10012f9d49
This reverts commit78b22393a8. It caused a regression in FBX import leading to crashes. Fixes #36908. (cherry picked from commitda1f80c1f2)
255 lines
8.6 KiB
C++
255 lines
8.6 KiB
C++
/*
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---------------------------------------------------------------------------
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Open Asset Import Library (assimp)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2019, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the following
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conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------
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*/
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/** @file Implementation of the post processing step "MakeVerboseFormat"
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*/
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#include "MakeVerboseFormat.h"
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#include <assimp/scene.h>
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#include <assimp/DefaultLogger.hpp>
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using namespace Assimp;
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// ------------------------------------------------------------------------------------------------
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MakeVerboseFormatProcess::MakeVerboseFormatProcess()
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{
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// nothing to do here
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}
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// ------------------------------------------------------------------------------------------------
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MakeVerboseFormatProcess::~MakeVerboseFormatProcess()
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{
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// nothing to do here
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}
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// ------------------------------------------------------------------------------------------------
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// Executes the post processing step on the given imported data.
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void MakeVerboseFormatProcess::Execute( aiScene* pScene)
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{
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ai_assert(NULL != pScene);
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ASSIMP_LOG_DEBUG("MakeVerboseFormatProcess begin");
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bool bHas = false;
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for( unsigned int a = 0; a < pScene->mNumMeshes; a++)
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{
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if( MakeVerboseFormat( pScene->mMeshes[a]))
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bHas = true;
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}
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if (bHas) {
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ASSIMP_LOG_INFO("MakeVerboseFormatProcess finished. There was much work to do ...");
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} else {
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ASSIMP_LOG_DEBUG("MakeVerboseFormatProcess. There was nothing to do.");
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}
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pScene->mFlags &= ~AI_SCENE_FLAGS_NON_VERBOSE_FORMAT;
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}
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// ------------------------------------------------------------------------------------------------
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// Executes the post processing step on the given imported data.
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bool MakeVerboseFormatProcess::MakeVerboseFormat(aiMesh* pcMesh)
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{
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ai_assert(NULL != pcMesh);
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unsigned int iOldNumVertices = pcMesh->mNumVertices;
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const unsigned int iNumVerts = pcMesh->mNumFaces*3;
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aiVector3D* pvPositions = new aiVector3D[ iNumVerts ];
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aiVector3D* pvNormals = NULL;
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if (pcMesh->HasNormals())
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{
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pvNormals = new aiVector3D[iNumVerts];
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}
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aiVector3D* pvTangents = NULL, *pvBitangents = NULL;
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if (pcMesh->HasTangentsAndBitangents())
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{
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pvTangents = new aiVector3D[iNumVerts];
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pvBitangents = new aiVector3D[iNumVerts];
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}
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aiVector3D* apvTextureCoords[AI_MAX_NUMBER_OF_TEXTURECOORDS] = {0};
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aiColor4D* apvColorSets[AI_MAX_NUMBER_OF_COLOR_SETS] = {0};
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unsigned int p = 0;
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while (pcMesh->HasTextureCoords(p))
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apvTextureCoords[p++] = new aiVector3D[iNumVerts];
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p = 0;
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while (pcMesh->HasVertexColors(p))
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apvColorSets[p++] = new aiColor4D[iNumVerts];
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// allocate enough memory to hold output bones and vertex weights ...
