void AssetDownloadTask::downloadAssetFile() {
assert( !mAssetURI.empty() );
ResourceDownloadTaskPtr dl = ResourceDownloadTask::construct(
mAssetURI, mScene->transferPool(),
mPriority,
std::tr1::bind(&AssetDownloadTask::weakAssetFileDownloaded, getWeakPtr(), _1, _2)
);
mActiveDownloads[mAssetURI] = dl;
dl->start();
}
void AssetDownloadTask::handleAssetParsed(Mesh::MeshdataPtr md) {
mAsset = md;
if (!md) {
SILOG(ogre,error,"Failed to parse mesh " << mAssetURI.toString());
mCB();
return;
}
// This is a sanity check. There's no way Ogre can reasonably handle meshes
// that require a ton of draw calls. Estimate them here and if its too high,
// destroy the data and invoke the callback to make it look like failure.
{
// Draw calls =
// Number of instances * number of primitives in instance
uint32 draw_calls = 0;
Meshdata::GeometryInstanceIterator geoinst_it = md->getGeometryInstanceIterator();
uint32 geoinst_idx;
Matrix4x4f pos_xform;
while( geoinst_it.next(&geoinst_idx, &pos_xform) )
draw_calls += md->geometry[ md->instances[geoinst_idx].geometryIndex ].primitives.size();
// Arbitrary number, but probably more than we should even allow given
// that there are probably hundreds or thousands of other objects
if (draw_calls > 500) {
SILOG(ogre,error,"Excessively complicated mesh: " << mAssetURI.toString() << " has " << draw_calls << " draw calls. Ignoring this mesh.");
mAsset = Mesh::MeshdataPtr();
mCB();
return;
}
}
mRemainingDownloads = md->textures.size();
// Special case for no dependent downloads
if (mRemainingDownloads == 0) {
mCB();
return;
}
String assetURIString = mAssetURI.toString();
for(TextureList::const_iterator it = md->textures.begin(); it != md->textures.end(); it++) {
String texURIString = assetURIString.substr(0, assetURIString.rfind("/")+1) + (*it);
Transfer::URI texURI(texURIString);
ResourceDownloadTaskPtr dl = ResourceDownloadTask::construct(
texURI, mScene->transferPool(),
mPriority,
std::tr1::bind(&AssetDownloadTask::weakTextureDownloaded, getWeakPtr(), _1, _2)
);
mActiveDownloads[texURI] = dl;
dl->start();
}
}
void AssetDownloadTask::downloadAssetFile() {
assert( !mAssetURI.empty() );
boost::mutex::scoped_lock lok(mDependentDownloadMutex);
ResourceDownloadTaskPtr dl = ResourceDownloadTask::construct(
mAssetURI, mScene->transferPool(),
mPriority,
std::tr1::bind(&AssetDownloadTask::weakAssetFileDownloaded, getWeakPtr(), _1, _2, _3)
);
mActiveDownloads[dl->getIdentifier()] = dl;
dl->start();
}