/// <summary>
/// Create a copy dependency between this handle, and another.
/// </summary>
/// <param name="other">The handle to create a copy dependency to</param>
/// <param name="copyToOther">True if a copy should be deferred to all of the other handle's dependencies</param>
public void CreateCopyDependency(TextureGroupHandle other, bool copyToOther = false)
{
// Does this dependency already exist?
foreach (TextureDependency existing in Dependencies)
{
if (existing.Other.Handle == other)
{
// Do not need to create it again. May need to set the dirty flag.
return;
}
}
_group.HasCopyDependencies = true;
other._group.HasCopyDependencies = true;
TextureDependency dependency = new TextureDependency(this);
TextureDependency otherDependency = new TextureDependency(other);
dependency.Other = otherDependency;
otherDependency.Other = dependency;
Dependencies.Add(dependency);
other.Dependencies.Add(otherDependency);
// Recursively create dependency:
// All of this handle's dependencies must depend on the other.
foreach (TextureDependency existing in Dependencies.ToArray())
{
if (existing != dependency && existing.Other.Handle != other)
{
existing.Other.Handle.CreateCopyDependency(other);
}
}
// All of the other handle's dependencies must depend on this.
foreach (TextureDependency existing in other.Dependencies.ToArray())
{
if (existing != otherDependency && existing.Other.Handle != this)
{
existing.Other.Handle.CreateCopyDependency(this);
if (copyToOther)
{
existing.Other.Handle.DeferCopy(this);
}
}
}
}
/// <summary>
/// Remove a dependency from this handle's dependency list.
/// </summary>
/// <param name="dependency">The dependency to remove</param>
public void RemoveDependency(TextureDependency dependency)
{
Dependencies.Remove(dependency);
}