takes the right terrain bounds.

apps/openmw/mwrender/terrainstorage.cpp

@@ -34,7 +34,7 @@ namespace MWRender
         return land != nullptr;
     }
 
-    void TerrainStorage::getBounds(float& minX, float& maxX, float& minY, float& maxY)
+    void TerrainStorage::getBounds(float& minX, float& maxX, float& minY, float& maxY, ESM::RefId worldspace)
     {
         minX = 0;
         minY = 0;
@@ -43,6 +43,28 @@ namespace MWRender
 
         const MWWorld::ESMStore& esmStore = *MWBase::Environment::get().getESMStore();
 
+        if (ESM::isEsm4Ext(worldspace))
+        {
+            const auto& lands = esmStore.get<ESM4::Land>().getLands();
+            for (const auto& it : lands)
+            {
+                if (it.first.mWorldspace == worldspace)
+                {
+                    int x = it.first.mX;
+                    int y = it.first.mY;
+                    if (x < minX)
+                        minX = static_cast<float>(x);
+                    if (x > maxX)
+                        maxX = static_cast<float>(x);
+                    if (y < minY)
+                        minY = static_cast<float>(y);
+                    if (y > maxY)
+                        maxY = static_cast<float>(y);
+                }
+            }
+        }
+        else
+        {
             MWWorld::Store<ESM::Land>::iterator it = esmStore.get<ESM::Land>().begin();
             for (; it != esmStore.get<ESM::Land>().end(); ++it)
             {
@@ -55,7 +77,7 @@ namespace MWRender
                 if (it->mY > maxY)
                     maxY = static_cast<float>(it->mY);
             }
-
+        }
         // since grid coords are at cell origin, we need to add 1 cell
         maxX += 1;
         maxY += 1;

apps/openmw/mwrender/terrainstorage.hpp

@@ -27,7 +27,7 @@ namespace MWRender
         bool hasData(ESM::ExteriorCellLocation cellLocation) override;
 
         /// Get bounds of the whole terrain in cell units
-        void getBounds(float& minX, float& maxX, float& minY, float& maxY) override;
+        void getBounds(float& minX, float& maxX, float& minY, float& maxY, ESM::RefId worldspace) override;
 
         LandManager* getLandManager() const;
 

apps/openmw/mwworld/store.hpp

@@ -312,6 +312,7 @@ namespace MWWorld
         void updateLandPositions(const Store<ESM4::Cell>& cells);
 
         const ESM4::Land* search(ESM::ExteriorCellLocation cellLocation) const;
+        const std::unordered_map<ESM::ExteriorCellLocation, const ESM4::Land*>& getLands() const { return mLands; };
     };
 
     template <>

components/esm3terrain/storage.hpp

@@ -72,7 +72,7 @@ namespace ESMTerrain
         virtual osg::ref_ptr<const LandObject> getLand(ESM::ExteriorCellLocation cellLocation) = 0;
         virtual const ESM::LandTexture* getLandTexture(int index, short plugin) = 0;
         /// Get bounds of the whole terrain in cell units
-        void getBounds(float& minX, float& maxX, float& minY, float& maxY) override = 0;
+        void getBounds(float& minX, float& maxX, float& minY, float& maxY, ESM::RefId worldspace) override = 0;
 
         /// Get the minimum and maximum heights of a terrain region.
         /// @note Will only be called for chunks with size = minBatchSize, i.e. leafs of the quad tree.

components/terrain/quadtreeworld.cpp

@@ -130,7 +130,7 @@ namespace Terrain
 
         void build()
         {
-            mStorage->getBounds(mMinX, mMaxX, mMinY, mMaxY);
+            mStorage->getBounds(mMinX, mMaxX, mMinY, mMaxY, mWorldspace);
 
             int origSizeX = static_cast<int>(mMaxX - mMinX);
             int origSizeY = static_cast<int>(mMaxY - mMinY);

components/terrain/storage.hpp

@@ -29,7 +29,7 @@ namespace Terrain
 
     public:
         /// Get bounds of the whole terrain in cell units
-        virtual void getBounds(float& minX, float& maxX, float& minY, float& maxY) = 0;
+        virtual void getBounds(float& minX, float& maxX, float& minY, float& maxY, ESM::RefId worldspace) = 0;
 
         /// Return true if there is land data for this cell
         /// May be overriden for a faster implementation