/** * @file llspatialpartition.h * @brief LLSpatialGroup header file including definitions for supporting functions * * $LicenseInfo:firstyear=2003&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, 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 * $/LicenseInfo$ */ #ifndef LL_LLSPATIALPARTITION_H #define LL_LLSPATIALPARTITION_H #define SG_MIN_DIST_RATIO 0.00001f #include "lldrawable.h" #include "lloctree.h" #include "llpointer.h" #include "llrefcount.h" #include "llvertexbuffer.h" #include "llgltypes.h" #include "llcubemap.h" #include "lldrawpool.h" #include "llface.h" #include "llviewercamera.h" #include "llvector4a.h" #include #define SG_STATE_INHERIT_MASK (OCCLUDED) #define SG_INITIAL_STATE_MASK (DIRTY | GEOM_DIRTY) class LLSpatialPartition; class LLSpatialBridge; class LLSpatialGroup; class LLTextureAtlas; class LLTextureAtlasSlot; S32 AABBSphereIntersect(const LLVector4a& min, const LLVector4a& max, const LLVector3 &origin, const F32 &rad); S32 AABBSphereIntersectR2(const LLVector4a& min, const LLVector4a& max, const LLVector3 &origin, const F32 &radius_squared); S32 AABBSphereIntersect(const LLVector3& min, const LLVector3& max, const LLVector3 &origin, const F32 &rad); S32 AABBSphereIntersectR2(const LLVector3& min, const LLVector3& max, const LLVector3 &origin, const F32 &radius_squared); void pushVerts(LLFace* face, U32 mask); // get index buffer for binary encoded axis vertex buffer given a box at center being viewed by given camera U8* get_box_fan_indices(LLCamera* camera, const LLVector4a& center); class LLDrawInfo : public LLRefCount { protected: ~LLDrawInfo(); public: LLDrawInfo(const LLDrawInfo& rhs) { *this = rhs; } const LLDrawInfo& operator=(const LLDrawInfo& rhs) { llerrs << "Illegal operation!" << llendl; return *this; } LLDrawInfo(U16 start, U16 end, U32 count, U32 offset, LLViewerTexture* image, LLVertexBuffer* buffer, BOOL fullbright = FALSE, U8 bump = 0, BOOL particle = FALSE, F32 part_size = 0); void validate(); LLVector4a mExtents[2]; LLPointer mVertexBuffer; LLPointer mTexture; LLColor4U mGlowColor; S32 mDebugColor; const LLMatrix4* mTextureMatrix; const LLMatrix4* mModelMatrix; U16 mStart; U16 mEnd; U32 mCount; U32 mOffset; BOOL mFullbright; U8 mBump; BOOL mParticle; F32 mPartSize; F32 mVSize; LLSpatialGroup* mGroup; LLFace* mFace; //associated face F32 mDistance; U32 mDrawMode; struct CompareTexture { bool operator()(const LLDrawInfo& lhs, const LLDrawInfo& rhs) { return lhs.mTexture > rhs.mTexture; } }; struct CompareTexturePtr { //sort by texture bool operator()(const LLPointer& lhs, const LLPointer& rhs) { // sort by pointer, sort NULL down to the end return lhs.get() != rhs.get() && (lhs.isNull() || (rhs.notNull() && lhs->mTexture.get() > rhs->mTexture.get())); } }; struct CompareVertexBuffer { //sort by texture bool operator()(const LLPointer& lhs, const LLPointer& rhs) { // sort by pointer, sort NULL down to the end return lhs.get() != rhs.get() && (lhs.isNull() || (rhs.notNull() && lhs->mVertexBuffer.get() > rhs->mVertexBuffer.get())); } }; struct CompareTexturePtrMatrix { bool operator()(const LLPointer& lhs, const LLPointer& rhs) { return lhs.get() != rhs.get() && (lhs.isNull() || (rhs.notNull() && (lhs->mTexture.get() > rhs->mTexture.get() || (lhs->mTexture.get() == rhs->mTexture.get() && lhs->mModelMatrix > rhs->mModelMatrix)))); } }; struct CompareBump { bool operator()(const LLPointer& lhs, const LLPointer& rhs) { // sort by mBump value, sort NULL down to the end return lhs.get() != rhs.get() && (lhs.isNull() || (rhs.notNull() && lhs->mBump > rhs->mBump)); } }; struct CompareDistanceGreater { bool operator()(const LLPointer& lhs, const LLPointer& rhs) { // sort by mBump value, sort NULL down to the end return