public static void AddLoadingFromSession(this ShaderGeneratorContextBase context, Package package)
{
var previousGetAssetFriendlyName = context.GetAssetFriendlyName;
var previousFindAsset = context.FindAsset;
// Setup the GetAssetFriendlyName callback
context.GetAssetFriendlyName = runtimeAsset =>
{
string assetFriendlyName = null;
if (previousGetAssetFriendlyName != null)
{
assetFriendlyName = previousGetAssetFriendlyName(runtimeAsset);
}
if (string.IsNullOrEmpty(assetFriendlyName))
{
var referenceAsset = AttachedReferenceManager.GetAttachedReference(runtimeAsset);
assetFriendlyName = string.Format("{0}:{1}", referenceAsset.Id, referenceAsset.Url);
}
return assetFriendlyName;
};
// Setup the FindAsset callback
context.FindAsset = runtimeAsset =>
{
object newAsset = null;
if (previousFindAsset != null)
{
newAsset = previousFindAsset(runtimeAsset);
}
if (newAsset != null)
{
return newAsset;
}
var reference = AttachedReferenceManager.GetAttachedReference(runtimeAsset);
var assetItem = package.FindAsset(reference.Id) ?? package.FindAsset(reference.Url);
return assetItem?.Asset;
};
}
/// <summary>
/// Finds an asset from its attached reference.
/// It will first try by id, then location.
/// </summary>
/// <param name="package">The package.</param>
/// <param name="obj">The object containing the attached reference.</param>
/// <returns>An <see cref="AssetItem" /> or <c>null</c> if not found.</returns>
public static AssetItem FindAssetFromAttachedReference(this Package package, object obj)
{
if (obj == null)
{
return(null);
}
var attachedReference = AttachedReferenceManager.GetAttachedReference(obj);
return(attachedReference != null?package.FindAsset(attachedReference) : null);
}
/// <summary>
/// Finds an asset from all the packages by its asset reference.
/// It will first try by id, then location.
/// </summary>
/// <param name="package">The package.</param>
/// <param name="reference">The reference to the asset.</param>
/// <returns>An <see cref="AssetItem" /> or <c>null</c> if not found.</returns>
public static AssetItem FindAsset(this Package package, IReference reference)
{
return(package.FindAsset(reference.Id) ?? package.FindAsset(reference.Location));
}
