public void SwapComponents(ArchetypeChunk leftChunk, int leftIndex, ArchetypeChunk rightChunk, int rightIndex)
 {
     CheckWriteAccess();
     m_EntityDataAccess.SwapComponents(leftChunk, leftIndex, rightChunk, rightIndex);
 }
Пример #2
0
 public ArchetypeChunkDebugView(ArchetypeChunk ArchetypeChunk)
 {
     m_ArchetypeChunk = ArchetypeChunk;
 }
Пример #3
0
        public void Execute()
        {
            var chunks        = (ArchetypeChunk *)PrefilterData;
            var entityIndices = (int *)(chunks + UnfilteredChunkCount);

            var filter               = Filter;
            var filteredChunkCount   = 0;
            var filteredEntityOffset = 0;

            for (var m = Archetypes.Count - 1; m >= 0; --m)
            {
                var match = Archetypes.p[m];
                if (match->Archetype->EntityCount <= 0)
                {
                    continue;
                }

                var archetype             = match->Archetype;
                int chunkCount            = archetype->Chunks.Count;
                var chunkEntityCountArray = archetype->Chunks.GetChunkEntityCountArray();

                if (filter.Type == FilterType.SharedComponent)
                {
                    var indexInComponentGroup0 = filter.Shared.IndexInComponentGroup[0];
                    var sharedComponentIndex0  = filter.Shared.SharedComponentIndex[0];
                    var componentIndexInChunk0 =
                        match->IndexInArchetype[indexInComponentGroup0] - archetype->FirstSharedComponent;
                    var sharedComponents0 =
                        archetype->Chunks.GetSharedComponentValueArrayForType(componentIndexInChunk0);

                    if (filter.Shared.Count == 1)
                    {
                        for (var i = 0; i < chunkCount; ++i)
                        {
                            if (sharedComponents0[i] == sharedComponentIndex0)
                            {
                                chunks[filteredChunkCount] = new ArchetypeChunk
                                {
                                    m_Chunk = archetype->Chunks.p[i]
                                };
                                entityIndices[filteredChunkCount++] = filteredEntityOffset;
                                filteredEntityOffset += chunkEntityCountArray[i];
                            }
                        }
                    }
                    else
                    {
                        var indexInComponentGroup1 = filter.Shared.IndexInComponentGroup[1];
                        var sharedComponentIndex1  = filter.Shared.SharedComponentIndex[1];
                        var componentIndexInChunk1 =
                            match->IndexInArchetype[indexInComponentGroup1] - archetype->FirstSharedComponent;
                        var sharedComponents1 =
                            archetype->Chunks.GetSharedComponentValueArrayForType(componentIndexInChunk1);

                        for (var i = 0; i < chunkCount; ++i)
                        {
                            if (sharedComponents0[i] == sharedComponentIndex0 &&
                                sharedComponents1[i] == sharedComponentIndex1)
                            {
                                chunks[filteredChunkCount] = new ArchetypeChunk
                                {
                                    m_Chunk = archetype->Chunks.p[i]
                                };
                                entityIndices[filteredChunkCount++] = filteredEntityOffset;
                                filteredEntityOffset += chunkEntityCountArray[i];
                            }
                        }
                    }
                }
                else
                {
                    var indexInComponentGroup0 = filter.Changed.IndexInComponentGroup[0];
                    var componentIndexInChunk0 = match->IndexInArchetype[indexInComponentGroup0];
                    var changeVersions0        = archetype->Chunks.GetChangeVersionArrayForType(componentIndexInChunk0);

                    var requiredVersion = filter.RequiredChangeVersion;
                    if (filter.Changed.Count == 1)
                    {
                        for (var i = 0; i < chunkCount; ++i)
                        {
                            if (ChangeVersionUtility.DidChange(changeVersions0[i], requiredVersion))
                            {
                                chunks[filteredChunkCount] = new ArchetypeChunk
                                {
                                    m_Chunk = archetype->Chunks.p[i]
                                };
                                entityIndices[filteredChunkCount++] = filteredEntityOffset;
                                filteredEntityOffset += chunkEntityCountArray[i];
                            }
                        }
                    }
                    else
                    {
                        var indexInComponentGroup1 = filter.Changed.IndexInComponentGroup[1];
                        var componentIndexInChunk1 = match->IndexInArchetype[indexInComponentGroup1];
                        var changeVersions1        =
                            archetype->Chunks.GetChangeVersionArrayForType(componentIndexInChunk1);

