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@ -90,7 +90,7 @@ void SplitByBoneCountProcess::Execute( aiScene* pScene)
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// early out
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// early out
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bool isNecessary = false;
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bool isNecessary = false;
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for( size_t a = 0; a < pScene->mNumMeshes; ++a)
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for( unsigned int a = 0; a < pScene->mNumMeshes; ++a)
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if( pScene->mMeshes[a]->mNumBones > mMaxBoneCount )
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if( pScene->mMeshes[a]->mNumBones > mMaxBoneCount )
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isNecessary = true;
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isNecessary = true;
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@ -107,7 +107,7 @@ void SplitByBoneCountProcess::Execute( aiScene* pScene)
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// build a new array of meshes for the scene
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// build a new array of meshes for the scene
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std::vector<aiMesh*> meshes;
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std::vector<aiMesh*> meshes;
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for( size_t a = 0; a < pScene->mNumMeshes; ++a)
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for( unsigned int a = 0; a < pScene->mNumMeshes; ++a)
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{
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{
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aiMesh* srcMesh = pScene->mMeshes[a];
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aiMesh* srcMesh = pScene->mMeshes[a];
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@ -118,9 +118,9 @@ void SplitByBoneCountProcess::Execute( aiScene* pScene)
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if( !newMeshes.empty() )
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if( !newMeshes.empty() )
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{
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{
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// store new meshes and indices of the new meshes
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// store new meshes and indices of the new meshes
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for( size_t b = 0; b < newMeshes.size(); ++b)
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for( unsigned int b = 0; b < newMeshes.size(); ++b)
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{
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{
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mSubMeshIndices[a].push_back( meshes.size());
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mSubMeshIndices[a].push_back( static_cast<unsigned int>(meshes.size()));
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meshes.push_back( newMeshes[b]);
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meshes.push_back( newMeshes[b]);
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}
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}
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@ -130,13 +130,13 @@ void SplitByBoneCountProcess::Execute( aiScene* pScene)
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else
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else
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{
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{
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// Mesh is kept unchanged - store it's new place in the mesh array
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// Mesh is kept unchanged - store it's new place in the mesh array
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mSubMeshIndices[a].push_back( meshes.size());
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mSubMeshIndices[a].push_back( static_cast<unsigned int>(meshes.size()));
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meshes.push_back( srcMesh);
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meshes.push_back( srcMesh);
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}
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}
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}
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}
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// rebuild the scene's mesh array
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// rebuild the scene's mesh array
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pScene->mNumMeshes = meshes.size();
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pScene->mNumMeshes = static_cast<unsigned int>(meshes.size());
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delete [] pScene->mMeshes;
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delete [] pScene->mMeshes;
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pScene->mMeshes = new aiMesh*[pScene->mNumMeshes];
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pScene->mMeshes = new aiMesh*[pScene->mNumMeshes];
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std::copy( meshes.begin(), meshes.end(), pScene->mMeshes);
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std::copy( meshes.begin(), meshes.end(), pScene->mMeshes);
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@ -157,33 +157,33 @@ void SplitByBoneCountProcess::SplitMesh( const aiMesh* pMesh, std::vector<aiMesh
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// necessary optimisation: build a list of all affecting bones for each vertex
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// necessary optimisation: build a list of all affecting bones for each vertex
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// TODO: (thom) maybe add a custom allocator here to avoid allocating tens of thousands of small arrays
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// TODO: (thom) maybe add a custom allocator here to avoid allocating tens of thousands of small arrays
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typedef std::pair<size_t, float> BoneWeight;
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typedef std::pair<unsigned int, float> BoneWeight;
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std::vector< std::vector<BoneWeight> > vertexBones( pMesh->mNumVertices);
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std::vector< std::vector<BoneWeight> > vertexBones( pMesh->mNumVertices);
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for( size_t a = 0; a < pMesh->mNumBones; ++a)
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for( unsigned int a = 0; a < pMesh->mNumBones; ++a)
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{
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{
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const aiBone* bone = pMesh->mBones[a];
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const aiBone* bone = pMesh->mBones[a];
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for( size_t b = 0; b < bone->mNumWeights; ++b)
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for( unsigned int b = 0; b < bone->mNumWeights; ++b)
