Fix light direction

apps/opencs/view/render/lightingbright.cpp

@@ -13,7 +13,7 @@ void CSVRender::LightingBright::activate (osg::Group* rootNode)
 
     osg::ref_ptr<osg::Light> light (new osg::Light);
     light->setAmbient(osg::Vec4f(0.f, 0.f, 0.f, 1.f));
-    light->setDirection(osg::Vec3f(0.f, 0.f, -1.f));
+    light->setPosition(osg::Vec4f(0.f, 0.f, 1.f, 0.f));
     light->setDiffuse(osg::Vec4f(1.f, 1.f, 1.f, 1.f));
     light->setSpecular(osg::Vec4f(0.f, 0.f, 0.f, 0.f));
     light->setConstantAttenuation(1.f);

apps/opencs/view/render/lightingday.cpp

@@ -11,7 +11,7 @@ void CSVRender::LightingDay::activate (osg::Group* rootNode)
     mLightSource = new osg::LightSource;
 
     osg::ref_ptr<osg::Light> light (new osg::Light);
-    light->setDirection(osg::Vec3f(0.f, 0.f, -1.f));
+    light->setPosition(osg::Vec4f(0.f, 0.f, 1.f, 0.f));
     light->setAmbient(osg::Vec4f(0.f, 0.f, 0.f, 1.f));
     light->setDiffuse(osg::Vec4f(1.f, 1.f, 1.f, 1.f));
     light->setSpecular(osg::Vec4f(0.f, 0.f, 0.f, 0.f));

apps/opencs/view/render/lightingnight.cpp

@@ -11,7 +11,7 @@ void CSVRender::LightingNight::activate (osg::Group* rootNode)
     mLightSource = new osg::LightSource;
 
     osg::ref_ptr<osg::Light> light (new osg::Light);
-    light->setDirection(osg::Vec3f(0.f, 0.f, -1.f));
+    light->setPosition(osg::Vec4f(0.f, 0.f, 1.f, 0.f));
     light->setAmbient(osg::Vec4f(0.f, 0.f, 0.f, 1.f));
     light->setDiffuse(osg::Vec4f(0.2f, 0.2f, 0.2f, 1.f));
     light->setSpecular(osg::Vec4f(0.f, 0.f, 0.f, 0.f));

apps/openmw/mwrender/renderingmanager.cpp

@@ -178,9 +178,10 @@ namespace MWRender
 
     void RenderingManager::setSunDirection(const osg::Vec3f &direction)
     {
-        mSunLight->setDirection(direction*-1);
+        osg::Vec3 position = direction * -1;
+        mSunLight->setPosition(osg::Vec4(position.x(), position.y(), position.z(), 0));
 
-        mSky->setSunDirection(direction*-1);
+        mSky->setSunDirection(position);
     }
 
     osg::Vec3f RenderingManager::getEyePos()