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diff --git a/dep/g3dlite/G3D/BumpMapPreprocess.h b/dep/g3dlite/G3D/BumpMapPreprocess.h
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+/**
+  \file BumpMapPreprocess.h
+
+  \maintainer Morgan McGuire, http://graphics.cs.williams.edu
+
+  \created 2010-01-28
+  \edited  2010-01-28
+
+  Copyright 2000-2010, Morgan McGuire.
+  All rights reserved.
+ */
+
+#ifndef G3D_BumpMapPreprocess_h
+#define G3D_BumpMapPreprocess_h
+
+#include "G3D/platform.h"
+
+namespace G3D {
+class Any;
+
+/** 
+Not in the BumpMap class to avoid a circular dependency between Texture and BumpMap.
+G3D::GImage::computeNormalMap().
+*/
+class BumpMapPreprocess {
+public:
+
+    /** If true, the elevations are box filtered after computing normals
+     and before uploading, which produces better results for parallax offset mapping
+     Defaults to false. */
+    bool            lowPassFilter;
+
+    /** Height of the maximum ("white") value, in pixels, for the purpose of computing normals.
+       A value of 255 means that a 255 x 255 bump image with a full black-to-white gradient
+         will produce a 45-degree ramp (this also results in "cubic" voxels).
+         A negative value means to set zExtentPixels to -zExtentPixels * max(width, height).
+         The default is -0.02.
+     */
+    float           zExtentPixels;
+
+    /** After computing normals, scale the height by |N.z|, a trick that reduces texture swim in steep areas for parallax offset 
+      mapping. Defaults to false.*/
+    bool            scaleZByNz;
+
+    BumpMapPreprocess() : lowPassFilter(false), zExtentPixels(-0.02f), scaleZByNz(false) {}
+
+    BumpMapPreprocess(const Any& any);
+
+    operator Any() const;
+
+    bool operator==(const BumpMapPreprocess& other) const {
+        return 
+            (lowPassFilter == other.lowPassFilter) &&
+            (zExtentPixels == other.zExtentPixels) &&
+            (scaleZByNz == other.scaleZByNz);
+    }
+};
+
+}
+
+#endif