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vertexBones[ bone->mWeights[b].mVertexId ].push_back( BoneWeight( a, bone->mWeights[b].mWeight));
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vertexBones[ bone->mWeights[b].mVertexId ].push_back( BoneWeight( a, bone->mWeights[b].mWeight));
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}
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}
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size_t numFacesHandled = 0;
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unsigned int numFacesHandled = 0;
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std::vector<bool> isFaceHandled( pMesh->mNumFaces, false);
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std::vector<bool> isFaceHandled( pMesh->mNumFaces, false);
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while( numFacesHandled < pMesh->mNumFaces )
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while( numFacesHandled < pMesh->mNumFaces )
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{
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{
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// which bones are used in the current submesh
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// which bones are used in the current submesh
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size_t numBones = 0;
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unsigned int numBones = 0;
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std::vector<bool> isBoneUsed( pMesh->mNumBones, false);
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std::vector<bool> isBoneUsed( pMesh->mNumBones, false);
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// indices of the faces which are going to go into this submesh
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// indices of the faces which are going to go into this submesh
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std::vector<size_t> subMeshFaces;
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std::vector<unsigned int> subMeshFaces;
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subMeshFaces.reserve( pMesh->mNumFaces);
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subMeshFaces.reserve( pMesh->mNumFaces);
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// accumulated vertex count of all the faces in this submesh
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// accumulated vertex count of all the faces in this submesh
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size_t numSubMeshVertices = 0;
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unsigned int numSubMeshVertices = 0;
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// a small local array of new bones for the current face. State of all used bones for that face
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// a small local array of new bones for the current face. State of all used bones for that face
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// can only be updated AFTER the face is completely analysed. Thanks to imre for the fix.
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// can only be updated AFTER the face is completely analysed. Thanks to imre for the fix.
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std::vector<size_t> newBonesAtCurrentFace;
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std::vector<unsigned int> newBonesAtCurrentFace;
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// add faces to the new submesh as long as all bones affecting the faces' vertices fit in the limit
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// add faces to the new submesh as long as all bones affecting the faces' vertices fit in the limit
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for( size_t a = 0; a < pMesh->mNumFaces; ++a)
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for( unsigned int a = 0; a < pMesh->mNumFaces; ++a)
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{
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{
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// skip if the face is already stored in a submesh
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// skip if the face is already stored in a submesh
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if( isFaceHandled[a] )
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if( isFaceHandled[a] )
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@ -191,12 +191,12 @@ void SplitByBoneCountProcess::SplitMesh( const aiMesh* pMesh, std::vector<aiMesh
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const aiFace& face = pMesh->mFaces[a];
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const aiFace& face = pMesh->mFaces[a];
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// check every vertex if its bones would still fit into the current submesh
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// check every vertex if its bones would still fit into the current submesh
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for( size_t b = 0; b < face.mNumIndices; ++b )
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for( unsigned int b = 0; b < face.mNumIndices; ++b )
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{
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{
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const std::vector<BoneWeight>& vb = vertexBones[face.mIndices[b]];
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const std::vector<BoneWeight>& vb = vertexBones[face.mIndices[b]];
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for( size_t c = 0; c < vb.size(); ++c)
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for( unsigned int c = 0; c < vb.size(); ++c)
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{
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{
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size_t boneIndex = vb[c].first;
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unsigned int boneIndex = vb[c].first;
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// if the bone is already used in this submesh, it's ok
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// if the bone is already used in this submesh, it's ok
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if( isBoneUsed[boneIndex] )
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if( isBoneUsed[boneIndex] )
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continue;
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continue;
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@ -214,7 +214,7 @@ void SplitByBoneCountProcess::SplitMesh( const aiMesh* pMesh, std::vector<aiMesh
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// mark all new bones as necessary
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// mark all new bones as necessary
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while( !newBonesAtCurrentFace.empty() )
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while( !newBonesAtCurrentFace.empty() )
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{
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{
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size_t newIndex = newBonesAtCurrentFace.back();
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unsigned int newIndex = newBonesAtCurrentFace.back();
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newBonesAtCurrentFace.pop_back(); // this also avoids the deallocation which comes with a clear()
