Support recast mesh rendering

apps/openmw/CMakeLists.txt

@@ -21,7 +21,7 @@ add_openmw_dir (mwrender
     actors objects renderingmanager animation rotatecontroller sky npcanimation
     creatureanimation effectmanager util renderinginterface pathgrid rendermode weaponanimation
     bulletdebugdraw globalmap characterpreview camera localmap water terrainstorage ripplesimulation
-    renderbin actoranimation landmanager navmesh actorspaths
+    renderbin actoranimation landmanager navmesh actorspaths recastmesh
     )
 
 add_openmw_dir (mwinput

apps/openmw/mwrender/recastmesh.cpp

@@ -0,0 +1,92 @@
+#include "recastmesh.hpp"
+
+#include <components/sceneutil/vismask.hpp>
+#include <components/sceneutil/recastmesh.hpp>
+#include <components/debug/debuglog.hpp>
+
+#include <osg/PositionAttitudeTransform>
+
+namespace MWRender
+{
+    RecastMesh::RecastMesh(const osg::ref_ptr<osg::Group>& root, bool enabled)
+        : mRootNode(root)
+        , mEnabled(enabled)
+    {
+    }
+
+    RecastMesh::~RecastMesh()
+    {
+        if (mEnabled)
+            disable();
+    }
+
+    bool RecastMesh::toggle()
+    {
+        if (mEnabled)
+            disable();
+        else
+            enable();
+
+        return mEnabled;
+    }
+
+    void RecastMesh::update(const DetourNavigator::RecastMeshTiles& tiles, const DetourNavigator::Settings& settings)
+    {
+        if (!mEnabled)
+            return;
+
+        for (auto it = mGroups.begin(); it != mGroups.end();)
+        {
+            const auto tile = tiles.find(it->first);
+            if (tile == tiles.end())
+            {
+                mRootNode->removeChild(it->second.mValue);
+                it = mGroups.erase(it);
+                continue;
+            }
+
+            if (it->second.mGeneration != tile->second->getGeneration()
+                || it->second.mRevision != tile->second->getRevision())
+            {
+                const auto group = SceneUtil::createRecastMeshGroup(*tile->second, settings);
+                group->setNodeMask(SceneUtil::Mask_Debug);
+                mRootNode->removeChild(it->second.mValue);
+                mRootNode->addChild(group);
+                it->second.mValue = group;
+                it->second.mGeneration = tile->second->getGeneration();
+                it->second.mRevision = tile->second->getRevision();
+                continue;
+            }
+
+            ++it;
+        }
+
+        for (const auto& tile : tiles)
+        {
+            if (mGroups.count(tile.first))
+                continue;
+            const auto group = SceneUtil::createRecastMeshGroup(*tile.second, settings);
+            group->setNodeMask(SceneUtil::Mask_Debug);
+            mGroups.emplace(tile.first, Group {tile.second->getGeneration(), tile.second->getRevision(), group});
+            mRootNode->addChild(group);
+        }
+    }
+
+    void RecastMesh::reset()
+    {
+        std::for_each(mGroups.begin(), mGroups.end(), [&] (const auto& v) { mRootNode->removeChild(v.second.mValue); });
+        mGroups.clear();
+    }
+
+    void RecastMesh::enable()
+    {
+        std::for_each(mGroups.begin(), mGroups.end(), [&] (const auto& v) { mRootNode->addChild(v.second.mValue); });
+        mEnabled = true;
+    }
+
+    void RecastMesh::disable()
+    {
+        std::for_each(mGroups.begin(), mGroups.end(), [&] (const auto& v) { mRootNode->removeChild(v.second.mValue); });
+        mEnabled = false;
+    }
+}

apps/openmw/mwrender/recastmesh.hpp

@@ -0,0 +1,53 @@
+#ifndef OPENMW_MWRENDER_RECASTMESH_H
+#define OPENMW_MWRENDER_RECASTMESH_H
+
+#include <components/detournavigator/navigator.hpp>
+
+#include <osg/ref_ptr>
+
+#include <vector>
+
+namespace osg
+{
+    class Group;
+    class Geometry;
+}
+
+namespace MWRender
+{
+    class RecastMesh
+    {
+    public:
+        RecastMesh(const osg::ref_ptr<osg::Group>& root, bool enabled);
+        ~RecastMesh();
+
+        bool toggle();
+
+        void update(const DetourNavigator::RecastMeshTiles& recastMeshTiles, const DetourNavigator::Settings& settings);
+
+        void reset();
+
+        void enable();
+
+        void disable();
+
+        bool isEnabled() const
+        {
+            return mEnabled;
+        }
+
+    private:
+        struct Group
+        {
+            std::size_t mGeneration;
+            std::size_t mRevision;
+            osg::ref_ptr<osg::Group> mValue;
+        };
+
+        osg::ref_ptr<osg::Group> mRootNode;
+        bool mEnabled;
+        std::map<DetourNavigator::TilePosition, Group> mGroups;
+    };
+}
+
+#endif

apps/openmw/mwrender/renderingmanager.cpp

@@ -66,6 +66,7 @@
 #include "util.hpp"
 #include "navmesh.hpp"
 #include "actorspaths.hpp"
+#include "recastmesh.hpp"
 
 namespace
 {
@@ -260,6 +261,7 @@ namespace MWRender
 
         mNavMesh.reset(new NavMesh(mRootNode, Settings::Manager::getBool("enable nav mesh render", "Navigator")));
         mActorsPaths.reset(new ActorsPaths(mRootNode, Settings::Manager::getBool("enable agents paths render", "Navigator")));
+        mRecastMesh.reset(new RecastMesh(mRootNode, Settings::Manager::getBool("enable recast mesh render", "Navigator")));
         mPathgrid.reset(new Pathgrid(mRootNode));
 
         mObjects.reset(new Objects(mResourceSystem, sceneRoot, mUnrefQueue.get()));
@@ -585,6 +587,10 @@ namespace MWRender
         {
             return mActorsPaths->toggle();
         }
+        else if (mode == Render_RecastMesh)
+        {
+            return mRecastMesh->toggle();
+        }
         return false;
     }
 
