TexturePtr TextureLoader::load( const std::string &name )
{
TexturesMap::const_iterator it = m_loadedTextures.find( name );
if( it!=m_loadedTextures.end() )
{
return it->second;
}
boost::filesystem::path path = m_searchPaths.find( name );
if( path.empty() )
{
IECore::msg( IECore::Msg::Error, "IECoreGL::TextureLoader::load", boost::format( "Couldn't find \"%s\"." ) % name );
m_loadedTextures[name] = 0; // to save us trying over and over again
return 0;
}
IECore::ReaderPtr r = IECore::Reader::create( path.string() );
if( !r )
{
IECore::msg( IECore::Msg::Error, "IECoreGL::TextureLoader::load", boost::format( "Couldn't create a Reader for \"%s\"." ) % path.string() );
m_loadedTextures[name] = 0; // to save us trying over and over again
return 0;
}
IECore::ObjectPtr o = r->read();
IECore::ImagePrimitivePtr i = IECore::runTimeCast<IECore::ImagePrimitive>( o );
if( !i )
{
IECore::msg( IECore::Msg::Error, "IECoreGL::TextureLoader::load", boost::format( "\"%s\" is not an image." ) % path.string() );
m_loadedTextures[name] = 0; // to save us trying over and over again
return 0;
}
TexturePtr t = 0;
try
{
ToGLTextureConverterPtr converter = new ToGLTextureConverter( i );
t = IECore::runTimeCast<Texture>( converter->convert() );
}
catch( const std::exception &e )
{
IECore::msg( IECore::Msg::Error, "IECoreGL::TextureLoader::load", boost::format( "Texture conversion failed for \"%s\" ( %s )." ) % path.string() % e.what() );
}
m_loadedTextures[name] = t;
return t;
}