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newBonesAtCurrentFace.pop_back(); // this also avoids the deallocation which comes with a clear()
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if( isBoneUsed[newIndex] )
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if( isBoneUsed[newIndex] )
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continue;
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continue;
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@ -242,7 +242,7 @@ void SplitByBoneCountProcess::SplitMesh( const aiMesh* pMesh, std::vector<aiMesh
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// create all the arrays for this mesh if the old mesh contained them
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// create all the arrays for this mesh if the old mesh contained them
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newMesh->mNumVertices = numSubMeshVertices;
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newMesh->mNumVertices = numSubMeshVertices;
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newMesh->mNumFaces = subMeshFaces.size();
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newMesh->mNumFaces = static_cast<unsigned int>(subMeshFaces.size());
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newMesh->mVertices = new aiVector3D[newMesh->mNumVertices];
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newMesh->mVertices = new aiVector3D[newMesh->mNumVertices];
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if( pMesh->HasNormals() )
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if( pMesh->HasNormals() )
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newMesh->mNormals = new aiVector3D[newMesh->mNumVertices];
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newMesh->mNormals = new aiVector3D[newMesh->mNumVertices];
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@ -251,13 +251,13 @@ void SplitByBoneCountProcess::SplitMesh( const aiMesh* pMesh, std::vector<aiMesh
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newMesh->mTangents = new aiVector3D[newMesh->mNumVertices];
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newMesh->mTangents = new aiVector3D[newMesh->mNumVertices];
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newMesh->mBitangents = new aiVector3D[newMesh->mNumVertices];
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newMesh->mBitangents = new aiVector3D[newMesh->mNumVertices];
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}
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}
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for( size_t a = 0; a < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++a )
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for( unsigned int a = 0; a < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++a )
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{
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{
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if( pMesh->HasTextureCoords( a) )
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if( pMesh->HasTextureCoords( a) )
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newMesh->mTextureCoords[a] = new aiVector3D[newMesh->mNumVertices];
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newMesh->mTextureCoords[a] = new aiVector3D[newMesh->mNumVertices];
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newMesh->mNumUVComponents[a] = pMesh->mNumUVComponents[a];
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newMesh->mNumUVComponents[a] = pMesh->mNumUVComponents[a];
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}
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}
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for( size_t a = 0; a < AI_MAX_NUMBER_OF_COLOR_SETS; ++a )
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for( unsigned int a = 0; a < AI_MAX_NUMBER_OF_COLOR_SETS; ++a )
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{
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{
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if( pMesh->HasVertexColors( a) )
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if( pMesh->HasVertexColors( a) )
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newMesh->mColors[a] = new aiColor4D[newMesh->mNumVertices];
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newMesh->mColors[a] = new aiColor4D[newMesh->mNumVertices];
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@ -265,9 +265,9 @@ void SplitByBoneCountProcess::SplitMesh( const aiMesh* pMesh, std::vector<aiMesh
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// and copy over the data, generating faces with linear indices along the way
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// and copy over the data, generating faces with linear indices along the way
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newMesh->mFaces = new aiFace[subMeshFaces.size()];
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newMesh->mFaces = new aiFace[subMeshFaces.size()];
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size_t nvi = 0; // next vertex index
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unsigned int nvi = 0; // next vertex index
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std::vector<size_t> previousVertexIndices( numSubMeshVertices, std::numeric_limits<size_t>::max()); // per new vertex: its index in the source mesh
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std::vector<unsigned int> previousVertexIndices( numSubMeshVertices, std::numeric_limits<unsigned int>::max()); // per new vertex: its index in the source mesh
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for( size_t a = 0; a < subMeshFaces.size(); ++a )
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for( unsigned int a = 0; a < subMeshFaces.size(); ++a )
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{
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{
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const aiFace& srcFace = pMesh->mFaces[subMeshFaces[a]];
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const aiFace& srcFace = pMesh->mFaces[subMeshFaces[a]];
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aiFace& dstFace = newMesh->mFaces[a];
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aiFace& dstFace = newMesh->mFaces[a];
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@ -275,9 +275,9 @@ void SplitByBoneCountProcess::SplitMesh( const aiMesh* pMesh, std::vector<aiMesh
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dstFace.mIndices = new unsigned int[dstFace.mNumIndices];
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dstFace.mIndices = new unsigned int[dstFace.mNumIndices];
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// accumulate linearly all the vertices of the source face
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// accumulate linearly all the vertices of the source face
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for( size_t b = 0; b < dstFace.mNumIndices; ++b )
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for( unsigned int b = 0; b < dstFace.mNumIndices; ++b )
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{
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{
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size_t srcIndex = srcFace.mIndices[b];
