diff options
Diffstat (limited to 'intern/cycles/kernel')
| -rw-r--r-- | intern/cycles/kernel/kernel_light.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/intern/cycles/kernel/kernel_light.h b/intern/cycles/kernel/kernel_light.h index 2791b3abbb6..97ae2d3db87 100644 --- a/intern/cycles/kernel/kernel_light.h +++ b/intern/cycles/kernel/kernel_light.h @@ -350,10 +350,9 @@ __device int light_distribution_sample(KernelGlobals *kg, float randt) } } - first = max(0, first-1); - kernel_assert(first >= 0 && first < kernel_data.integrator.num_distribution); - - return first; + /* clamping should not be needed but float rounding errors seem to + * make this fail on rare occasions */ + return clamp(first-1, 0, kernel_data.integrator.num_distribution-1); } /* Generic Light */ |