                        for (var i = 0; i < chunkCount; ++i)
                        {
                            if (ChangeVersionUtility.DidChange(changeVersions0[i], requiredVersion) ||
                                ChangeVersionUtility.DidChange(changeVersions1[i], requiredVersion))
                            {
                                chunks[filteredChunkCount] = new ArchetypeChunk
                                {
                                    m_Chunk = archetype->Chunks.p[i]
                                };
                                entityIndices[filteredChunkCount++] = filteredEntityOffset;
                                filteredEntityOffset += chunkEntityCountArray[i];
                            }
                        }
                    }
                }
            }

            UnsafeUtility.MemMove(chunks + filteredChunkCount, chunks + UnfilteredChunkCount, filteredChunkCount * sizeof(int));

            var chunkCounter = entityIndices + UnfilteredChunkCount;

            *chunkCounter = filteredChunkCount;
        }
Пример #4
0
        public void Execute(int index)
        {
            var filter          = Filter;
            int filteredCount   = 0;
            var match           = MatchingArchetypes[index];
            var archetype       = match->Archetype;
            int chunkCount      = archetype->Chunks.Count;
            var writeIndex      = Offsets[index];
            var archetypeChunks = archetype->Chunks.p;

            if (filter.Type == FilterType.SharedComponent)
            {
                var indexInComponentGroup1 = filter.Shared.IndexInComponentGroup[0];
                var sharedComponentIndex1  = filter.Shared.SharedComponentIndex[0];
                var componentIndexInChunk1 = match->IndexInArchetype[indexInComponentGroup1] - archetype->FirstSharedComponent;
                var sharedComponents1      = archetype->Chunks.GetSharedComponentValueArrayForType(componentIndexInChunk1);

                if (filter.Shared.Count == 1)
                {
                    for (var i = 0; i < chunkCount; ++i)
                    {
                        if (sharedComponents1[i] == sharedComponentIndex1)
                        {
                            SparseChunks[writeIndex + filteredCount++] = new ArchetypeChunk {
                                m_Chunk = archetypeChunks[i]
                            }
                        }
                        ;
                    }
                }
                else
                {
                    var indexInComponentGroup2 = filter.Shared.IndexInComponentGroup[1];
                    var sharedComponentIndex2  = filter.Shared.SharedComponentIndex[1];
                    var componentIndexInChunk2 = match->IndexInArchetype[indexInComponentGroup2] - archetype->FirstSharedComponent;
                    var sharedComponents2      = archetype->Chunks.GetSharedComponentValueArrayForType(componentIndexInChunk2);

                    for (var i = 0; i < chunkCount; ++i)
                    {
                        if (sharedComponents1[i] == sharedComponentIndex1 && sharedComponents2[i] == sharedComponentIndex2)
                        {
                            SparseChunks[writeIndex + filteredCount++] = new ArchetypeChunk {
                                m_Chunk = archetypeChunks[i]
                            }
                        }
                        ;
                    }
                }
            }
            else
            {
                var indexInComponentGroup1 = filter.Changed.IndexInComponentGroup[0];
                var componentIndexInChunk1 = match->IndexInArchetype[indexInComponentGroup1];
                var changeVersions1        = archetype->Chunks.GetChangeVersionArrayForType(componentIndexInChunk1);

                var requiredVersion = filter.RequiredChangeVersion;
                if (filter.Changed.Count == 1)
                {
                    for (var i = 0; i < chunkCount; ++i)
                    {
                        if (ChangeVersionUtility.DidChange(changeVersions1[i], requiredVersion))
                        {
                            SparseChunks[writeIndex + filteredCount++] = new ArchetypeChunk {
                                m_Chunk = archetypeChunks[i]
                            }
                        }
                        ;
                    }
                }
                else
                {
                    var indexInComponentGroup2 = filter.Changed.IndexInComponentGroup[1];
                    var componentIndexInChunk2 = match->IndexInArchetype[indexInComponentGroup2];
                    var changeVersions2        = archetype->Chunks.GetChangeVersionArrayForType(componentIndexInChunk2);

                    for (var i = 0; i < chunkCount; ++i)
                    {
                        if (ChangeVersionUtility.DidChange(changeVersions1[i], requiredVersion) || ChangeVersionUtility.DidChange(changeVersions2[i], requiredVersion))
                        {
                            SparseChunks[writeIndex + filteredCount++] = new ArchetypeChunk {
                                m_Chunk = archetypeChunks[i]
                            }
                        }
                        ;
                    }
                }
            }

