Fix #30011 & #30027: cycles division by zero evaluating BSDF with zero weights,

showed up as NaN on GPU render.
2012-01-31 15:59:30 +00:00
parent 87149fc4b6
commit 21554f2df5
1 changed files with 1 additions and 1 deletions
--- a/intern/cycles/kernel/kernel_shader.h
+++ b/intern/cycles/kernel/kernel_shader.h
@@ -300,7 +300,7 @@ __device_inline void _shader_bsdf_multi_eval(const ShaderData *sd, const float3
 		}
 	}
-	*pdf = sum_pdf/sum_sample_weight;
+	*pdf = (sum_sample_weight > 0.0f)? sum_pdf/sum_sample_weight: 0.0f;
 }
 #endif