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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();
// update this environment map
// resolution - size of cube map to generate
void update(U32 resolution, U32 face);
// return true if this probe should update *now*
bool shouldUpdate();
// Mark this reflection map as needing an update (resets last update time, so spamming this call will cause a cube map to never update)
void dirty();
// 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();
// 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);
// point at which environment map was last generated from (in agent space)
LLVector4a mOrigin;
// distance from viewer camera
F32 mDistance;
// 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
// 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)
U32 mPriority = 1;
bool mDirty = true;
};
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