diff options
Diffstat (limited to 'src/3rdparty/assimp/code/RemoveRedundantMaterials.cpp')
| -rw-r--r-- | src/3rdparty/assimp/code/RemoveRedundantMaterials.cpp | 291 |
1 files changed, 147 insertions, 144 deletions
diff --git a/src/3rdparty/assimp/code/RemoveRedundantMaterials.cpp b/src/3rdparty/assimp/code/RemoveRedundantMaterials.cpp index 9a93f150c..a3e61ae8d 100644 --- a/src/3rdparty/assimp/code/RemoveRedundantMaterials.cpp +++ b/src/3rdparty/assimp/code/RemoveRedundantMaterials.cpp @@ -3,12 +3,12 @@ Open Asset Import Library (assimp) --------------------------------------------------------------------------- -Copyright (c) 2006-2012, assimp team +Copyright (c) 2006-2016, assimp team All rights reserved. -Redistribution and use of this software in source and binary forms, -with or without modification, are permitted provided that the following +Redistribution and use of this software in source and binary forms, +with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above @@ -25,189 +25,192 @@ conditions are met: derived from this software without specific prior written permission of the assimp team. -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. --------------------------------------------------------------------------- */ /** @file RemoveRedundantMaterials.cpp - * @brief Implementation of the "RemoveRedundantMaterials" post processing step + * @brief Implementation of the "RemoveRedundantMaterials" post processing step */ // internal headers -#include "AssimpPCH.h" + #include "RemoveRedundantMaterials.h" #include "ParsingUtils.h" #include "ProcessHelper.h" #include "MaterialSystem.h" +#include <stdio.h> using namespace Assimp; // ------------------------------------------------------------------------------------------------ // Constructor to be privately used by Importer RemoveRedundantMatsProcess::RemoveRedundantMatsProcess() -{ - // nothing to do here +: configFixedMaterials() { + // nothing to do here } // ------------------------------------------------------------------------------------------------ // Destructor, private as well RemoveRedundantMatsProcess::~RemoveRedundantMatsProcess() { - // nothing to do here + // nothing to do here } // ------------------------------------------------------------------------------------------------ // Returns whether the processing step is present in the given flag field. bool RemoveRedundantMatsProcess::IsActive( unsigned int pFlags) const { - return (pFlags & aiProcess_RemoveRedundantMaterials) != 0; + return (pFlags & aiProcess_RemoveRedundantMaterials) != 0; } // ------------------------------------------------------------------------------------------------ // Setup import properties void RemoveRedundantMatsProcess::SetupProperties(const Importer* pImp) { - // Get value of AI_CONFIG_PP_RRM_EXCLUDE_LIST - configFixedMaterials = pImp->GetPropertyString(AI_CONFIG_PP_RRM_EXCLUDE_LIST,""); + // Get value of AI_CONFIG_PP_RRM_EXCLUDE_LIST + configFixedMaterials = pImp->GetPropertyString(AI_CONFIG_PP_RRM_EXCLUDE_LIST,""); } // ------------------------------------------------------------------------------------------------ // Executes the post processing step on the given imported data. void RemoveRedundantMatsProcess::Execute( aiScene* pScene) { - DefaultLogger::get()->debug("RemoveRedundantMatsProcess begin"); - - unsigned int redundantRemoved = 0, unreferencedRemoved = 0; - if (pScene->mNumMaterials) - { - // Find out which materials are referenced by meshes - std::vector<bool> abReferenced(pScene->mNumMaterials,false); - for (unsigned int i = 0;i < pScene->mNumMeshes;++i) - abReferenced[pScene->mMeshes[i]->mMaterialIndex] = true; - - // If a list of materials to be excluded was given, match the list with - // our imported materials and 'salt' all positive matches to ensure that - // we get unique hashes later. - if (configFixedMaterials.length()) { - - std::list<std::string> strings; - ConvertListToStrings(configFixedMaterials,strings); - - for (unsigned int i = 0; i < pScene->mNumMaterials;++i) { - aiMaterial* mat = pScene->mMaterials[i]; - - aiString name; - mat->Get(AI_MATKEY_NAME,name); - - if (name.length) { - std::list<std::string>::const_iterator it = std::find(strings.begin(), strings.end(), name.data); - if (it != strings.end()) { - - // Our brilliant 'salt': A single material property with ~ as first - // character to mark it as internal and temporary. - const int dummy = 1; - ((aiMaterial*)mat)->AddProperty(&dummy,1,"~RRM.UniqueMaterial",0,0); - - // Keep this material even if no mesh references it - abReferenced[i] = true; - DefaultLogger::get()->debug(std::string("Found positive match in exclusion list: \'") + name.data + "\'"); - } - } - } - } - - // TODO: reimplement this algorithm to work in-place - unsigned int* aiMappingTable = new unsigned int[pScene->mNumMaterials]; - unsigned int iNewNum = 0; - - // Iterate through all materials and calculate a hash for them - // store all hashes in a list and so a quick search whether - // we do already have a specific hash. This allows us to - // determine which materials are identical. - uint32_t* aiHashes; - aiHashes = new uint32_t[pScene->mNumMaterials]; - for (unsigned int i = 0; i < pScene->mNumMaterials;++i) - { - // No mesh is referencing this material, remove it. - if (!abReferenced[i]) { - ++unreferencedRemoved; - delete pScene->mMaterials[i]; - continue; - } - - // Check all previously mapped materials for a matching hash. - // On a match we can delete this material and just make it ref to the same index. - uint32_t me = aiHashes[i] = ComputeMaterialHash(pScene->mMaterials[i]); - for (unsigned int a = 0; a < i;++a) - { - if (abReferenced[a] && me == aiHashes[a]) { - ++redundantRemoved; - me = 0; - aiMappingTable[i] = aiMappingTable[a]; - delete pScene->mMaterials[i]; - break; - } - } - // This is a new material that is referenced, add to the map. - if (me) { - aiMappingTable[i] = iNewNum++; - } - } - // If the new material count differs from the original, - // we need to rebuild the material list and remap mesh material indexes. - if (iNewNum != pScene->mNumMaterials) { - aiMaterial** ppcMaterials = new aiMaterial*[iNewNum]; - ::memset(ppcMaterials,0,sizeof(void*)*iNewNum); - for (unsigned int p = 0; p < pScene->mNumMaterials;++p) - { - // if the material is not referenced ... remove it - if (!abReferenced[p]) { - continue; - } - - // generate new names for all modified materials - const unsigned int idx = aiMappingTable[p]; - if (ppcMaterials[idx]) - { - aiString sz; - sz.length = ::sprintf(sz.data,"JoinedMaterial_#%i",p); - ((aiMaterial*)ppcMaterials[idx])->AddProperty(&sz,AI_MATKEY_NAME); - } - else - ppcMaterials[idx] = pScene->mMaterials[p]; - } - // update all material indices - for (unsigned int p = 0; p < pScene->mNumMeshes;++p) { - aiMesh* mesh = pScene->mMeshes[p]; - mesh->mMaterialIndex = aiMappingTable[mesh->mMaterialIndex]; - } - // delete the old material list - delete[] pScene->mMaterials; - pScene->mMaterials = ppcMaterials; - pScene->mNumMaterials = iNewNum; - } - // delete temporary storage - delete[] aiHashes; - delete[] aiMappingTable; - } - if (redundantRemoved == 0 && unreferencedRemoved == 0) - { - DefaultLogger::get()->debug("RemoveRedundantMatsProcess finished "); - } - else - { - char szBuffer[128]; // should be sufficiently large - ::sprintf(szBuffer,"RemoveRedundantMatsProcess finished. Removed %i redundant and %i unused materials.", - redundantRemoved,unreferencedRemoved); - DefaultLogger::get()->info(szBuffer); - } + DefaultLogger::get()->debug("RemoveRedundantMatsProcess begin"); + + unsigned int redundantRemoved = 0, unreferencedRemoved = 0; + if (pScene->mNumMaterials) + { + // Find out which materials are referenced by meshes + std::vector<bool> abReferenced(pScene->mNumMaterials,false); + for (unsigned int i = 0;i < pScene->mNumMeshes;++i) + abReferenced[pScene->mMeshes[i]->mMaterialIndex] = true; + + // If a list of