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Fix Cycles bug in RR termination, probability should never be > 1.0.

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This causes render differences in some scenes, for example fishy_cat
and pabellon scenes render brighter in a few spots. This is an old
bug, not due to recent RR changes.
This commit is contained in:
Brecht Van Lommel
2017-09-12 02:27:02 +02:00
parent 467d92b8f1
commit d454a44e96
1 changed files with 1 additions and 1 deletions
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2
intern/cycles/kernel/kernel_path_state.h
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@@ -201,7 +201,7 @@ ccl_device_inline float path_state_continuation_probability(KernelGlobals *kg, c
/* Probalistic termination: use sqrt() to roughly match typical view /* Probalistic termination: use sqrt() to roughly match typical view
* transform and do path termination a bit later on average. */ * transform and do path termination a bit later on average. */
return sqrtf(max3(fabs(throughput))); return min(sqrtf(max3(fabs(throughput))), 1.0f);
} }
/* TODO(DingTo): Find more meaningful name for this */ /* TODO(DingTo): Find more meaningful name for this */