terrain colourmap

apps/openmw/mwrender/terrain.cpp

@@ -191,6 +191,9 @@ namespace MWRender
                                                              y*(mLandSize-1),
                                                              mLandSize);
 
+                        mActiveProfile->setGlobalColourMapEnabled(true);
+                        mActiveProfile->setGlobalColourMap (terrain, vertex->getName());
+
                         //this is a hack to get around the fact that Ogre seems to
                         //corrupt the global colour map leading to rendering errors
                         //MaterialPtr mat = terrain->getMaterial();

apps/openmw/mwrender/terrainmaterial.cpp

@@ -31,6 +31,7 @@ namespace MWRender
 
     TerrainMaterial::Profile::Profile(Ogre::TerrainMaterialGenerator* parent, const Ogre::String& name, const Ogre::String& desc)
         : Ogre::TerrainMaterialGenerator::Profile(parent, name, desc)
+        , mGlobalColourMap(false)
     {
     }
 
@@ -56,11 +57,17 @@ namespace MWRender
         createPass();
 
         return Ogre::MaterialManager::getSingleton().getByName(matName);
+    }
 
-        /*
-        Ogre::MaterialPtr m = Ogre::MaterialManager::getSingleton().create(matName, Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
-        return m;
-        */
+    void TerrainMaterial::Profile::setGlobalColourMapEnabled (bool enabled)
+    {
+        mGlobalColourMap = enabled;
+        mParent->_markChanged();
+    }
+
+    void TerrainMaterial::Profile::setGlobalColourMap (Ogre::Terrain* terrain, const std::string& name)
+    {
+        sh::Factory::getInstance ().setTextureAlias (terrain->getMaterialName () + "_colourMap", name);
     }
 
     int TerrainMaterial::Profile::getLayersPerPass () const
@@ -76,6 +83,11 @@ namespace MWRender
 
         p->setProperty ("vertex_program", sh::makeProperty<sh::StringValue>(new sh::StringValue("terrain_vertex")));
         p->setProperty ("fragment_program", sh::makeProperty<sh::StringValue>(new sh::StringValue("terrain_fragment")));
+
+        p->mShaderProperties.setProperty ("colour_map", sh::makeProperty<sh::BooleanValue>(new sh::BooleanValue(mGlobalColourMap)));
+
+        sh::MaterialInstanceTextureUnit* colourMap = p->createTextureUnit ("colourMap");
+        colourMap->setProperty ("texture_alias", sh::makeProperty(mMaterial->getName() + "_colourMap"));
     }
 
     Ogre::MaterialPtr TerrainMaterial::Profile::generateForCompositeMap(const Ogre::Terrain* terrain)

apps/openmw/mwrender/terrainmaterial.hpp

@@ -47,10 +47,6 @@ namespace MWRender
 
         class Profile : public Ogre::TerrainMaterialGenerator::Profile
         {
-        protected:
-            Ogre::TerrainMaterialGenerator* mParent;
-            Ogre::String mName;
-            Ogre::String mDesc;
         public:
             Profile(Ogre::TerrainMaterialGenerator* parent, const Ogre::String& name, const Ogre::String& desc);
             virtual ~Profile();
@@ -69,9 +65,14 @@ namespace MWRender
 
             virtual void requestOptions(Ogre::Terrain* terrain);
 
+            void setGlobalColourMapEnabled(bool enabled);
+            void setGlobalColourMap (Ogre::Terrain* terrain, const std::string& name);
+
         private:
             sh::MaterialInstance* mMaterial;
 
+            bool mGlobalColourMap;
+
             void createPass (int index=0);
 
             int getLayersPerPass () const;

extern/shiny

@@ -1 +1 @@
-Subproject commit 1c25aca082214beddd05fa9b8adf481c7299cf0e
+Subproject commit 5cf02ac0c39115fcf7f69eea7a79c9c6ad7dbd71

files/materials/terrain.shader

@@ -3,8 +3,11 @@
 #define FOG @shGlobalSettingBool(fog)
 #define MRT @shGlobalSettingBool(mrt_output)
 
+#define COLOUR_MAP @shPropertyBool(colour_map)
+
 
 @shAllocatePassthrough(1, depth)
+@shAllocatePassthrough(2, UV)
 
 #ifdef SH_VERTEX_SHADER
 
@@ -26,6 +29,7 @@
         shOutputPosition = shMatrixMult(viewProjMatrix, worldPos);
         
         @shPassthroughAssign(depth, shOutputPosition.z);
+        @shPassthroughAssign(UV, uv0);
 
     }
 
@@ -34,11 +38,20 @@
     SH_BEGIN_PROGRAM
     
     
+#if COLOUR_MAP
+        shSampler2D(colourMap)
+#endif
+    
+#if FOG
+        shUniform(float3, fogColor) @shAutoConstant(fogColor, fog_colour)
+        shUniform(float4, fogParams) @shAutoConstant(fogParams, fog_params)
+#endif
     
         @shPassthroughFragmentInputs
     
 #if MRT
         shDeclareMrtOutput(1)
+        shUniform(float, far) @shAutoConstant(far, far_clip_distance)
 #endif
 
 
@@ -47,12 +60,22 @@
     {
 
         float depth = @shPassthroughReceive(depth);
+        float2 UV = @shPassthroughReceive(UV);
         
         shOutputColour(0) = float4(1,0,0,1);
+        
+#if COLOUR_MAP
+        shOutputColour(0).rgb *= shSample(colourMap, UV).rgb;
+#endif
+        
+#if FOG
+        float fogValue = shSaturate((depth - fogParams.y) * fogParams.w);
+        shOutputColour(0).xyz = shLerp (shOutputColour(0).xyz, fogColor, fogValue);
+#endif
 
 
 #if MRT
-        //shOutputColour(1) = float4(1,1,1,1);
+        shOutputColour(1) = float4(depth / far,1,1,1);
 #endif
     }