PRBVolpath: only use the cloned sampler for the adjoint NEE phase, to…

… get consistent interactions with the primal one
mitsuba-renderer · Jul 20, 2023 · a946691 · a946691
1 parent 0fe80f3
commit a946691
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/python/python/ad/integrators/prbvolpath.py b/src/python/python/ad/integrators/prbvolpath.py
@@ -256,7 +256,7 @@ def sample(self,
 
                     nee_sampler = sampler if is_primal else sampler.clone()
                     emitted, ds = self.sample_emitter(mei, si, active_e_medium, active_e_surface,
-                        scene, nee_sampler, medium, channel, active_e, mode=dr.ADMode.Primal)
+                        scene, sampler, medium, channel, active_e, mode=dr.ADMode.Primal)
 
                     # Query the BSDF for that emitter-sampled direction
                     bsdf_val, bsdf_pdf = bsdf.eval_pdf(ctx, si, si.to_local(ds.d), active_e_surface)