            FilteredCounts[index] = filteredCount;
        }
    }
        public void SwapComponents(ArchetypeChunk leftChunk, int leftIndex, ArchetypeChunk rightChunk, int rightIndex)
        {
            var ecs = GetCheckedEntityDataAccess();

            ecs->SwapComponents(leftChunk, leftIndex, rightChunk, rightIndex);
        }
 /// <summary>
 /// Swaps the components of two entities.
 /// </summary>
 /// <remarks>
 /// The entities must have the same components. However, this function can swap the components of entities in
 /// different worlds, so they do not need to have identical archetype instances.
 ///
 /// **Important:** This function creates a sync point, which means that the EntityManager waits for all
 /// currently running Jobs to complete before swapping the components and no additional Jobs can start before
 /// the function is finished. A sync point can cause a drop in performance because the ECS framework may not
 /// be able to make use of the processing power of all available cores.
 /// </remarks>
 /// <param name="leftChunk">A chunk containing one of the entities to swap.</param>
 /// <param name="leftIndex">The index within the `leftChunk` of the entity and components to swap.</param>
 /// <param name="rightChunk">The chunk containing the other entity to swap. This chunk can be the same as
 /// the `leftChunk`. It also does not need to be in the same World as `leftChunk`.</param>
 /// <param name="rightIndex">The index within the `rightChunk`  of the entity and components to swap.</param>
 public void SwapComponents(ArchetypeChunk leftChunk, int leftIndex, ArchetypeChunk rightChunk, int rightIndex)
 {
     BeforeStructuralChange();
     ChunkDataUtility.SwapComponents(leftChunk.m_Chunk, leftIndex, rightChunk.m_Chunk, rightIndex, 1,
                                     GlobalSystemVersion, GlobalSystemVersion);
 }
Пример #7
0
 public void UnlockChunkOrder(ArchetypeChunk chunk)
 {
 }
            // This must be run after chunks have been remapped since FreeChunksBySharedComponents needs the shared component
            // indices in the chunks to be remapped
            public void Execute(int index)
            {
                var srcArchetype  = remapArchetypes[index].srcArchetype;
                int srcChunkCount = srcArchetype->Chunks.Count;

                var dstArchetype  = remapArchetypes[index].dstArchetype;
                int dstChunkCount = dstArchetype->Chunks.Count;

                dstArchetype->Chunks.MoveChunks(srcArchetype->Chunks);

                if (srcArchetype->NumSharedComponents == 0)
                {
                    if (srcArchetype->ChunksWithEmptySlots.Length != 0)
                    {
                        dstArchetype->ChunksWithEmptySlots.SetCapacity(
                            srcArchetype->ChunksWithEmptySlots.Length + dstArchetype->ChunksWithEmptySlots.Length);
                        dstArchetype->ChunksWithEmptySlots.AddRange(srcArchetype->ChunksWithEmptySlots);
                        srcArchetype->ChunksWithEmptySlots.Resize(0);
                    }
                }
                else
                {
                    for (int i = 0; i < dstArchetype->NumSharedComponents; ++i)
                    {
                        var srcArray = srcArchetype->Chunks.GetSharedComponentValueArrayForType(i);
                        var dstArray = dstArchetype->Chunks.GetSharedComponentValueArrayForType(i) + dstChunkCount;
                        for (int j = 0; j < srcChunkCount; ++j)
                        {
                            int srcIndex = srcArray[j];
                            int remapped = remapShared[srcIndex];
                            dstArray[j] = remapped;
                        }
                    }

                    for (int i = 0; i < srcChunkCount; ++i)
                    {
                        var chunk = dstArchetype->Chunks[i + dstChunkCount];
                        if (chunk->Count < chunk->Capacity)
                        {
                            dstArchetype->FreeChunksBySharedComponents.Add(dstArchetype->Chunks[i + dstChunkCount]);
                        }
                    }

                    srcArchetype->FreeChunksBySharedComponents.Init(16);
                }

                var globalSystemVersion = dstEntityComponentStore->GlobalSystemVersion;

