY_VOLUME) { - /* no surface shader but have a volume shader? act transparent */ - - /* update path state, count as transparent */ - path_state_next(kg, state, LABEL_TRANSPARENT); + /* For volume bounding meshes we pass through without counting transparent + * bounces, only sanity check in case self intersection gets us stuck. */ + state->volume_bounds_bounce++; + if (state->volume_bounds_bounce > VOLUME_BOUNDS_MAX) { + return false; + } if(state->bounce == 0) ray->t -= sd->ray_length; /* clipping works through transparent */ |