diff options
Diffstat (limited to 'intern/cycles/kernel/kernel_subsurface.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_subsurface.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/intern/cycles/kernel/kernel_subsurface.h b/intern/cycles/kernel/kernel_subsurface.h index 55bbe7f95db..c75958e79c5 100644 --- a/intern/cycles/kernel/kernel_subsurface.h +++ b/intern/cycles/kernel/kernel_subsurface.h @@ -640,6 +640,12 @@ ccl_device_noinline /* If we hit the surface, we are done. */ break; } + else if (throughput.x < VOLUME_THROUGHPUT_EPSILON && + throughput.y < VOLUME_THROUGHPUT_EPSILON && + throughput.z < VOLUME_THROUGHPUT_EPSILON) { + /* Avoid unnecessary work and precision issue when throughput gets really small. */ + break; + } } kernel_assert(isfinite_safe(throughput.x) && isfinite_safe(throughput.y) && |