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diff --git a/thirdparty/squish/colourset.h b/thirdparty/squish/colourset.h
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+/* -----------------------------------------------------------------------------
+
+	Copyright (c) 2006 Simon Brown                          si@sjbrown.co.uk
+
+	Permission is hereby granted, free of charge, to any person obtaining
+	a copy of this software and associated documentation files (the 
+	"Software"), to	deal in the Software without restriction, including
+	without limitation the rights to use, copy, modify, merge, publish,
+	distribute, sublicense, and/or sell copies of the Software, and to 
+	permit persons to whom the Software is furnished to do so, subject to 
+	the following conditions:
+
+	The above copyright notice and this permission notice shall be included
+	in all copies or substantial portions of the Software.
+
+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
+	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+	IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 
+	CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
+	TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 
+	SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+	
+   -------------------------------------------------------------------------- */
+   
+#ifndef SQUISH_COLOURSET_H
+#define SQUISH_COLOURSET_H
+
+#include <squish.h>
+#include "maths.h"
+
+namespace squish {
+
+/*! @brief Represents a set of block colours
+*/
+class ColourSet
+{
+public:
+	ColourSet( u8 const* rgba, int mask, int flags );
+
+	int GetCount() const { return m_count; }
+	Vec3 const* GetPoints() const { return m_points; }
+	float const* GetWeights() const { return m_weights; }
+	bool IsTransparent() const { return m_transparent; }
+
+	void RemapIndices( u8 const* source, u8* target ) const;
+
+private:
+	int m_count;
+	Vec3 m_points[16];
+	float m_weights[16];
+	int m_remap[16];
+	bool m_transparent;
+};
+
+} // namespace sqish
+
+#endif // ndef SQUISH_COLOURSET_H