some fixes

apps/openmw/mwrender/renderingmanager.cpp

@@ -56,6 +56,8 @@ RenderingManager::RenderingManager (OEngine::Render::OgreRenderer& _rend, const
     const RenderSystemCapabilities* caps = Root::getSingleton().getRenderSystem()->getCapabilities();
     if (caps->getNumMultiRenderTargets() < 2)
         Settings::Manager::setBool("shader", "Water", false);
+    if (!caps->isShaderProfileSupported("fp40") && !caps->isShaderProfileSupported("ps_4_0"))
+        Settings::Manager::setBool("enabled", "Shadows", false);
 
     // note that the order is important here
     if (useMRT())
@@ -108,7 +110,6 @@ RenderingManager::RenderingManager (OEngine::Render::OgreRenderer& _rend, const
 
 RenderingManager::~RenderingManager ()
 {
-    //TODO: destroy mSun?
     delete mPlayer;
     delete mSkyManager;
     delete mDebugging;

apps/openmw/mwrender/terrainmaterial.cpp

@@ -1339,7 +1339,13 @@ namespace Ogre
 
 			// diffuse lighting
                         for (int i=0; i<prof->getNumberOfLightsSupported(); ++i)
+                        {
+                            // shadows only for first light (directional)
+                            if (i==0)
                                 outStream << "	outputCol.rgb += litRes"<<i<<".y * lightDiffuseColour"<<i<<" * diffuse * shadow;\n";
+                            else
+                                outStream << "	outputCol.rgb += litRes"<<i<<".y * lightDiffuseColour"<<i<<" * diffuse;\n";
+                        }
 
 			// specular default
 			if (!prof->isLayerSpecularMappingEnabled())