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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:
enum class ProbeType
{
ALL = 0,
RADIANCE,
IRRADIANCE,
REFLECTION
};
// 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, bool force_dynamic = false, F32 near_clip = -1.f);
// 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;
ProbeType mType;
};
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