attempt to fix openmw's lighting (restored the sun, set proper ambient value outside)

- the fix should remain in this branch since the main branch still has the lighting by caelum

apps/openmw/mwrender/renderingmanager.cpp

@@ -20,7 +20,7 @@ using namespace Ogre;
 namespace MWRender {
 
 RenderingManager::RenderingManager (OEngine::Render::OgreRenderer& _rend, const boost::filesystem::path& resDir, OEngine::Physic::PhysicEngine* engine, MWWorld::Environment& environment)
-:mRendering(_rend), mObjects(mRendering), mActors(mRendering, environment), mDebugging(engine)
+:mRendering(_rend), mObjects(mRendering), mActors(mRendering, environment), mAmbientMode(0), mDebugging(engine)
 {
     mRendering.createScene("PlayerCam", 55, 5);
 
@@ -280,4 +280,22 @@ void RenderingManager::skipAnimation (const MWWorld::Ptr& ptr)
     mActors.skipAnimation(ptr);
 }
 
+void RenderingManager::setSunColour(const Ogre::ColourValue& colour)
+{
+    mSun->setDiffuseColour(colour);
 }
+void RenderingManager::sunEnable()
+{
+    /// \todo
+}
+void RenderingManager::sunDisable()
+{
+    /// \todo
+}
+
+void RenderingManager::setSunDirection(const Ogre::Vector3& direction)
+{
+    /// \todo
+}
+
+} // namespace

apps/openmw/mwrender/renderingmanager.hpp

@@ -87,6 +87,11 @@ class RenderingManager: private RenderingInterface {
 
     void update (float duration);
     
+    void setSunColour(const Ogre::ColourValue& colour);
+    void setSunDirection(const Ogre::Vector3& direction);
+    void sunEnable();
+    void sunDisable();
+    
     void skyEnable ();
     void skyDisable ();
     void skySetHour (double hour);

apps/openmw/mwrender/sky.cpp

@@ -14,7 +14,7 @@ using namespace MWRender;
 using namespace Ogre;
 
 // the speed at which the clouds are animated
-#define CLOUD_SPEED 0.0025
+#define CLOUD_SPEED 0.001
 
 // this distance has to be set accordingly so that the
 // celestial bodies are behind the clouds, but in front of the atmosphere
@@ -371,11 +371,12 @@ SkyManager::SkyManager (SceneNode* pMwRoot, Camera* pCamera)
     "   uniform sampler2D secondTexture : TEXUNIT1, \n"
     "   uniform float transitionFactor, \n"
     "   uniform float time, \n"
+    "   uniform float speed, \n"
     "   uniform float opacity, \n"
     "   uniform float4 emissive \n"
     ")	\n"
     "{	\n"
-    "   uv += float2(1,1) * time * "<<CLOUD_SPEED<<"; \n" // Scroll in x,y direction
+    "   uv += float2(1,1) * time * speed * "<<CLOUD_SPEED<<"; \n" // Scroll in x,y direction
     "   float4 tex = lerp(tex2D(texture, uv), tex2D(secondTexture, uv), transitionFactor); \n"
     "   oColor = color * float4(emissive.xyz,1) * tex * float4(1,1,1,opacity); \n"
     "}";
@@ -490,5 +491,16 @@ void SkyManager::setWeather(const MWWorld::WeatherResult& weather)
         mSkyColour = weather.mSkyColor;
     }
     
+    if (mCloudSpeed != weather.mCloudSpeed)
+    {
+        mCloudMaterial->getTechnique(0)->getPass(0)->getFragmentProgramParameters()->setNamedConstant("speed", Real(weather.mCloudSpeed));
+        mCloudSpeed = weather.mCloudSpeed;
+    }
+
     mViewport->setBackgroundColour(weather.mFogColor);
+    
+    /// \todo
+    // only set ambient light if we're in an exterior cell
+    // (interior cell lights are not managed by SkyManager)
+    mSceneMgr->setAmbientLight(weather.mAmbientColor);
 }

apps/openmw/mwrender/sky.hpp

@@ -144,6 +144,7 @@ namespace MWRender
         Ogre::String mNextClouds;
         float mCloudBlendFactor;
         float mCloudOpacity;
+        float mCloudSpeed;
         
         Ogre::ColourValue mCloudColour;
         Ogre::ColourValue mSkyColour;

apps/openmw/mwworld/weather.cpp

@@ -113,11 +113,6 @@ WeatherResult WeatherManager::getResult(const String& weather)
     result.mGlareView = current.mGlareView;
     result.mAmbientLoopSoundID = current.mAmbientLoopSoundID;
     
-    const float dayTime = 13.f;
-    const float nightTime = 1.f;
-    
-    float factor;
-    
     /// \todo interpolation
     
     // night
@@ -215,6 +210,8 @@ void WeatherManager::update(float duration)
         result = getResult(mCurrentWeather);
     
     mRendering->getSkyManager()->setWeather(result);
+    
+    mRendering->setSunColour(result.mSunColor);
 }
 
 void WeatherManager::setHour(const float hour)
@@ -227,7 +224,7 @@ void WeatherManager::setHour(const float hour)
     
     #include <iostream>
     std::cout << "hour " << mHour << std::endl;
-    /**/
+    */
     
     mHour = hour;
 }