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unsigned int srcIndex = srcFace.mIndices[b];
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dstFace.mIndices[b] = nvi;
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dstFace.mIndices[b] = nvi;
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previousVertexIndices[nvi] = srcIndex;
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previousVertexIndices[nvi] = srcIndex;
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@ -289,12 +289,12 @@ void SplitByBoneCountProcess::SplitMesh( const aiMesh* pMesh, std::vector<aiMesh
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newMesh->mTangents[nvi] = pMesh->mTangents[srcIndex];
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newMesh->mTangents[nvi] = pMesh->mTangents[srcIndex];
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newMesh->mBitangents[nvi] = pMesh->mBitangents[srcIndex];
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newMesh->mBitangents[nvi] = pMesh->mBitangents[srcIndex];
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}
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}
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for( size_t c = 0; c < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++c )
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for( unsigned int c = 0; c < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++c )
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{
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{
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if( pMesh->HasTextureCoords( c) )
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if( pMesh->HasTextureCoords( c) )
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newMesh->mTextureCoords[c][nvi] = pMesh->mTextureCoords[c][srcIndex];
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newMesh->mTextureCoords[c][nvi] = pMesh->mTextureCoords[c][srcIndex];
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}
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}
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for( size_t c = 0; c < AI_MAX_NUMBER_OF_COLOR_SETS; ++c )
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for( unsigned int c = 0; c < AI_MAX_NUMBER_OF_COLOR_SETS; ++c )
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{
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{
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if( pMesh->HasVertexColors( c) )
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if( pMesh->HasVertexColors( c) )
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newMesh->mColors[c][nvi] = pMesh->mColors[c][srcIndex];
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newMesh->mColors[c][nvi] = pMesh->mColors[c][srcIndex];
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@ -310,8 +310,8 @@ void SplitByBoneCountProcess::SplitMesh( const aiMesh* pMesh, std::vector<aiMesh
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newMesh->mNumBones = 0;
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newMesh->mNumBones = 0;
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newMesh->mBones = new aiBone*[numBones];
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newMesh->mBones = new aiBone*[numBones];
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std::vector<size_t> mappedBoneIndex( pMesh->mNumBones, std::numeric_limits<size_t>::max());
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std::vector<unsigned int> mappedBoneIndex( pMesh->mNumBones, std::numeric_limits<unsigned int>::max());
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for( size_t a = 0; a < pMesh->mNumBones; ++a )
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for( unsigned int a = 0; a < pMesh->mNumBones; ++a )
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{
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{
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if( !isBoneUsed[a] )
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if( !isBoneUsed[a] )
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continue;
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continue;
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@ -329,21 +329,21 @@ void SplitByBoneCountProcess::SplitMesh( const aiMesh* pMesh, std::vector<aiMesh
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ai_assert( newMesh->mNumBones == numBones );
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ai_assert( newMesh->mNumBones == numBones );
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// iterate over all new vertices and count which bones affected its old vertex in the source mesh
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// iterate over all new vertices and count which bones affected its old vertex in the source mesh
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for( size_t a = 0; a < numSubMeshVertices; ++a )
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for( unsigned int a = 0; a < numSubMeshVertices; ++a )
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{
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{
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size_t oldIndex = previousVertexIndices[a];
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unsigned int oldIndex = previousVertexIndices[a];
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const std::vector<BoneWeight>& bonesOnThisVertex = vertexBones[oldIndex];
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const std::vector<BoneWeight>& bonesOnThisVertex = vertexBones[oldIndex];
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for( size_t b = 0; b < bonesOnThisVertex.size(); ++b )
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for( unsigned int b = 0; b < bonesOnThisVertex.size(); ++b )
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{
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{
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size_t newBoneIndex = mappedBoneIndex[ bonesOnThisVertex[b].first ];
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unsigned int newBoneIndex = mappedBoneIndex[ bonesOnThisVertex[b].first ];
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if( newBoneIndex != std::numeric_limits<size_t>::max() )
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if( newBoneIndex != std::numeric_limits<unsigned int>::max() )
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newMesh->mBones[newBoneIndex]->mNumWeights++;
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newMesh->mBones[newBoneIndex]->mNumWeights++;
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}
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}
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}
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}
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// allocate all bone weight arrays accordingly
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// allocate all bone weight arrays accordingly
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for( size_t a = 0; a < newMesh->mNumBones; ++a )
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for( unsigned int a = 0; a < newMesh->mNumBones; ++a )
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{
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{
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aiBone* bone = newMesh->mBones[a];