@@ -651,6 +657,7 @@ namespace MWRender
         }
 
         updateNavMesh();
+        updateRecastMesh();
 
         mCamera->update(dt, paused);
 
@@ -1463,4 +1470,12 @@ namespace MWRender
             }
         }
     }
+
+    void RenderingManager::updateRecastMesh()
+    {
+        if (!mRecastMesh->isEnabled())
+            return;
+
+        mRecastMesh->update(mNavigator.getRecastMeshTiles(), mNavigator.getSettings());
+    }
 }

apps/openmw/mwrender/renderingmanager.hpp

@@ -82,6 +82,7 @@ namespace MWRender
     class LandManager;
     class NavMesh;
     class ActorsPaths;
+    class RecastMesh;
 
     class RenderingManager : public MWRender::RenderingInterface
     {
@@ -246,6 +247,8 @@ namespace MWRender
 
         void updateNavMesh();
 
+        void updateRecastMesh();
+
         osg::ref_ptr<osgUtil::IntersectionVisitor> getIntersectionVisitor(osgUtil::Intersector* intersector, bool ignorePlayer, bool ignoreActors);
 
         osg::ref_ptr<osgUtil::IntersectionVisitor> mIntersectionVisitor;
@@ -264,6 +267,7 @@ namespace MWRender
         std::unique_ptr<NavMesh> mNavMesh;
         std::size_t mNavMeshNumber = 0;
         std::unique_ptr<ActorsPaths> mActorsPaths;
+        std::unique_ptr<RecastMesh> mRecastMesh;
         std::unique_ptr<Pathgrid> mPathgrid;
         std::unique_ptr<Objects> mObjects;
         std::unique_ptr<Water> mWater;

apps/openmw/mwrender/rendermode.hpp

@@ -13,6 +13,7 @@ namespace MWRender
         Render_Scene,
         Render_NavMesh,
         Render_ActorsPaths,
+        Render_RecastMesh,
     };
 
 }

apps/openmw/mwscript/docs/vmformat.txt

@@ -463,5 +463,6 @@ op 0x200030c: RepairedOnMe
 op 0x200030d: RepairedOnMe, explicit
 op 0x200030e: TestCells
 op 0x200030f: TestInteriorCells
+op 0x2000310: ToggleRecastMesh
 
-opcodes 0x2000310-0x3ffffff unused
+opcodes 0x2000311-0x3ffffff unused

apps/openmw/mwscript/miscextensions.cpp

@@ -1440,6 +1440,20 @@ namespace MWScript
                 }
         };
 
+        class OpToggleRecastMesh : public Interpreter::Opcode0
+        {
+            public:
+
+                virtual void execute (Interpreter::Runtime& runtime)
+                {
+                    bool enabled =
+                        MWBase::Environment::get().getWorld()->toggleRenderMode (MWRender::Render_RecastMesh);
+
+                    runtime.getContext().report (enabled ?
+                        "Recast Mesh Rendering -> On" : "Recast Mesh Rendering -> Off");
+                }
+        };
+
         void installOpcodes (Interpreter::Interpreter& interpreter)
         {
             interpreter.installSegment5 (Compiler::Misc::opcodeXBox, new OpXBox);
@@ -1545,6 +1559,7 @@ namespace MWScript
             interpreter.installSegment5 (Compiler::Misc::opcodeSetNavMeshNumberToRender, new OpSetNavMeshNumberToRender);
             interpreter.installSegment5 (Compiler::Misc::opcodeRepairedOnMe, new OpRepairedOnMe<ImplicitRef>);
             interpreter.installSegment5 (Compiler::Misc::opcodeRepairedOnMeExplicit, new OpRepairedOnMe<ExplicitRef>);
+            interpreter.installSegment5 (Compiler::Misc::opcodeToggleRecastMesh, new OpToggleRecastMesh);
         }
     }
 }

apps/openmw_test_suite/detournavigator/navmeshtilescache.cpp

@@ -25,12 +25,15 @@ namespace
     {
         const osg::Vec3f mAgentHalfExtents {1, 2, 3};
         const TilePosition mTilePosition {0, 0};
+        const std::size_t mGeneration = 0;
+        const std::size_t mRevision = 0;
         const std::vector<int> mIndices {{0, 1, 2}};
         const std::vector<float> mVertices {{0, 0, 0, 1, 0, 0, 1, 1, 0}};
         const std::vector<AreaType> mAreaTypes {1, AreaType_ground};
         const std::vector<RecastMesh::Water> mWater {};
         const std::size_t mTrianglesPerChunk {1};
-        const RecastMesh mRecastMesh {mIndices, mVertices, mAreaTypes, mWater, mTrianglesPerChunk};
+        const RecastMesh mRecastMesh {mGeneration, mRevision, mIndices, mVertices,
+                                      mAreaTypes, mWater, mTrianglesPerChunk};
         const std::vector<OffMeshConnection> mOffMeshConnections {};
         unsigned char* const mData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
         NavMeshData mNavMeshData {mData, 1};
@@ -128,7 +131,8 @@ namespace
         const std::size_t maxSize = 1;
         NavMeshTilesCache cache(maxSize);
         const std::vector<RecastMesh::Water> water {1, RecastMesh::Water {1, btTransform::getIdentity()}};
-        const RecastMesh unexistentRecastMesh {mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
+        const RecastMesh unexistentRecastMesh {mGeneration, mRevision, mIndices, mVertices,
+            mAreaTypes, water, mTrianglesPerChunk};
 
         cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections, std::move(mNavMeshData));
         EXPECT_FALSE(cache.get(mAgentHalfExtents, mTilePosition, unexistentRecastMesh, mOffMeshConnections));
@@ -142,7 +146,8 @@ namespace
         NavMeshTilesCache cache(maxSize);
 
         const std::vector<RecastMesh::Water> water {1, RecastMesh::Water {1, btTransform::getIdentity()}};
-        const RecastMesh anotherRecastMesh {mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
+        const RecastMesh anotherRecastMesh {mGeneration, mRevision, mIndices, mVertices,
+            mAreaTypes, water, mTrianglesPerChunk};
         const auto anotherData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
         NavMeshData anotherNavMeshData {anotherData, 1};
 
@@ -162,7 +167,8 @@ namespace
         NavMeshTilesCache cache(maxSize);
 
         const std::vector<RecastMesh::Water> water {1, RecastMesh::Water {1, btTransform::getIdentity()}};
-        const RecastMesh anotherRecastMesh {mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
+        const RecastMesh anotherRecastMesh {mGeneration, mRevision, mIndices, mVertices,
+            mAreaTypes, water, mTrianglesPerChunk};
         const auto anotherData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
         NavMeshData anotherNavMeshData {anotherData, 1};
 
@@ -180,14 +186,14 @@ namespace
         NavMeshTilesCache cache(maxSize);
 
         const std::vector<RecastMesh::Water> leastRecentlySetWater {1, RecastMesh::Water {1, btTransform::getIdentity()}};
-        const RecastMesh leastRecentlySetRecastMesh {mIndices, mVertices, mAreaTypes, leastRecentlySetWater,
-                    mTrianglesPerChunk};
+        const RecastMesh leastRecentlySetRecastMesh {mGeneration, mRevision, mIndices, mVertices,
+            mAreaTypes, leastRecentlySetWater, mTrianglesPerChunk};
         const auto leastRecentlySetData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
         NavMeshData leastRecentlySetNavMeshData {leastRecentlySetData, 1};
 
         const std::vector<RecastMesh::Water> mostRecentlySetWater {1, RecastMesh::Water {2, btTransform::getIdentity()}};
-        const RecastMesh mostRecentlySetRecastMesh {mIndices, mVertices, mAreaTypes, mostRecentlySetWater,
-                    mTrianglesPerChunk};
+        const RecastMesh mostRecentlySetRecastMesh {mGeneration, mRevision, mIndices, mVertices,
+            mAreaTypes, mostRecentlySetWater, mTrianglesPerChunk};
         const auto mostRecentlySetData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
         NavMeshData mostRecentlySetNavMeshData {mostRecentlySetData, 1};
 
@@ -212,14 +218,14 @@ namespace
         NavMeshTilesCache cache(maxSize);
 
         const std::vector<RecastMesh::Water> leastRecentlyUsedWater {1, RecastMesh::Water {1, btTransform::getIdentity()}};
-        const RecastMesh leastRecentlyUsedRecastMesh {mIndices, mVertices, mAreaTypes, leastRecentlyUsedWater,
-                    mTrianglesPerChunk};
+        const RecastMesh leastRecentlyUsedRecastMesh {mGeneration, mRevision, mIndices, mVertices,
+            mAreaTypes, leastRecentlyUsedWater, mTrianglesPerChunk};
         const auto leastRecentlyUsedData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
         NavMeshData leastRecentlyUsedNavMeshData {leastRecentlyUsedData, 1};
 
         const std::vector<RecastMesh::Water> mostRecentlyUsedWater {1, RecastMesh::Water {2, btTransform::getIdentity()}};
-        const RecastMesh mostRecentlyUsedRecastMesh {mIndices, mVertices, mAreaTypes, mostRecentlyUsedWater,
-                    mTrianglesPerChunk};
+        const RecastMesh mostRecentlyUsedRecastMesh {mGeneration, mRevision, mIndices, mVertices,
+            mAreaTypes, mostRecentlyUsedWater, mTrianglesPerChunk};
         const auto mostRecentlyUsedData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
         NavMeshData mostRecentlyUsedNavMeshData {mostRecentlyUsedData, 1};
 
@@ -256,7 +262,7 @@ namespace
         NavMeshTilesCache cache(maxSize);
 
         const std::vector<RecastMesh::Water> water {1, RecastMesh::Water {1, btTransform::getIdentity()}};
-        const RecastMesh tooLargeRecastMesh {mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
+        const RecastMesh tooLargeRecastMesh {mGeneration, mRevision, mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
         const auto tooLargeData = reinterpret_cast<unsigned char*>(dtAlloc(2, DT_ALLOC_PERM));
         NavMeshData tooLargeNavMeshData {tooLargeData, 2};
 