                // Set change versions to GlobalSystemVersion
                for (int iType = 0; iType < dstArchetype->TypesCount; ++iType)
                {
                    var dstArray = dstArchetype->Chunks.GetChangeVersionArrayForType(iType) + dstChunkCount;
                    for (int i = 0; i < srcChunkCount; ++i)
                    {
                        dstArray[i] = globalSystemVersion;
                    }
                }

                // Copy chunk count array
                var dstCountArray = dstArchetype->Chunks.GetChunkEntityCountArray() + dstChunkCount;

                UnsafeUtility.MemCpy(dstCountArray, srcArchetype->Chunks.GetChunkEntityCountArray(),
                                     sizeof(int) * srcChunkCount);

                // Fix up chunk pointers in ChunkHeaders
                if (dstArchetype->HasChunkComponents)
                {
                    var metaArchetype    = dstArchetype->MetaChunkArchetype;
                    var indexInTypeArray = ChunkDataUtility.GetIndexInTypeArray(metaArchetype, chunkHeaderType);
                    var offset           = metaArchetype->Offsets[indexInTypeArray];
                    var sizeOf           = metaArchetype->SizeOfs[indexInTypeArray];

                    for (int i = 0; i < srcChunkCount; ++i)
                    {
                        // Set chunk header without bumping change versions since they are zeroed when processing meta chunk
                        // modifying them here would be a race condition
                        var chunk             = dstArchetype->Chunks[i + dstChunkCount];
                        var metaChunkEntity   = chunk->metaChunkEntity;
                        var metaEntityInChunk = dstEntityComponentStore->GetEntityInChunk(metaChunkEntity);
                        var chunkHeader       = (ChunkHeader *)(metaEntityInChunk.Chunk->Buffer + (offset + sizeOf * metaEntityInChunk.IndexInChunk));
                        chunkHeader->ArchetypeChunk = new ArchetypeChunk(chunk, dstEntityComponentStore);
                    }
                }

                dstArchetype->EntityCount += srcArchetype->EntityCount;
                srcArchetype->Chunks.Dispose();
                srcArchetype->EntityCount = 0;
            }
 public void Execute(ArchetypeChunk batchInChunk, int batchIndex)
 {
 }
Пример #10
0
 /// <summary>
 /// Unlocks a chunk
 /// </summary>
 /// <param name="chunk">The chunk to unlock.</param>
 public void UnlockChunk(ArchetypeChunk chunk)
 {
     EntityComponentStore->UnlockChunks(&chunk, 1, ChunkFlags.Locked);
 }
            internal unsafe static void ExecuteInternal(
                ref JobEntityBatchWrapper <T> jobWrapper,
                IntPtr bufferRangePatchData,
                ref JobRanges ranges,
                int jobIndex)
            {
                var chunks          = jobWrapper.CachedChunks;
                var prebuiltBatches = (ArchetypeChunk *)jobWrapper.PrebuiltBatchList.Ptr;

                bool isParallel  = jobWrapper.IsParallel == 1;
                bool isFiltering = jobWrapper.Filter.RequiresMatchesFilter;

                while (true)
                {
                    int beginBatchIndex = 0;
                    int endBatchIndex   = jobWrapper.UsePrebuiltBatchList == 1 ? jobWrapper.PrebuiltBatchList.Length : chunks.Length;

                    // If we are running the job in parallel, steal some work.
                    if (isParallel)
                    {
                        // If we have no range to steal, exit the loop.
                        if (!JobsUtility.GetWorkStealingRange(ref ranges, jobIndex, out beginBatchIndex, out endBatchIndex))
                        {
                            break;
                        }

                        JobsUtility.PatchBufferMinMaxRanges(bufferRangePatchData, UnsafeUtility.AddressOf(ref jobWrapper), 0, 0);
                    }

                    // Do the actual user work.
                    if (jobWrapper.UsePrebuiltBatchList == 1)
                    {
                        for (int batchIndex = beginBatchIndex; batchIndex < endBatchIndex; ++batchIndex)
                        {
                            var batch = prebuiltBatches[batchIndex];

                            if (isFiltering && !batch.m_Chunk->MatchesFilter(jobWrapper.MatchingArchetypes.Ptr[jobWrapper.PrebuiltBatchListMatchingArchetypeIndices.Ptr[batchIndex]], ref jobWrapper.Filter))
                            {
                                continue;
                            }

