diff options
| author | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2012-11-26 15:05:22 +0400 |
|---|---|---|
| committer | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2012-11-26 15:05:22 +0400 |
| commit | 58ee2bdfc0b45335a8e3e4f552749a111e926c69 (patch) | |
| tree | f49d5a7154003328abf1b8e47416e3c04db27f49 /intern/cycles/kernel/kernel_light.h | |
| parent | a91814e94dbd021cf91c164ce10ff20d115dd74d (diff) | |
Fix: cycles light sampling crash, happens on rare occasions due to float
rounding errors.
Diffstat (limited to 'intern/cycles/kernel/kernel_light.h')
| -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 */ |