photonmapper: fixed shading on the backside of diffuse surfaces

2013-09-26 16:45:28 +02:00 · 2013-09-26 16:45:28 +02:00 · ab4525afba
parent 773085525f
commit ab4525afba
1 changed files with 1 additions and 1 deletions
--- a/src/integrators/photonmapper/photonmapper.cpp
+++ b/src/integrators/photonmapper/photonmapper.cpp
@ -445,7 +445,7 @@ public:
 		/* Exhaustively recurse into all specular lobes? */
 		bool exhaustiveSpecular = rRec.depth < m_maxSpecularDepth && !cacheQuery;

-		if (isDiffuse) {
+		if (isDiffuse && (dot(its.shFrame.n, ray.d) < 0 || (bsdf->getType() & BSDF::EBackSide))) {
 			/* 1. Diffuse indirect */
 			int maxDepth = m_maxDepth == -1 ? INT_MAX : (m_maxDepth-rRec.depth);
 			if (rRec.type & RadianceQueryRecord::EIndirectSurfaceRadiance && m_globalPhotonMap.get())