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diff --git a/indra/newview/llreflectionmap.h b/indra/newview/llreflectionmap.h
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+/**
+ * @file llreflectionmap.h
+ * @brief LLReflectionMap class declaration
+ *
+ * $LicenseInfo:firstyear=2022&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2022, 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
+
+#include "llcubemaparray.h"
+#include "llmemory.h"
+
+class LLSpatialGroup;
+class LLViewerObject;
+
+class alignas(16) LLReflectionMap : public LLRefCount
+{
+    LL_ALIGN_NEW
+public:
+    // allocate an environment map of the given resolution 
+    LLReflectionMap();
+
+    ~LLReflectionMap();
+
+    // update this environment map
+    // resolution - size of cube map to generate
+    void update(U32 resolution, U32 face);
+
+    // for volume partition probes, try to place this probe in the best spot
+    void autoAdjustOrigin();
+
+    // return true if given Reflection Map's influence volume intersect's with this one's
+    bool intersects(LLReflectionMap* other);
+
+    // Get the ambiance value to use for this probe
+    F32 getAmbiance();
+
+    // Get the near clip plane distance to use for this probe
+    F32 getNearClip();
+
+    // Return true if this probe should include avatars in its reflection map
+    bool getIsDynamic();
+
+    // get the encoded bounding box of this probe's influence volume
+    // will only return a box if this probe is associated with a VOVolume
+    // with its reflection probe influence volume to to VOLUME_TYPE_BOX
+    // return false if no bounding box (treat as sphere influence volume)
+    bool getBox(LLMatrix4& box);
+
+    // return true if this probe is active for rendering
+    bool isActive();
+
+    // perform occlusion query/readback
+    void doOcclusion(const LLVector4a& eye);
+
+    // return false if this probe isn't currently relevant (for example, disabled due to graphics preferences)
+    bool isRelevant();
+
+    // point at which environment map was last generated from (in agent space)
+    LLVector4a mOrigin;
+    
+    // distance from main viewer camera
+    F32 mDistance = -1.f;
+
+    // Minimum and maximum depth in current render camera
+    F32 mMinDepth = -1.f;
+    F32 mMaxDepth = -1.f;
+
+    // radius of this probe's affected area
+    F32 mRadius = 16.f;
+
+    // last time this probe was updated (or when its update timer got reset)
+    F32 mLastUpdateTime = 0.f;
+
+    // last time this probe was bound for rendering
+    F32 mLastBindTime = 0.f;
+
+    // cube map used to sample this environment map
+    LLPointer<LLCubeMapArray> mCubeArray;
+    S32 mCubeIndex = -1; // index into cube map array or -1 if not currently stored in cube map array
+    
+    // probe has had at least one full update and is ready to render
+    bool mComplete = false;
+
+    // fade in parameter for this probe
+    F32 mFadeIn = 0.f;
+
+    // index into array packed by LLReflectionMapManager::getReflectionMaps
+    // WARNING -- only valid immediately after call to getReflectionMaps
+    S32 mProbeIndex = -1;
+
+    // set of any LLReflectionMaps that intersect this map (maintained by LLReflectionMapManager
+    std::vector<LLReflectionMap*> mNeighbors;
+
+    // spatial group this probe is tracking (if any)
+    LLSpatialGroup* mGroup = nullptr;
+
+    // viewer object this probe is tracking (if any)
+    LLViewerObject* mViewerObject = nullptr;
+
+    // what priority should this probe have (higher is higher priority)
+    // currently only 0 or 1
+    // 0 - automatic probe
+    // 1 - manual probe
+    U32 mPriority = 0;
+
+    // occlusion culling state
+    GLuint mOcclusionQuery = 0;
+    bool mOccluded = false;
+    U32 mOcclusionPendingFrames = 0;
+};
+