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Diffstat (limited to 'src/3rdparty/assimp/code/RemoveRedundantMaterials.cpp')
| -rw-r--r-- | src/3rdparty/assimp/code/RemoveRedundantMaterials.cpp | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/src/3rdparty/assimp/code/RemoveRedundantMaterials.cpp b/src/3rdparty/assimp/code/RemoveRedundantMaterials.cpp deleted file mode 100644 index c6319f892..000000000 --- a/src/3rdparty/assimp/code/RemoveRedundantMaterials.cpp +++ /dev/null @@ -1,222 +0,0 @@ -/* ---------------------------------------------------------------------------- -Open Asset Import Library (assimp) ---------------------------------------------------------------------------- - -Copyright (c) 2006-2017, 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 -conditions are met: - -* Redistributions of source code must retain the above - copyright notice, this list of conditions and the - following disclaimer. - -* Redistributions in binary form must reproduce the above - copyright notice, this list of conditions and the - following disclaimer in the documentation and/or other - materials provided with the distribution. - -* Neither the name of the assimp team, nor the names of its - contributors may be used to endorse or promote products - 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 -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -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 -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 -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ---------------------------------------------------------------------------- -*/ -/** @file RemoveRedundantMaterials.cpp - * @brief Implementation of the "RemoveRedundantMaterials" post processing step -*/ - -// internal headers - -#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() -: configFixedMaterials() { - // nothing to do here -} - -// ------------------------------------------------------------------------------------------------ -// Destructor, private as well -RemoveRedundantMatsProcess::~RemoveRedundantMatsProcess() -{ - // 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; -} - -// ------------------------------------------------------------------------------------------------ -// 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,""); -} - -// ------------------------------------------------------------------------------------------------ -// 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: 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]; - pScene->mMaterials[i] = nullptr; - 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]; - pScene->mMaterials[i] = nullptr; - 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) { - ai_assert(iNewNum > 0); - 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 modified materials that had no names - const unsigned int idx = aiMappingTable[p]; - if (ppcMaterials[idx]) { - aiString sz; - if( ppcMaterials[idx]->Get(AI_MATKEY_NAME, sz) != AI_SUCCESS ) { - 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); - } -} |