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std::vector<aiVertexWeight>* newWeights = new std::vector<aiVertexWeight>[pcMesh->mNumBones];
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for (unsigned int i = 0;i < pcMesh->mNumBones;++i) {
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newWeights[i].reserve(pcMesh->mBones[i]->mNumWeights*3);
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}
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// iterate through all faces and build a clean list
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unsigned int iIndex = 0;
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for (unsigned int a = 0; a< pcMesh->mNumFaces;++a)
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{
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aiFace* pcFace = &pcMesh->mFaces[a];
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for (unsigned int q = 0; q < pcFace->mNumIndices;++q,++iIndex)
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{
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// need to build a clean list of bones, too
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for (unsigned int i = 0;i < pcMesh->mNumBones;++i)
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{
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for (unsigned int a = 0; a < pcMesh->mBones[i]->mNumWeights;a++)
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{
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const aiVertexWeight& w = pcMesh->mBones[i]->mWeights[a];
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if(pcFace->mIndices[q] == w.mVertexId)
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{
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aiVertexWeight wNew;
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wNew.mVertexId = iIndex;
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wNew.mWeight = w.mWeight;
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newWeights[i].push_back(wNew);
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}
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}
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}
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pvPositions[iIndex] = pcMesh->mVertices[pcFace->mIndices[q]];
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if (pcMesh->HasNormals())
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{
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pvNormals[iIndex] = pcMesh->mNormals[pcFace->mIndices[q]];
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}
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if (pcMesh->HasTangentsAndBitangents())
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{
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pvTangents[iIndex] = pcMesh->mTangents[pcFace->mIndices[q]];
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pvBitangents[iIndex] = pcMesh->mBitangents[pcFace->mIndices[q]];
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}
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unsigned int p = 0;
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while (pcMesh->HasTextureCoords(p))
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{
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apvTextureCoords[p][iIndex] = pcMesh->mTextureCoords[p][pcFace->mIndices[q]];
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++p;
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}
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p = 0;
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while (pcMesh->HasVertexColors(p))
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{
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apvColorSets[p][iIndex] = pcMesh->mColors[p][pcFace->mIndices[q]];
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++p;
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}
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pcFace->mIndices[q] = iIndex;
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}
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}
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// build output vertex weights
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for (unsigned int i = 0;i < pcMesh->mNumBones;++i)
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{
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delete [] pcMesh->mBones[i]->mWeights;
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if (!newWeights[i].empty()) {
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pcMesh->mBones[i]->mWeights = new aiVertexWeight[newWeights[i].size()];
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aiVertexWeight *weightToCopy = &( newWeights[i][0] );
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memcpy(pcMesh->mBones[i]->mWeights, weightToCopy,
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sizeof(aiVertexWeight) * newWeights[i].size());
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} else {
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pcMesh->mBones[i]->mWeights = NULL;
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}
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}
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delete[] newWeights;
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// delete the old members
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delete[] pcMesh->mVertices;
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pcMesh->mVertices = pvPositions;
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p = 0;
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while (pcMesh->HasTextureCoords(p))
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{
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delete[] pcMesh->mTextureCoords[p];
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pcMesh->mTextureCoords[p] = apvTextureCoords[p];
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++p;
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}
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p = 0;
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while (pcMesh->HasVertexColors(p))
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{
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delete[] pcMesh->mColors[p];
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pcMesh->mColors[p] = apvColorSets[p];
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++p;
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}
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pcMesh->mNumVertices = iNumVerts;
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if (pcMesh->HasNormals())
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{
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delete[] pcMesh->mNormals;
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pcMesh->mNormals = pvNormals;
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}
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if (pcMesh->HasTangentsAndBitangents())
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{
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delete[] pcMesh->mTangents;
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pcMesh->mTangents = pvTangents;
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delete[] pcMesh->mBitangents;
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pcMesh->mBitangents = pvBitangents;
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}
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return (pcMesh->mNumVertices != iOldNumVertices);
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}
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// ------------------------------------------------------------------------------------------------
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bool IsMeshInVerboseFormat(const aiMesh* mesh) {
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// avoid slow vector<bool> specialization
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std::vector<unsigned int> seen(mesh->mNumVertices,0);
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for(unsigned int i = 0; i < mesh->mNumFaces; ++i) {
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const aiFace& f = mesh->mFaces[i];
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for(unsigned int j = 0; j < f.mNumIndices; ++j) {
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if(++seen[f.mIndices[j]] == 2) {
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// found a duplicate index
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return false;
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}
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}
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}
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return true;
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}
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// ------------------------------------------------------------------------------------------------
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bool MakeVerboseFormatProcess::IsVerboseFormat(const aiScene* pScene) {
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for(unsigned int i = 0; i < pScene->mNumMeshes; ++i) {
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if(!IsMeshInVerboseFormat(pScene->mMeshes[i])) {
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return false;
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}
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}
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return true;
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}
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