/// <summary>
/// Installs the specified r2d to the specified export. Specify an asset name if you wish to use a specific asset in the RTexture2D object.
/// </summary>
/// <param name="r2d"></param>
/// <param name="export"></param>
/// <param name="asset"></param>
public static void InstallTexture(RTexture2D r2d, ExportEntry export, string asset = null)
{
// If no asset was specified pick a random asset
asset ??= r2d.FetchRandomTextureAsset();
// 2. Is this asset already parsed?
if (r2d.InstantiatedItems.TryGetValue(asset, out var instantiated))
{
// It's already been instantiated. Just use this data instead
MERLog.Information($@"Writing out cached asset {asset} for {export.InstancedFullPath}");
export.WritePropertiesAndBinary(instantiated.props, instantiated.texData);
}
else
{
MERLog.Information($@"Installing texture asset {asset} for {export.InstancedFullPath}");
// 3. Asset has not been setup yet. Write out the precomputed data.
export.WriteBinary(GetTextureAssetBinary(asset));
// 4. Read in the data so it's in the correct context.
var ut2d = ObjectBinary.From <UTexture2D>(export);
// 5. Move compressed mips to TFC
foreach (var mip in ut2d.Mips)
{
if (mip.IsCompressed)
{
mip.DataOffset = TFCBuilder.WriteMip(r2d, mip.Mip); // If it's compressed it needs to be stored externally.
if (mip.StorageType == StorageTypes.pccLZO)
{
mip.StorageType = StorageTypes.extLZO;
}
if (mip.StorageType == StorageTypes.pccZlib)
{
mip.StorageType = StorageTypes.extZlib;
}
}
}
// 6. Setup the properties
var props = export.GetProperties();
props.AddOrReplaceProp(new IntProperty(ut2d.Mips.Count - 1, @"MipTailBaseIdx"));
props.AddOrReplaceProp(new IntProperty(ut2d.Mips[0].SizeX, @"SizeX"));
props.AddOrReplaceProp(new IntProperty(ut2d.Mips[0].SizeY, @"SizeY"));
props.AddOrReplaceProp(r2d.PreMountTexture ? ActiveBuilder.BGTFCNameProp : ActiveBuilder.DLCTFCNameProp);
props.AddOrReplaceProp(r2d.PreMountTexture ? ActiveBuilder.BGTFCGuidProp : ActiveBuilder.DLCTFCGuidProp);
if (r2d.LODGroup != null)
{
// Write a new LOD property
props.AddOrReplaceProp(r2d.LODGroup);
}
// 7. Commit the export
export.WritePropertiesAndBinary(props, ut2d);
// 8. Cache the work that's been done so we don't need to it again.
r2d.InstantiatedItems[asset] = (props, ut2d);
}
}
private static int WriteMip(RTexture2D tex, byte[] mipBytes)
{
// Only one thread is allowed to write a mip at a time.
lock (syncLock)
{
if (tex.PreMountTexture)
{
var startOffset = (int)ActiveBuilder.BGTfcStream.Position;
ActiveBuilder.BGTfcStream.Write(mipBytes);
return(startOffset);
}
else
{
var startOffset = (int)ActiveBuilder.DLCTfcStream.Position;
ActiveBuilder.DLCTfcStream.Write(mipBytes);
return(startOffset);
}
}
}
