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Diffstat (limited to 'indra/newview/llreflectionmapmanager.h')
| -rw-r--r-- | indra/newview/llreflectionmapmanager.h | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/indra/newview/llreflectionmapmanager.h b/indra/newview/llreflectionmapmanager.h new file mode 100644 index 0000000000..5a3901cae9 --- /dev/null +++ b/indra/newview/llreflectionmapmanager.h @@ -0,0 +1,195 @@ +/** + * @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_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 + // vobj must not be null + // Guaranteed to not return null + LLReflectionMap* registerViewerObject(LLViewerObject* vobj); + + // reset all state on the next update + void reset(); + + // 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(); + + // True if currently updating a radiance map, false if currently updating an irradiance map + bool isRadiancePass() { return mRadiancePass; } + + // perform occlusion culling on all active reflection probes + void doOcclusion(); + +private: + friend class LLPipeline; + + // initialize mCubeFree array to default values + void initCubeFree(); + + // delete the probe with the given index in mProbes + void deleteProbe(U32 i); + + // get a free cube index + // returns -1 if allocation failed + 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; + + // list of free cubemap indices + std::list<S32> mCubeFree; + + // 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; + + // if true, we're generating the radiance map for the current probe, otherwise we're generating the irradiance map. + // Update sequence should be to generate the irradiance map from render of the world that has no irradiance, + // then generate the radiance map from a render of the world that includes irradiance. + // This should avoid feedback loops and ensure that the colors in the radiance maps match the colors in the environment. + bool mRadiancePass = false; + + // same as above, but for the realtime probe. + // Realtime probes should update all six sides of the irradiance map on "odd" frames and all six sides of the + // radiance map on "even" frames. + bool mRealtimeRadiancePass = false; + + 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 + U32 mReflectionProbeCount; + + // resolution of reflection probes + U32 mProbeResolution = 128; + + // maximum LoD of reflection probes (mip levels - 1) + F32 mMaxProbeLOD = 6.f; + + // amount to scale local lights during an irradiance map update (set during updateProbeFace and used by LLPipeline) + F32 mLightScale = 1.f; + + // if true, reset all probe render state on the next update (for teleports and sky changes) + bool mReset = false; +}; + |