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OpenMW/components/resource/texturemanager.cpp

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#include "texturemanager.hpp"
#include <osgDB/Registry>
#include <stdexcept>
#include <components/vfs/manager.hpp>
namespace Resource
{
TextureManager::TextureManager(const VFS::Manager *vfs)
: mVFS(vfs)
{
}
/*
osg::ref_ptr<osg::Image> TextureManager::getImage(const std::string &filename)
{
}
*/
osg::ref_ptr<osg::Texture2D> TextureManager::getTexture2D(const std::string &filename, osg::Texture::WrapMode wrapS, osg::Texture::WrapMode wrapT)
{
std::string normalized = filename;
mVFS->normalizeFilename(normalized);
MapKey key = std::make_pair(std::make_pair(wrapS, wrapT), normalized);
std::map<MapKey, osg::ref_ptr<osg::Texture2D> >::iterator found = mTextures.find(key);
if (found != mTextures.end())
{
return found->second;
}
else
{
osg::ref_ptr<osgDB::Options> opts (new osgDB::Options);
opts->setOptionString("dds_dxt1_detect_rgba"); // tx_creature_werewolf.dds isn't loading in the correct format without this option
size_t extPos = normalized.find_last_of('.');
std::string ext;
if (extPos != std::string::npos && extPos+1 < normalized.size())
ext = normalized.substr(extPos+1);
osgDB::ReaderWriter* reader = osgDB::Registry::instance()->getReaderWriterForExtension(ext);
osgDB::ReaderWriter::ReadResult result = reader->readImage(*mVFS->get(normalized.c_str()), opts);
if (!result.success())
{
// TODO: use "notfound" default texture
throw std::runtime_error("Error loading");
//std::cerr << "Error loading " << filename << ": " << result.message() << std::endl;
}
osg::Image* image = result.getImage();
osg::ref_ptr<osg::Texture2D> texture(new osg::Texture2D);
texture->setImage(image);
texture->setWrap(osg::Texture::WRAP_S, wrapS);
texture->setWrap(osg::Texture::WRAP_T, wrapT);
// Can be enabled for single-context, i.e. in openmw
//texture->setUnRefImageDataAfterApply(true);
mTextures.insert(std::make_pair(key, texture));
return texture;
}
}
}