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aiBone* bone = newMesh->mBones[a];
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ai_assert( bone->mNumWeights > 0 );
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ai_assert( bone->mNumWeights > 0 );
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@ -352,18 +352,18 @@ void SplitByBoneCountProcess::SplitMesh( const aiMesh* pMesh, std::vector<aiMesh
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}
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}
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// now copy all the bone vertex weights for all the vertices which made it into the new submesh
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// now copy all the bone vertex weights for all the vertices which made it into the new submesh
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for( size_t a = 0; a < numSubMeshVertices; ++a)
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for( unsigned int a = 0; a < numSubMeshVertices; ++a)
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{
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{
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// find the source vertex for it in the source mesh
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// find the source vertex for it in the source mesh
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size_t previousIndex = previousVertexIndices[a];
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unsigned int previousIndex = previousVertexIndices[a];
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// these bones were affecting it
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// these bones were affecting it
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const std::vector<BoneWeight>& bonesOnThisVertex = vertexBones[previousIndex];
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const std::vector<BoneWeight>& bonesOnThisVertex = vertexBones[previousIndex];
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// all of the bones affecting it should be present in the new submesh, or else
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// all of the bones affecting it should be present in the new submesh, or else
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// the face it comprises shouldn't be present
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// the face it comprises shouldn't be present
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for( size_t b = 0; b < bonesOnThisVertex.size(); ++b)
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for( unsigned int b = 0; b < bonesOnThisVertex.size(); ++b)
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{
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{
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size_t newBoneIndex = mappedBoneIndex[ bonesOnThisVertex[b].first ];
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unsigned int newBoneIndex = mappedBoneIndex[ bonesOnThisVertex[b].first ];
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ai_assert( newBoneIndex != std::numeric_limits<size_t>::max() );
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ai_assert( newBoneIndex != std::numeric_limits<unsigned int>::max() );
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aiVertexWeight* dstWeight = newMesh->mBones[newBoneIndex]->mWeights + newMesh->mBones[newBoneIndex]->mNumWeights;
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aiVertexWeight* dstWeight = newMesh->mBones[newBoneIndex]->mWeights + newMesh->mBones[newBoneIndex]->mNumWeights;
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newMesh->mBones[newBoneIndex]->mNumWeights++;
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newMesh->mBones[newBoneIndex]->mNumWeights++;
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@ -383,22 +383,22 @@ void SplitByBoneCountProcess::UpdateNode( aiNode* pNode) const
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// rebuild the node's mesh index list
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// rebuild the node's mesh index list
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if( pNode->mNumMeshes > 0 )
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if( pNode->mNumMeshes > 0 )
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{
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{
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std::vector<size_t> newMeshList;
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std::vector<unsigned int> newMeshList;
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for( size_t a = 0; a < pNode->mNumMeshes; ++a)
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for( unsigned int a = 0; a < pNode->mNumMeshes; ++a)
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{
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{
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size_t srcIndex = pNode->mMeshes[a];
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unsigned int srcIndex = pNode->mMeshes[a];
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const std::vector<size_t>& replaceMeshes = mSubMeshIndices[srcIndex];
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const std::vector<unsigned int>& replaceMeshes = mSubMeshIndices[srcIndex];
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newMeshList.insert( newMeshList.end(), replaceMeshes.begin(), replaceMeshes.end());
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newMeshList.insert( newMeshList.end(), replaceMeshes.begin(), replaceMeshes.end());
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}
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}
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delete pNode->mMeshes;
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delete pNode->mMeshes;
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pNode->mNumMeshes = newMeshList.size();
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pNode->mNumMeshes = static_cast<unsigned int>(newMeshList.size());
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pNode->mMeshes = new unsigned int[pNode->mNumMeshes];
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pNode->mMeshes = new unsigned int[pNode->mNumMeshes];
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std::copy( newMeshList.begin(), newMeshList.end(), pNode->mMeshes);
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std::copy( newMeshList.begin(), newMeshList.end(), pNode->mMeshes);
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}
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}
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// do that also recursively for all children
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// do that also recursively for all children
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for( size_t a = 0; a < pNode->mNumChildren; ++a )
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for( unsigned int a = 0; a < pNode->mNumChildren; ++a )
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{
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{
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UpdateNode( pNode->mChildren[a]);
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UpdateNode( pNode->mChildren[a]);
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}
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}
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