void ObjLoader::LoadAssimp( const std::string &FileName )
{
auto t0 = std::chrono::high_resolution_clock::now();
Assimp::Importer Importer;
const aiScene *scene = Importer.ReadFile( FileName,
aiProcessPreset_TargetRealtime_Quality );
if( !scene )
{
std::cout << "ASSIMP cos poszlo nie tak\n";
std::cout << "ASSIMP ERROR: " << Importer.GetErrorString() << std::endl;
}
//w petli przez wszystkie meshe
const aiMesh * mesh = scene->mMeshes[0];
for( uint t = 0; t < mesh->mNumFaces ; t++ )
{
const aiFace *face = &mesh->mFaces[ t ] ;
mGpuIndices.push_back( face->mIndices[ 0 ] );
mGpuIndices.push_back( face->mIndices[ 1 ] );
mGpuIndices.push_back( face->mIndices[ 2 ] );
}
// verteksy
if( mesh->HasPositions() )
{
mVertex.resize( mesh->mNumVertices );
memcpy( &mVertex[0], mesh->mVertices, 3*4* mesh->mNumVertices );
}
if( mesh->HasNormals() )
{
mNormals.resize( mesh->mNumVertices );
memcpy( &mNormals[0], mesh->mNormals, 3*4* mesh->mNumVertices );
}
if( mesh->HasTextureCoords(0) )
{
for( uint k = 0; k < mesh->mNumVertices; ++k )
{
glm::vec2 tmp;
tmp.x = mesh->mTextureCoords[0][k].x;
tmp.y = mesh->mTextureCoords[0][k].y;
mTexcoords.push_back( tmp );
}
}
mGpuBuffer.resize( mesh->mNumVertices*8);
for( uint i = 0; i < mesh->mNumVertices; ++i )
{
mGpuBuffer[ i*8 ] = mVertex[ i ].x;
mGpuBuffer[ i*8 +1 ] = mVertex[ i ].y;
mGpuBuffer[ i*8 +2] = mVertex[ i ].z;
mGpuBuffer[ i*8 +3] = mNormals[ i ].x;
mGpuBuffer[ i*8 +4] = mNormals[ i ].y;
mGpuBuffer[ i*8 +5] = mNormals[ i ].z;
if( mesh->HasTextureCoords(0) ) {
mGpuBuffer[i * 8 + 6] = mTexcoords[i].s;
mGpuBuffer[i * 8 + 7] = mTexcoords[i].t;
}
}
auto t1 = std::chrono::high_resolution_clock::now();
std::chrono::milliseconds total_ms = std::chrono::duration_cast<std::chrono::milliseconds>(t1 - t0);
std::cout << "Time: " << total_ms.count() << " ms " << std::endl;
Surface *pSurface = new Surface();
VertexBufferManager &VBOMan = VertexBufferManager::GetSingleton();
IndexBuffer *pIndex = VBOMan.CreateIndexBuffer();
pIndex->SetIndexData( mGpuIndices );
pIndex->Prepare();
VertexDeclaration *pDecl = VBOMan.GetVertexDeclaration( "Default" );
VertexSettings( PT_TRIANGLE, UT_STATIC_DRAW, pIndex, pDecl );
VertexBuffer *pVertex = VBOMan.CreateVertexBuffer(
VertexSettings( PT_TRIANGLE, UT_STATIC_DRAW, pIndex, pDecl ) );
pVertex->SetVertexData( mGpuBuffer );
pVertex->Prepare();
pSurface->SetVertexBuffer( pVertex );
mSurfaces.push_back( pSurface );
}