@@ -275,12 +281,13 @@ namespace
         NavMeshTilesCache cache(maxSize);
 
         const std::vector<RecastMesh::Water> anotherWater {1, RecastMesh::Water {1, btTransform::getIdentity()}};
-        const RecastMesh anotherRecastMesh {mIndices, mVertices, mAreaTypes, anotherWater, mTrianglesPerChunk};
+        const RecastMesh anotherRecastMesh {mGeneration, mRevision, mIndices, mVertices, mAreaTypes, anotherWater, mTrianglesPerChunk};
         const auto anotherData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
         NavMeshData anotherNavMeshData {anotherData, 1};
 
         const std::vector<RecastMesh::Water> tooLargeWater {1, RecastMesh::Water {2, btTransform::getIdentity()}};
-        const RecastMesh tooLargeRecastMesh {mIndices, mVertices, mAreaTypes, tooLargeWater, mTrianglesPerChunk};
+        const RecastMesh tooLargeRecastMesh {mGeneration, mRevision, mIndices, mVertices,
+            mAreaTypes, tooLargeWater, mTrianglesPerChunk};
         const auto tooLargeData = reinterpret_cast<unsigned char*>(dtAlloc(2, DT_ALLOC_PERM));
         NavMeshData tooLargeNavMeshData {tooLargeData, 2};
 
@@ -303,7 +310,8 @@ namespace
         NavMeshTilesCache cache(maxSize);
 
         const std::vector<RecastMesh::Water> water {1, RecastMesh::Water {1, btTransform::getIdentity()}};
-        const RecastMesh anotherRecastMesh {mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
+        const RecastMesh anotherRecastMesh {mGeneration, mRevision, mIndices, mVertices,
+            mAreaTypes, water, mTrianglesPerChunk};
         const auto anotherData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
         NavMeshData anotherNavMeshData {anotherData, 1};
 
@@ -326,7 +334,7 @@ namespace
         NavMeshTilesCache cache(maxSize);
 
         const std::vector<RecastMesh::Water> water {1, RecastMesh::Water {1, btTransform::getIdentity()}};
-        const RecastMesh anotherRecastMesh {mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
+        const RecastMesh anotherRecastMesh {mGeneration, mRevision, mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
         const auto anotherData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
         NavMeshData anotherNavMeshData {anotherData, 1};
 

apps/openmw_test_suite/detournavigator/recastmeshbuilder.cpp

@@ -30,6 +30,8 @@ namespace
     {
         Settings mSettings;
         TileBounds mBounds;
+        const std::size_t mGeneration = 0;
+        const std::size_t mRevision = 0;
 
         DetourNavigatorRecastMeshBuilderTest()
         {
@@ -45,7 +47,7 @@ namespace
     TEST_F(DetourNavigatorRecastMeshBuilderTest, create_for_empty_should_return_empty)
     {
         RecastMeshBuilder builder(mSettings, mBounds);
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>());
         EXPECT_EQ(recastMesh->getIndices(), std::vector<int>());
         EXPECT_EQ(recastMesh->getAreaTypes(), std::vector<AreaType>());
@@ -59,7 +61,7 @@ namespace
 
         RecastMeshBuilder builder(mSettings, mBounds);
         builder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity(), AreaType_ground);
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             1, 0, -1,
             -1, 0, 1,
@@ -80,7 +82,7 @@ namespace
             btTransform(btMatrix3x3::getIdentity().scaled(btVector3(1, 2, 3)), btVector3(1, 2, 3)),
             AreaType_ground
         );
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             2, 3, 0,
             0, 3, 4,
@@ -96,7 +98,7 @@ namespace
         btHeightfieldTerrainShape shape(2, 2, heightfieldData.data(), 1, 0, 0, 2, PHY_FLOAT, false);
         RecastMeshBuilder builder(mSettings, mBounds);
         builder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity(), AreaType_ground);
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             -0.5, 0, -0.5,
             -0.5, 0, 0.5,
@@ -114,7 +116,7 @@ namespace
         btBoxShape shape(btVector3(1, 1, 2));
         RecastMeshBuilder builder(mSettings, mBounds);
         builder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity(), AreaType_ground);
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             1, 2, 1,
             -1, 2, 1,
@@ -161,7 +163,7 @@ namespace
             btTransform::getIdentity(),
             AreaType_ground
         );
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             1, 0, -1,
             -1, 0, 1,
@@ -210,7 +212,7 @@ namespace
             btTransform(btMatrix3x3::getIdentity().scaled(btVector3(1, 2, 3)), btVector3(1, 2, 3)),
             AreaType_ground
         );
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             2, 3, 0,
             0, 3, 4,
@@ -234,7 +236,7 @@ namespace
             btTransform(btMatrix3x3::getIdentity().scaled(btVector3(1, 2, 3)), btVector3(1, 2, 3)),
             AreaType_ground
         );
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             3, 12, 2,
             1, 12, 10,
@@ -256,7 +258,7 @@ namespace
             btTransform::getIdentity(),
             AreaType_ground
         );
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             1, 0, -1,
             -1, 0, 1,
@@ -284,7 +286,7 @@ namespace
             btTransform::getIdentity(),
             AreaType_ground
         );
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             -0.2f, 0, -0.3f,
             -0.3f, 0, -0.2f,
@@ -309,7 +311,7 @@ namespace
             static_cast<btScalar>(-osg::PI_4))),
             AreaType_ground
         );
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             0, -0.70710659027099609375, -3.535533905029296875,
             0, 0.707107067108154296875, -3.535533905029296875,
@@ -334,7 +336,7 @@ namespace
             static_cast<btScalar>(osg::PI_4))),
             AreaType_ground
         );
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             -3.535533905029296875, -0.70710659027099609375, 0,
             -3.535533905029296875, 0.707107067108154296875, 0,
@@ -359,7 +361,7 @@ namespace
             static_cast<btScalar>(osg::PI_4))),
             AreaType_ground
         );
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             1.41421353816986083984375, 0, 1.1920928955078125e-07,
             -1.41421353816986083984375, 0, -1.1920928955078125e-07,
@@ -388,7 +390,7 @@ namespace
             btTransform::getIdentity(),
             AreaType_null
         );
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             1, 0, -1,
             -1, 0, 1,
@@ -405,7 +407,7 @@ namespace
     {
         RecastMeshBuilder builder(mSettings, mBounds);
         builder.addWater(1000, btTransform(btMatrix3x3::getIdentity(), btVector3(100, 200, 300)));
-        const auto recastMesh = builder.create();
+        const auto recastMesh = builder.create(mGeneration, mRevision);
         EXPECT_EQ(recastMesh->getWater(), std::vector<RecastMesh::Water>({
             RecastMesh::Water {1000, btTransform(btMatrix3x3::getIdentity(), btVector3(100, 200, 300))}
         }));

