Cycles: Fix division by zero in volume code which was producing -nan

2017-02-28 17:33:06 +01:00 · 2017-02-28 17:33:06 +01:00 · 87f236cd10
parent efe78d824e
commit 87f236cd10
1 changed files with 1 additions and 1 deletions
--- a/intern/cycles/kernel/kernel_volume.h
+++ b/intern/cycles/kernel/kernel_volume.h
@ -966,7 +966,7 @@ ccl_device VolumeIntegrateResult kernel_volume_decoupled_scatter(
 			mis_weight = 2.0f*power_heuristic(pdf, distance_pdf);
 		}
 	}
-	if(sample_t < 1e-6f) {
+	if(sample_t < 1e-6f || pdf == 0.0f) {
 		return VOLUME_PATH_SCATTERED;
 	}