From e692e7c119c67662f63fec7c3761baf7d4b4cef1 Mon Sep 17 00:00:00 2001
From: Frederic Bouvier <fredfgfs01@free.fr>
Date: Sat, 19 May 2012 19:39:38 +0200
Subject: [PATCH] Hack to avoid redrawing the whole scene another time when
 only light volume are requested

---
 simgear/scene/material/EffectCullVisitor.cxx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/simgear/scene/material/EffectCullVisitor.cxx b/simgear/scene/material/EffectCullVisitor.cxx
index 4f84552e..4559ee0b 100644
--- a/simgear/scene/material/EffectCullVisitor.cxx
+++ b/simgear/scene/material/EffectCullVisitor.cxx
@@ -52,6 +52,8 @@ CullVisitor* EffectCullVisitor::clone() const
 
 void EffectCullVisitor::apply(osg::Geode& node)
 {
+    if (node.getNodeMask() != simgear::MODELLIGHT_BIT ) // HACK
+        node.setNodeMask(node.getNodeMask() & ~simgear::MODELLIGHT_BIT);
     if (isCulled(node))
         return;
     EffectGeode *eg = dynamic_cast<EffectGeode*>(&node);
-- 
2.39.5