components/CMakeLists.txt

@@ -51,7 +51,7 @@ add_component_dir (shader
 add_component_dir (sceneutil
     clone attach visitor util statesetupdater controller skeleton riggeometry morphgeometry lightcontroller
     lightmanager lightutil positionattitudetransform workqueue unrefqueue pathgridutil waterutil writescene serialize optimizer
-    actorutil detourdebugdraw navmesh agentpath shadow mwshadowtechnique vismask
+    actorutil detourdebugdraw navmesh agentpath shadow mwshadowtechnique vismask recastmesh
     )
 
 add_component_dir (nif

components/compiler/extensions0.cpp

@@ -327,6 +327,7 @@ namespace Compiler
             extensions.registerInstruction ("toggleactorspaths", "", opcodeToggleActorsPaths);
             extensions.registerInstruction ("setnavmeshnumber", "l", opcodeSetNavMeshNumberToRender);
             extensions.registerFunction ("repairedonme", 'l', "S", opcodeRepairedOnMe, opcodeRepairedOnMeExplicit);
+            extensions.registerInstruction ("togglerecastmesh", "", opcodeToggleRecastMesh);
         }
     }
 

components/compiler/opcodes.hpp

@@ -304,6 +304,7 @@ namespace Compiler
         const int opcodeSetNavMeshNumberToRender = 0x200030a;
         const int opcodeRepairedOnMe = 0x200030c;
         const int opcodeRepairedOnMeExplicit = 0x200030d;
+        const int opcodeToggleRecastMesh = 0x2000310;
     }
 
     namespace Sky

components/detournavigator/cachedrecastmeshmanager.cpp

@@ -3,8 +3,9 @@
 
 namespace DetourNavigator
 {
-    CachedRecastMeshManager::CachedRecastMeshManager(const Settings& settings, const TileBounds& bounds)
-        : mImpl(settings, bounds)
+    CachedRecastMeshManager::CachedRecastMeshManager(const Settings& settings, const TileBounds& bounds,
+            std::size_t generation)
+        : mImpl(settings, bounds, generation)
     {}
 
     bool CachedRecastMeshManager::addObject(const ObjectId id, const btCollisionShape& shape,

components/detournavigator/cachedrecastmeshmanager.hpp

@@ -10,7 +10,7 @@ namespace DetourNavigator
     class CachedRecastMeshManager
     {
     public:
-        CachedRecastMeshManager(const Settings& settings, const TileBounds& bounds);
+        CachedRecastMeshManager(const Settings& settings, const TileBounds& bounds, std::size_t generation);
 
         bool addObject(const ObjectId id, const btCollisionShape& shape, const btTransform& transform,
                        const AreaType areaType);

components/detournavigator/navigator.hpp

@@ -6,6 +6,8 @@
 #include "settings.hpp"
 #include "objectid.hpp"
 #include "navmeshcacheitem.hpp"
+#include "recastmesh.hpp"
+#include "recastmeshtiles.hpp"
 
 namespace DetourNavigator
 {
@@ -204,6 +206,8 @@ namespace DetourNavigator
          */
         boost::optional<osg::Vec3f> findRandomPointAroundCircle(const osg::Vec3f& agentHalfExtents,
             const osg::Vec3f& start, const float maxRadius, const Flags includeFlags) const;
+
+        virtual RecastMeshTiles getRecastMeshTiles() = 0;
     };
 }
 

components/detournavigator/navigatorimpl.cpp

@@ -143,6 +143,11 @@ namespace DetourNavigator
         mNavMeshManager.reportStats(frameNumber, stats);
     }
 
+    RecastMeshTiles NavigatorImpl::getRecastMeshTiles()
+    {
+        return mNavMeshManager.getRecastMeshTiles();
+    }
+
     void NavigatorImpl::updateAvoidShapeId(const ObjectId id, const ObjectId avoidId)
     {
         updateId(id, avoidId, mWaterIds);

components/detournavigator/navigatorimpl.hpp

@@ -50,6 +50,8 @@ namespace DetourNavigator
 
         void reportStats(unsigned int frameNumber, osg::Stats& stats) const override;
 
+        RecastMeshTiles getRecastMeshTiles() override;
+
     private:
         Settings mSettings;
         NavMeshManager mNavMeshManager;

components/detournavigator/navigatorstub.hpp

@@ -81,6 +81,11 @@ namespace DetourNavigator
 
         void reportStats(unsigned int /*frameNumber*/, osg::Stats& /*stats*/) const override {}
 
+        RecastMeshTiles getRecastMeshTiles() override
+        {
+            return {};
+        }
+
     private:
         Settings mDefaultSettings {};
         SharedNavMeshCacheItem mEmptyNavMeshCacheItem;

components/detournavigator/navmeshmanager.cpp

@@ -220,6 +220,17 @@ namespace DetourNavigator
         mAsyncNavMeshUpdater.reportStats(frameNumber, stats);
     }
 