materials to be excluded was given, match the list with + // our imported materials and 'salt' all positive matches to ensure that + // we get unique hashes later. + if (configFixedMaterials.length()) { + + std::list<std::string> strings; + ConvertListToStrings(configFixedMaterials,strings); + + for (unsigned int i = 0; i < pScene->mNumMaterials;++i) { + aiMaterial* mat = pScene->mMaterials[i]; + + aiString name; + mat->Get(AI_MATKEY_NAME,name); + + if (name.length) { + std::list<std::string>::const_iterator it = std::find(strings.begin(), strings.end(), name.data); + if (it != strings.end()) { + + // Our brilliant 'salt': A single material property with ~ as first + // character to mark it as internal and temporary. + const int dummy = 1; + ((aiMaterial*)mat)->AddProperty(&dummy,1,"~RRM.UniqueMaterial",0,0); + + // Keep this material even if no mesh references it + abReferenced[i] = true; + DefaultLogger::get()->debug(std::string("Found positive match in exclusion list: \'") + name.data + "\'"); + } + } + } + } + + // TODO: re-implement this algorithm to work in-place + unsigned int *aiMappingTable = new unsigned int[pScene->mNumMaterials]; + for ( unsigned int i=0; i<pScene->mNumMaterials; i++ ) { + aiMappingTable[ i ] = 0; + } + unsigned int iNewNum = 0; + + // Iterate through all materials and calculate a hash for them + // store all hashes in a list and so a quick search whether + // we do already have a specific hash. This allows us to + // determine which materials are identical. + uint32_t *aiHashes = new uint32_t[ pScene->mNumMaterials ];; + for (unsigned int i = 0; i < pScene->mNumMaterials;++i) + { + // No mesh is referencing this material, remove it. + if (!abReferenced[i]) { + ++unreferencedRemoved; + delete pScene->mMaterials[i]; + continue; + } + + // Check all previously mapped materials for a matching hash. + // On a match we can delete this material and just make it ref to the same index. + uint32_t me = aiHashes[i] = ComputeMaterialHash(pScene->mMaterials[i]); + for (unsigned int a = 0; a < i;++a) + { + if (abReferenced[a] && me == aiHashes[a]) { + ++redundantRemoved; + me = 0; + aiMappingTable[i] = aiMappingTable[a]; + delete pScene->mMaterials[i]; + break; + } + } + // This is a new material that is referenced, add to the map. + if (me) { + aiMappingTable[i] = iNewNum++; + } + } + // If the new material count differs from the original, + // we need to rebuild the material list and remap mesh material indexes. + if (iNewNum != pScene->mNumMaterials) { + aiMaterial** ppcMaterials = new aiMaterial*[iNewNum]; + ::memset(ppcMaterials,0,sizeof(void*)*iNewNum); + for (unsigned int p = 0; p < pScene->mNumMaterials;++p) + { + // if the material is not referenced ... remove it + if (!abReferenced[p]) { + continue; + } + + // generate new names for all modified materials + const unsigned int idx = aiMappingTable[p]; + if (ppcMaterials[idx]) { + aiString sz; + sz.length = ::ai_snprintf(sz.data,MAXLEN,"JoinedMaterial_#%u",p); + ((aiMaterial*)ppcMaterials[idx])->AddProperty(&sz,AI_MATKEY_NAME); + } else { + ppcMaterials[idx] = pScene->mMaterials[p]; + } + } + // update all material indices + for (unsigned int p = 0; p < pScene->mNumMeshes;++p) { + aiMesh* mesh = pScene->mMeshes[p]; + ai_assert( NULL!=mesh ); + mesh->mMaterialIndex = aiMappingTable[mesh->mMaterialIndex]; + } + // delete the old material list + delete[] pScene->mMaterials; + pScene->mMaterials = ppcMaterials; + pScene->mNumMaterials = iNewNum; + } + // delete temporary storage + delete[] aiHashes; + delete[] aiMappingTable; + } + if (redundantRemoved == 0 && unreferencedRemoved == 0) + { + DefaultLogger::get()->debug("RemoveRedundantMatsProcess finished "); + } + else + { + char szBuffer[128]; // should be sufficiently large + ::ai_snprintf(szBuffer,128,"RemoveRedundantMatsProcess finished. Removed %u redundant and %u unused materials.", + redundantRemoved,unreferencedRemoved); + DefaultLogger::get()->info(szBuffer); + } } |