Do not let OSG cull lights away

simgear/scene/material/EffectCullVisitor.cxx

@@ -55,14 +55,10 @@ CullVisitor* EffectCullVisitor::clone() const
 void EffectCullVisitor::apply(osg::Node &node)
 {
     // TODO: Properly cull lights outside the viewport (override computeBounds())
-    // if (isCulled(node))
-    //     return;
+    CullVisitor::apply(node);
     SGLight *light = dynamic_cast<SGLight *>(&node);
-    if (!light) {
-        CullVisitor::apply(node);
-        return;
-    }
-    _lightList.push_back(light);
+    if (light)
+        _lightList.push_back(light);
 }
 
 void EffectCullVisitor::apply(osg::Geode& node)

simgear/scene/model/SGLight.cxx

@@ -165,6 +165,9 @@ SGLight::SGLight() :
     _quadratic_attenuation = 0.0f;
     _spot_exponent = 0.0f;
     _spot_cutoff = 180.0f;
+    // Do not let OSG cull lights by default, we usually leave that job to
+    // other algorithms, like clustered shading.
+    setCullingActive(false);
 }
 
 SGLight::~SGLight()