+    RecastMeshTiles NavMeshManager::getRecastMeshTiles()
+    {
+        std::vector<TilePosition> tiles;
+        mRecastMeshManager.forEachTilePosition(
+            [&tiles] (const TilePosition& tile) { tiles.push_back(tile); });
+        RecastMeshTiles result;
+        std::transform(tiles.begin(), tiles.end(), std::inserter(result, result.end()),
+            [this] (const TilePosition& tile) { return std::make_pair(tile, mRecastMeshManager.getMesh(tile)); });
+        return result;
+    }
+
     void NavMeshManager::addChangedTiles(const btCollisionShape& shape, const btTransform& transform,
             const ChangeType changeType)
     {

components/detournavigator/navmeshmanager.hpp

@@ -5,6 +5,7 @@
 #include "cachedrecastmeshmanager.hpp"
 #include "offmeshconnectionsmanager.hpp"
 #include "sharednavmesh.hpp"
+#include "recastmeshtiles.hpp"
 
 #include <BulletCollision/CollisionShapes/btHeightfieldTerrainShape.h>
 
@@ -52,6 +53,8 @@ namespace DetourNavigator
 
         void reportStats(unsigned int frameNumber, osg::Stats& stats) const;
 
+        RecastMeshTiles getRecastMeshTiles();
+
     private:
         const Settings& mSettings;
         TileCachedRecastMeshManager mRecastMeshManager;

components/detournavigator/recastmesh.cpp

@@ -5,9 +5,11 @@
 
 namespace DetourNavigator
 {
-    RecastMesh::RecastMesh(std::vector<int> indices, std::vector<float> vertices, std::vector<AreaType> areaTypes,
-            std::vector<Water> water, const std::size_t trianglesPerChunk)
-        : mIndices(std::move(indices))
+    RecastMesh::RecastMesh(std::size_t generation, std::size_t revision, std::vector<int> indices, std::vector<float> vertices,
+            std::vector<AreaType> areaTypes, std::vector<Water> water, const std::size_t trianglesPerChunk)
+        : mGeneration(generation)
+        , mRevision(revision)
+        , mIndices(std::move(indices))
         , mVertices(std::move(vertices))
         , mAreaTypes(std::move(areaTypes))
         , mWater(std::move(water))

components/detournavigator/recastmesh.hpp

@@ -24,8 +24,18 @@ namespace DetourNavigator
             btTransform mTransform;
         };
 
-        RecastMesh(std::vector<int> indices, std::vector<float> vertices, std::vector<AreaType> areaTypes,
-            std::vector<Water> water, const std::size_t trianglesPerChunk);
+        RecastMesh(std::size_t generation, std::size_t revision, std::vector<int> indices, std::vector<float> vertices,
+            std::vector<AreaType> areaTypes, std::vector<Water> water, const std::size_t trianglesPerChunk);
+
+        std::size_t getGeneration() const
+        {
+            return mGeneration;
+        }
+
+        std::size_t getRevision() const
+        {
+            return mRevision;
+        }
 
         const std::vector<int>& getIndices() const
         {
@@ -68,6 +78,8 @@ namespace DetourNavigator
         }
 
     private:
+        std::size_t mGeneration;
+        std::size_t mRevision;
         std::vector<int> mIndices;
         std::vector<float> mVertices;
         std::vector<AreaType> mAreaTypes;

components/detournavigator/recastmeshbuilder.cpp

@@ -112,9 +112,10 @@ namespace DetourNavigator
         mWater.push_back(RecastMesh::Water {cellSize, transform});
     }
 
-    std::shared_ptr<RecastMesh> RecastMeshBuilder::create() const
+    std::shared_ptr<RecastMesh> RecastMeshBuilder::create(std::size_t generation, std::size_t revision) const
     {
-        return std::make_shared<RecastMesh>(mIndices, mVertices, mAreaTypes, mWater, mSettings.get().mTrianglesPerChunk);
+        return std::make_shared<RecastMesh>(generation, revision, mIndices, mVertices, mAreaTypes,
+            mWater, mSettings.get().mTrianglesPerChunk);
     }
 
     void RecastMeshBuilder::reset()

components/detournavigator/recastmeshbuilder.hpp

@@ -34,7 +34,7 @@ namespace DetourNavigator
 
         void addWater(const int mCellSize, const btTransform& transform);
 
-        std::shared_ptr<RecastMesh> create() const;
+        std::shared_ptr<RecastMesh> create(std::size_t generation, std::size_t revision) const;
 
         void reset();
 

components/detournavigator/recastmeshmanager.cpp

@@ -4,8 +4,8 @@
 
 namespace DetourNavigator
 {
-    RecastMeshManager::RecastMeshManager(const Settings& settings, const TileBounds& bounds)
-        : mShouldRebuild(false)
+    RecastMeshManager::RecastMeshManager(const Settings& settings, const TileBounds& bounds, std::size_t generation)
+        : mGeneration(generation)
         , mMeshBuilder(settings, bounds)
     {
     }
@@ -19,8 +19,8 @@ namespace DetourNavigator
             mObjectsOrder.erase(iterator);
             return false;
         }
-        mShouldRebuild = true;
-        return mShouldRebuild;
+        ++mRevision;
+        return true;
     }
 
     bool RecastMeshManager::updateObject(const ObjectId id, const btTransform& transform, const AreaType areaType)
@@ -30,8 +30,8 @@ namespace DetourNavigator
             return false;
         if (!object->second->update(transform, areaType))
             return false;
-        mShouldRebuild = true;
-        return mShouldRebuild;
+        ++mRevision;
+        return true;
     }
 
     boost::optional<RemovedRecastMeshObject> RecastMeshManager::removeObject(const ObjectId id)
@@ -42,7 +42,7 @@ namespace DetourNavigator
         const RemovedRecastMeshObject result {object->second->getShape(), object->second->getTransform()};
         mObjectsOrder.erase(object->second);
         mObjects.erase(object);
-        mShouldRebuild = true;
+        ++mRevision;
         return result;
     }
 
