1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/**
* @file llreflectionmapmanager.h
* @brief LLReflectionMapManager 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 "llreflectionmap.h"
#include "llrendertarget.h"
#include "llcubemaparray.h"
#include "llcubemap.h"
class LLSpatialGroup;
class LLViewerObject;
// number of reflection probes to keep in vram
#define LL_MAX_REFLECTION_PROBE_COUNT 256
// reflection probe resolution
#define LL_REFLECTION_PROBE_RESOLUTION 128
#define LL_IRRADIANCE_MAP_RESOLUTION 64
// reflection probe mininum scale
#define LL_REFLECTION_PROBE_MINIMUM_SCALE 1.f;
class alignas(16) LLReflectionMapManager
{
LL_ALIGN_NEW
public:
enum class DetailLevel
{
STATIC_ONLY = 0,
STATIC_AND_DYNAMIC,
REALTIME = 2
};
// allocate an environment map of the given resolution
LLReflectionMapManager();
// release any GL state
void cleanup();
// maintain reflection probes
void update();
// add a probe for the given spatial group
LLReflectionMap* addProbe(LLSpatialGroup* group = nullptr);
// Populate "maps" with the N most relevant Reflection Maps where N is no more than maps.size()
// If less than maps.size() ReflectionMaps are available, will assign trailing elements to nullptr.
// maps -- presized array of Reflection Map pointers
void getReflectionMaps(std::vector<LLReflectionMap*>& maps);
// called by LLSpatialGroup constructor
// If spatial group should receive a Reflection Probe, will create one for the specified spatial group
LLReflectionMap* registerSpatialGroup(LLSpatialGroup* group);
// presently hacked into LLViewerObject::setTE
// Used by LLViewerObjects that are Reflection Probes
// Guaranteed to not return null
LLReflectionMap* registerViewerObject(LLViewerObject* vobj);
// force an update of all probes
void rebuild();
// called on region crossing to "shift" probes into new coordinate frame
void shift(const LLVector4a& offset);
// debug display, called from llspatialpartition if reflection
// probe debug display is active
void renderDebug();
// call once at startup to allocate cubemap arrays
void initReflectionMaps();
private:
friend class LLPipeline;
// delete the probe with the given index in mProbes
void deleteProbe(U32 i);
// get a free cube index
// if no cube indices are free, free one starting from the back of the probe list
S32 allocateCubeIndex();
// update the neighbors of the given probe
void updateNeighbors(LLReflectionMap* probe);
// update UBO used for rendering (call only once per render pipe flush)
void updateUniforms();
// bind UBO used for rendering
void setUniforms();
// render target for cube snapshots
// used to generate mipmaps without doing a copy-to-texture
LLRenderTarget mRenderTarget;
std::vector<LLRenderTarget> mMipChain;
// storage for reflection probe radiance maps (plus two scratch space cubemaps)
LLPointer<LLCubeMapArray> mTexture;
// vertex buffer for pushing verts to filter shaders
LLPointer<LLVertexBuffer> mVertexBuffer;
// storage for reflection probe irradiance maps
LLPointer<LLCubeMapArray> mIrradianceMaps;
// array indicating if a particular cubemap is free
bool mCubeFree[LL_MAX_REFLECTION_PROBE_COUNT];
// start tracking the given spatial group
void trackGroup(LLSpatialGroup* group);
// perform an update on the currently updating Probe
void doProbeUpdate();
// update the specified face of the specified probe
void updateProbeFace(LLReflectionMap* probe, U32 face);
// list of active reflection maps
std::vector<LLPointer<LLReflectionMap> > mProbes;
// list of reflection maps to kill
std::vector<LLPointer<LLReflectionMap> > mKillList;
// list of reflection maps to create
std::vector<LLPointer<LLReflectionMap> > mCreateList;
// handle to UBO
U32 mUBO = 0;
// list of maps being used for rendering
std::vector<LLReflectionMap*> mReflectionMaps;
LLReflectionMap* mUpdatingProbe = nullptr;
U32 mUpdatingFace = 0;
LLPointer<LLReflectionMap> mDefaultProbe; // default reflection probe to fall back to for pixels with no probe influences (should always be at cube index 0)
// number of reflection probes to use for rendering (based on saved setting RenderReflectionProbeCount)
U32 mReflectionProbeCount;
};
|