                            Assert.AreNotEqual(0, batch.Count);
                            jobWrapper.JobData.Execute(batch, batchIndex);
                        }
                    }
                    else
                    {
                        if (jobWrapper.JobsPerChunk == 1)
                        {
                            // 1 batch per chunk, with/without filtering
                            for (int batchIndex = beginBatchIndex; batchIndex < endBatchIndex; ++batchIndex)
                            {
                                var chunkIndex = batchIndex;
                                var chunk      = chunks.Ptr[chunkIndex];

                                if (isFiltering && !chunk->MatchesFilter(jobWrapper.MatchingArchetypes.Ptr[chunks.PerChunkMatchingArchetypeIndex.Ptr[chunkIndex]], ref jobWrapper.Filter))
                                {
                                    continue;
                                }

                                var batch = new ArchetypeChunk(chunk, chunks.EntityComponentStore);
                                Assert.AreNotEqual(0, batch.Count);
                                jobWrapper.JobData.Execute(batch, batchIndex);
                            }
                        }
                        else
                        {
                            // 2+ batches per chunk, with/without filtering
                            // This is the most general case; if only one code path survives, it should be this one.
                            for (int batchIndex = beginBatchIndex; batchIndex < endBatchIndex; ++batchIndex)
                            {
                                var chunkIndex        = batchIndex / jobWrapper.JobsPerChunk;
                                var batchIndexInChunk = batchIndex % jobWrapper.JobsPerChunk;
                                var chunk             = chunks.Ptr[chunkIndex];

                                if (isFiltering && !chunk->MatchesFilter(
                                        jobWrapper.MatchingArchetypes.Ptr[
                                            chunks.PerChunkMatchingArchetypeIndex.Ptr[chunkIndex]],
                                        ref jobWrapper.Filter))
                                {
                                    continue;
                                }

                                if (ArchetypeChunk.EntityBatchFromChunk(chunk, chunk->Count, jobWrapper.JobsPerChunk,
                                                                        batchIndexInChunk, chunks.EntityComponentStore, out var batch))
                                {
                                    jobWrapper.JobData.Execute(batch, batchIndex);
                                }
                            }
                        }
                    }

                    // If we are not running in parallel, our job is done.
                    if (!isParallel)
                    {
                        break;
                    }
                }
            }
Пример #12
0
 public void LockChunkOrder(ArchetypeChunk chunk)
 {
     EntityComponentStore->LockChunks(&chunk, 1, ChunkFlags.LockedEntityOrder);
 }
Пример #13
0
 public void Execute(ArchetypeChunk batchInChunk, int batchIndex, int indexOfFirstEntityInQuery)
 {
 }
Пример #14
0
        public void Execute()
        {
            var batches       = (ArchetypeChunk *)PrefilterData;
            var entityIndices = (int *)(batches + FilteredChunkCount * BatchesPerChunk);

            var filteredBatchCounter = 0;
            var entityIndexAggregate = 0;

            if (BatchesPerChunk == 1)
            {
                if (Filter.RequiresMatchesFilter)
                {
                    // one batch per chunk, filtering enabled
                    for (var m = 0; m < MatchingArchetypes.Length; ++m)
                    {
                        var match = MatchingArchetypes.Ptr[m];
                        if (match->Archetype->EntityCount <= 0)
                        {
                            continue;
                        }

                        var archetype             = match->Archetype;
                        int chunkCount            = archetype->Chunks.Count;
                        var chunkEntityCountArray = archetype->Chunks.GetChunkEntityCountArray();

                        for (int chunkIndex = 0; chunkIndex < chunkCount; ++chunkIndex)
                        {
                            var chunk = archetype->Chunks[chunkIndex];
                            if (match->ChunkMatchesFilter(chunkIndex, ref Filter))
                            {
                                var batch = new ArchetypeChunk(chunk, EntityComponentStore);
                                batches[filteredBatchCounter]       = batch;
                                entityIndices[filteredBatchCounter] = entityIndexAggregate;

