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diff --git a/indra/newview/llterrainpaintmap.h b/indra/newview/llterrainpaintmap.h
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+/**
+ * @file llterrainpaintmap.h
+ * @brief Utilities for managing terrain paint maps
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#pragma once
+
+class LLViewerRegion;
+class LLViewerTexture;
+
+class LLTerrainPaintMap
+{
+public:
+
+    // Convert a region's heightmap and composition into a paint map texture which
+    // approximates how the terrain would be rendered with the heightmap.
+    // In effect, this allows converting terrain of type TERRAIN_PAINT_TYPE_HEIGHTMAP_WITH_NOISE
+    // to type TERRAIN_PAINT_TYPE_PBR_PAINTMAP.
+    // Returns true if successful
+    static bool bakeHeightNoiseIntoPBRPaintMapRGB(const LLViewerRegion& region, LLViewerTexture& tex);
+};