@@ -55,7 +55,7 @@ namespace DetourNavigator
             mWaterOrder.erase(iterator);
             return false;
         }
-        mShouldRebuild = true;
+        ++mRevision;
         return true;
     }
 
@@ -64,7 +64,7 @@ namespace DetourNavigator
         const auto water = mWater.find(cellPosition);
         if (water == mWater.end())
             return boost::none;
-        mShouldRebuild = true;
+        ++mRevision;
         const auto result = *water->second;
         mWaterOrder.erase(water->second);
         mWater.erase(water);
@@ -74,7 +74,7 @@ namespace DetourNavigator
     std::shared_ptr<RecastMesh> RecastMeshManager::getMesh()
     {
         rebuild();
-        return mMeshBuilder.create();
+        return mMeshBuilder.create(mGeneration, mLastBuildRevision);
     }
 
     bool RecastMeshManager::isEmpty() const
@@ -84,13 +84,13 @@ namespace DetourNavigator
 
     void RecastMeshManager::rebuild()
     {
-        if (!mShouldRebuild)
+        if (mLastBuildRevision == mRevision)
             return;
         mMeshBuilder.reset();
         for (const auto& v : mWaterOrder)
             mMeshBuilder.addWater(v.mCellSize, v.mTransform);
         for (const auto& v : mObjectsOrder)
             mMeshBuilder.addObject(v.getShape(), v.getTransform(), v.getAreaType());
-        mShouldRebuild = false;
+        mLastBuildRevision = mRevision;
     }
 }

components/detournavigator/recastmeshmanager.hpp

@@ -34,7 +34,7 @@ namespace DetourNavigator
             btTransform mTransform;
         };
 
-        RecastMeshManager(const Settings& settings, const TileBounds& bounds);
+        RecastMeshManager(const Settings& settings, const TileBounds& bounds, std::size_t generation);
 
         bool addObject(const ObjectId id, const btCollisionShape& shape, const btTransform& transform,
                        const AreaType areaType);
@@ -52,7 +52,9 @@ namespace DetourNavigator
         bool isEmpty() const;
 
     private:
-        bool mShouldRebuild;
+        std::size_t mRevision = 0;
+        std::size_t mLastBuildRevision = 0;
+        std::size_t mGeneration;
         RecastMeshBuilder mMeshBuilder;
         std::list<RecastMeshObject> mObjectsOrder;
         std::unordered_map<ObjectId, std::list<RecastMeshObject>::iterator> mObjects;

components/detournavigator/recastmeshtiles.hpp

@@ -0,0 +1,15 @@
+#ifndef OPENMW_COMPONENTS_DETOURNAVIGATOR_RECASTMESHTILE_H
+#define OPENMW_COMPONENTS_DETOURNAVIGATOR_RECASTMESHTILE_H
+
+#include "tileposition.hpp"
+#include "recastmesh.hpp"
+
+#include <map>
+#include <memory>
+
+namespace DetourNavigator
+{
+    using RecastMeshTiles = std::map<TilePosition, std::shared_ptr<RecastMesh>>;
+}
+
+#endif

components/detournavigator/tilecachedrecastmeshmanager.cpp

@@ -121,7 +121,7 @@ namespace DetourNavigator
                         tileBounds.mMin -= osg::Vec2f(border, border);
                         tileBounds.mMax += osg::Vec2f(border, border);
                         tile = tiles->insert(std::make_pair(tilePosition,
-                                CachedRecastMeshManager(mSettings, tileBounds))).first;
+                                CachedRecastMeshManager(mSettings, tileBounds, mTilesGeneration))).first;
                     }
                     if (tile->second.addWater(cellPosition, cellSize, transform))
                     {
@@ -151,7 +151,10 @@ namespace DetourNavigator
                 continue;
             const auto tileResult = tile->second.removeWater(cellPosition);
             if (tile->second.isEmpty())
+            {
                 tiles->erase(tile);
+                ++mTilesGeneration;
+            }
             if (tileResult && !result)
                 result = tileResult;
         }
@@ -189,7 +192,8 @@ namespace DetourNavigator
             auto tileBounds = makeTileBounds(mSettings, tilePosition);
             tileBounds.mMin -= osg::Vec2f(border, border);
             tileBounds.mMax += osg::Vec2f(border, border);
-            tile = tiles.insert(std::make_pair(tilePosition, CachedRecastMeshManager(mSettings, tileBounds))).first;
+            tile = tiles.insert(std::make_pair(
+                tilePosition, CachedRecastMeshManager(mSettings, tileBounds, mTilesGeneration))).first;
         }
         return tile->second.addObject(id, shape, transform, areaType);
     }
@@ -209,7 +213,10 @@ namespace DetourNavigator
             return boost::optional<RemovedRecastMeshObject>();
         const auto tileResult = tile->second.removeObject(id);
         if (tile->second.isEmpty())
+        {
             tiles.erase(tile);
+            ++mTilesGeneration;
+        }
         return tileResult;
     }
 }