                                ++filteredBatchCounter;
                                entityIndexAggregate += chunkEntityCountArray[chunkIndex];
                            }
                        }
                    }
                }
                else
                {
                    // one batch per chunk, filtering disabled
                    for (var m = 0; m < MatchingArchetypes.Length; ++m)
                    {
                        var match = MatchingArchetypes.Ptr[m];
                        if (match->Archetype->EntityCount <= 0)
                        {
                            continue;
                        }

                        var archetype             = match->Archetype;
                        int chunkCount            = archetype->Chunks.Count;
                        var chunkEntityCountArray = archetype->Chunks.GetChunkEntityCountArray();

                        for (int chunkIndex = 0; chunkIndex < chunkCount; ++chunkIndex)
                        {
                            var chunk = archetype->Chunks[chunkIndex];
                            var batch = new ArchetypeChunk(chunk, EntityComponentStore);
                            batches[filteredBatchCounter]       = batch;
                            entityIndices[filteredBatchCounter] = entityIndexAggregate;

                            ++filteredBatchCounter;
                            entityIndexAggregate += chunkEntityCountArray[chunkIndex];
                        }
                    }
                }
            }
            else
            {
                if (Filter.RequiresMatchesFilter)
                {
                    // 2+ batches per chunk, filtering enabled.
                    // This is the most general case; if only one code path survives, it should be this one.
                    for (var m = 0; m < MatchingArchetypes.Length; ++m)
                    {
                        var match = MatchingArchetypes.Ptr[m];
                        if (match->Archetype->EntityCount <= 0)
                        {
                            continue;
                        }

                        var archetype             = match->Archetype;
                        int chunkCount            = archetype->Chunks.Count;
                        var chunkEntityCountArray = archetype->Chunks.GetChunkEntityCountArray();

                        for (int chunkIndex = 0; chunkIndex < chunkCount; ++chunkIndex)
                        {
                            if (match->ChunkMatchesFilter(chunkIndex, ref Filter))
                            {
                                var chunk            = archetype->Chunks[chunkIndex];
                                var chunkEntityCount = chunkEntityCountArray[chunkIndex];
                                for (int batchIndex = 0; batchIndex < BatchesPerChunk; ++batchIndex)
                                {
                                    if (ArchetypeChunk.EntityBatchFromChunk(chunk, chunkEntityCount, BatchesPerChunk,
                                                                            batchIndex, EntityComponentStore, out var batch))
                                    {
                                        batches[filteredBatchCounter]       = batch;
                                        entityIndices[filteredBatchCounter] = entityIndexAggregate;

                                        ++filteredBatchCounter;
                                        entityIndexAggregate += batch.Count;
                                    }
                                }
                            }
                        }
                    }
                }
                else
                {
                    // 2+ batches per chunk, filtering disabled
                    for (var m = 0; m < MatchingArchetypes.Length; ++m)
                    {
                        var match = MatchingArchetypes.Ptr[m];
                        if (match->Archetype->EntityCount <= 0)
                        {
                            continue;
                        }

                        var archetype             = match->Archetype;
                        int chunkCount            = archetype->Chunks.Count;
                        var chunkEntityCountArray = archetype->Chunks.GetChunkEntityCountArray();

                        for (int chunkIndex = 0; chunkIndex < chunkCount; ++chunkIndex)
                        {
                            var chunk            = archetype->Chunks[chunkIndex];
                            var chunkEntityCount = chunkEntityCountArray[chunkIndex];
                            for (int batchIndex = 0; batchIndex < BatchesPerChunk; ++batchIndex)
                            {
                                if (ArchetypeChunk.EntityBatchFromChunk(chunk, chunkEntityCount, BatchesPerChunk,
                                                                        batchIndex, EntityComponentStore, out var batch))
                                {
                                    batches[filteredBatchCounter]       = batch;
                                    entityIndices[filteredBatchCounter] = entityIndexAggregate;

                                    ++filteredBatchCounter;
                                    entityIndexAggregate += batch.Count;
                                }
                            }
                        }
                    }
                }
            }

            var chunkCounter = entityIndices + FilteredChunkCount * BatchesPerChunk;

            *chunkCounter = filteredBatchCounter;
        }
Пример #15
0
 public void SwapComponents(ArchetypeChunk leftChunk, int leftIndex, ArchetypeChunk rightChunk, int rightIndex)
 {
     CheckAccess();
     ChunkDataUtility.SwapComponents(leftChunk.m_Chunk, leftIndex, rightChunk.m_Chunk, rightIndex, 1);
 }