35 lines
1.1 KiB
Text
35 lines
1.1 KiB
Text
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file renderEffect.I
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* @author drose
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* @date 2002-03-14
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*/
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/**
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* Provides an arbitrary ordering among all unique RenderEffects, so we can
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* store the essentially different ones in a big set and throw away the rest.
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*
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* This method is not needed outside of the RenderEffect class because all
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* equivalent RenderEffect objects are guaranteed to share the same pointer;
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* thus, a pointer comparison is always sufficient.
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*/
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INLINE int RenderEffect::
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compare_to(const RenderEffect &other) const {
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// First, we compare the types; if they are of different types then they
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// sort differently.
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TypeHandle type = get_type();
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TypeHandle other_type = other.get_type();
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if (type != other_type) {
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return type.get_index() - other_type.get_index();
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}
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// We only call compare_to_impl() if they have the same type.
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return compare_to_impl(&other);
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}
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