components/detournavigator/tilecachedrecastmeshmanager.hpp

@@ -48,6 +48,7 @@ namespace DetourNavigator
         std::unordered_map<ObjectId, std::set<TilePosition>> mObjectsTilesPositions;
         std::map<osg::Vec2i, std::vector<TilePosition>> mWaterTilesPositions;
         std::size_t mRevision = 0;
+        std::size_t mTilesGeneration = 0;
 
         bool addTile(const ObjectId id, const btCollisionShape& shape, const btTransform& transform,
                      const AreaType areaType, const TilePosition& tilePosition, float border,

components/sceneutil/detourdebugdraw.cpp

@@ -50,10 +50,8 @@ namespace SceneUtil
         mDepthMask = state;
     }
 
-    void DebugDraw::texture(bool state)
+    void DebugDraw::texture(bool)
     {
-        if (state)
-            throw std::logic_error("DebugDraw does not support textures (at " __FILE__ ":" OPENMW_LINE_STRING ")");
     }
 
     void DebugDraw::begin(osg::PrimitiveSet::Mode mode, float size)
@@ -85,9 +83,10 @@ namespace SceneUtil
         vertex(pos[0], pos[1], pos[2], color, uv[0], uv[1]);
     }
 
-    void DebugDraw::vertex(const float, const float, const float, unsigned, const float, const float)
+    void DebugDraw::vertex(const float x, const float y, const float z, unsigned color, const float, const float)
     {
-        throw std::logic_error("Not implemented (at " __FILE__ ":" OPENMW_LINE_STRING ")");
+        addVertex(osg::Vec3f(x, y, z));
+        addColor(SceneUtil::colourFromRGBA(color));
     }
 
     void DebugDraw::end()

components/sceneutil/recastmesh.cpp

@@ -0,0 +1,48 @@
+#include "navmesh.hpp"
+#include "detourdebugdraw.hpp"
+
+#include <components/detournavigator/settings.hpp>
+#include <components/detournavigator/recastmesh.hpp>
+
+#include <RecastDebugDraw.h>
+
+#include <osg/Group>
+
+namespace
+{
+    std::vector<float> calculateNormals(const std::vector<float>& vertices, const std::vector<int>& indices)
+    {
+        std::vector<float> result(indices.size());
+        for (std::size_t i = 0, n = indices.size(); i < n; i += 3)
+        {
+            const float* v0_ptr = &vertices[indices[i] * 3];
+            const float* v1_ptr = &vertices[indices[i + 1] * 3];
+            const float* v2_ptr = &vertices[indices[i + 2] * 3];
+            const osg::Vec3f v0(v0_ptr[0], v0_ptr[1], v0_ptr[2]);
+            const osg::Vec3f v1(v1_ptr[0], v1_ptr[1], v1_ptr[2]);
+            const osg::Vec3f v2(v2_ptr[0], v2_ptr[1], v2_ptr[2]);
+            const osg::Vec3f e0 = v1 - v0;
+            const osg::Vec3f e1 = v2 - v0;
+            osg::Vec3f normal = e0 ^ e1;
+            normal.normalize();
+            for (std::size_t j = 0; j < 3; ++j)
+                result[i + j] = normal[j];
+        }
+        return result;
+    }
+}
+
+namespace SceneUtil
+{
+    osg::ref_ptr<osg::Group> createRecastMeshGroup(const DetourNavigator::RecastMesh& recastMesh,
+        const DetourNavigator::Settings& settings)
+    {
+        const osg::ref_ptr<osg::Group> group(new osg::Group);
+        DebugDraw debugDraw(*group, osg::Vec3f(0, 0, 0), 1.0f / settings.mRecastScaleFactor);
+        const auto normals = calculateNormals(recastMesh.getVertices(), recastMesh.getIndices());
+        const auto texScale = 1.0f / (settings.mCellSize * 10.0f);
+        duDebugDrawTriMesh(&debugDraw, recastMesh.getVertices().data(), recastMesh.getVerticesCount(),
+            recastMesh.getIndices().data(), normals.data(), recastMesh.getTrianglesCount(), nullptr, texScale);
+        return group;
+    }
+}

components/sceneutil/recastmesh.hpp

@@ -0,0 +1,23 @@
+#ifndef OPENMW_COMPONENTS_SCENEUTIL_RECASTMESH_H
+#define OPENMW_COMPONENTS_SCENEUTIL_RECASTMESH_H
+
+#include <osg/ref_ptr>
+
+namespace osg
+{
+    class Group;
+}
+
+namespace DetourNavigator
+{
+    class RecastMesh;
+    struct Settings;
+}
+
+namespace SceneUtil
+{
+    osg::ref_ptr<osg::Group> createRecastMeshGroup(const DetourNavigator::RecastMesh& recastMesh,
+        const DetourNavigator::Settings& settings);
+}
+
+#endif

docs/source/reference/modding/settings/navigator.rst

@@ -166,6 +166,20 @@ Make visible all NPC's and creaure's plans where they are going.
 Works even if Navigator is disabled.
 Potentially decreases performance.
 
+enable recast mesh render
+----------------------
+
+:Type:		boolean
+:Range:		True/False
+:Default:	False
+
+Render recast mesh that is built as set of culled tiles from physical mesh.
+Should show similar mesh to physical one.
+Little difference can be a result of floating point error.
+Absent pieces usually mean a bug in recast mesh tiles building.
+Allows to do in-game debug.
+Potentially decreases performance.
+
 Expert settings
 ***************
 

files/settings-default.cfg

@@ -748,6 +748,9 @@ enable nav mesh render = false
 # Render agents paths (true, false)
 enable agents paths render = false
 
+# Render recast mesh (true, false)
+enable recast mesh render = false
+
 # Max number of navmesh tiles (value >= 0)
 max tiles number = 512