lhs.get() != rhs.get() && (lhs.isNull() || (rhs.notNull() && lhs->mDistance > rhs->mDistance)); } }; }; LL_ALIGN_PREFIX(64) class LLSpatialGroup : public LLOctreeListener { friend class LLSpatialPartition; friend class LLOctreeStateCheck; public: LLSpatialGroup(const LLSpatialGroup& rhs) { *this = rhs; } const LLSpatialGroup& operator=(const LLSpatialGroup& rhs) { llerrs << "Illegal operation!" << llendl; return *this; } static U32 sNodeCount; static BOOL sNoDelete; //deletion of spatial groups and draw info not allowed if TRUE typedef std::vector > sg_vector_t; typedef std::vector > bridge_list_t; typedef std::vector > drawmap_elem_t; typedef std::map draw_map_t; typedef std::vector > buffer_list_t; typedef std::map, buffer_list_t> buffer_texture_map_t; typedef std::map buffer_map_t; typedef LLOctreeListener BaseType; typedef LLOctreeListener OctreeListener; typedef LLTreeNode TreeNode; typedef LLOctreeNode OctreeNode; typedef LLOctreeRoot OctreeRoot; typedef LLOctreeTraveler OctreeTraveler; typedef LLOctreeNode::element_iter element_iter; typedef LLOctreeNode::element_list element_list; struct CompareDistanceGreater { bool operator()(const LLSpatialGroup* const& lhs, const LLSpatialGroup* const& rhs) { return lhs->mDistance > rhs->mDistance; } }; struct CompareUpdateUrgency { bool operator()(const LLPointer lhs, const LLPointer rhs) { return lhs->getUpdateUrgency() > rhs->getUpdateUrgency(); } }; struct CompareDepthGreater { bool operator()(const LLSpatialGroup* const& lhs, const LLSpatialGroup* const& rhs) { return lhs->mDepth > rhs->mDepth; } }; typedef enum { OCCLUDED = 0x00010000, QUERY_PENDING = 0x00020000, ACTIVE_OCCLUSION = 0x00040000, DISCARD_QUERY = 0x00080000, EARLY_FAIL = 0x00100000, } eOcclusionState; typedef enum { DEAD = 0x00000001, DIRTY = 0x00000002, OBJECT_DIRTY = 0x00000004, GEOM_DIRTY = 0x00000008, ALPHA_DIRTY = 0x00000010, SKIP_FRUSTUM_CHECK = 0x00000020, IN_IMAGE_QUEUE = 0x00000040, IMAGE_DIRTY = 0x00000080, OCCLUSION_DIRTY = 0x00000100, MESH_DIRTY = 0x00000200, NEW_DRAWINFO = 0x00000400, IN_BUILD_Q1 = 0x00000800, IN_BUILD_Q2 = 0x00001000, STATE_MASK = 0x0000FFFF, } eSpatialState; typedef enum { STATE_MODE_SINGLE = 0, //set one node STATE_MODE_BRANCH, //set entire branch STATE_MODE_DIFF, //set entire branch as long as current state is different STATE_MODE_ALL_CAMERAS, //used for occlusion state, set state for all cameras } eSetStateMode; LLSpatialGroup(OctreeNode* node, LLSpatialPartition* part); BOOL isDead() { return isState(DEAD); } BOOL isState(U32 state) const; BOOL isOcclusionState(U32 state) const { return mOcclusionState[LLViewerCamera::sCurCameraID] & state ? TRUE : FALSE; } U32 getState() { return mState; } void setState(U32 state); void clearState(U32 state); void clearDrawMap(); void validate(); void checkStates(); void validateDrawMap(); void setState(U32 state, S32 mode); void clearState(U32 state, S32 mode); void setOcclusionState(U32 state, S32 mode = STATE_MODE_SINGLE); void clearOcclusionState(U32 state, S32 mode = STATE_MODE_SINGLE); LLSpatialGroup* getParent(); BOOL addObject(LLDrawable *drawablep, BOOL add_all = FALSE, BOOL from_octree = FALSE); BOOL removeObject(LLDrawable *drawablep, BOOL from_octree = FALSE); BOOL updateInGroup(LLDrawable *drawablep, BOOL immediate = FALSE); // Update position if it's in the group BOOL isVisible() const; BOOL isRecentlyVisible() const; void setVisible(); void shift(const LLVector4a &offset); BOOL boundObjects(BOOL empty, LLVector4a& newMin, LLVector4a& newMax); void unbound(); BOOL rebound(); void buildOcclusion(); //rebuild mOcclusionVerts void checkOcclusion(); //read back last occlusion query (if any) void doOcclusion(LLCamera* camera); //issue occlusion query void destroyGL(); void updateDistance(LLCamera& camera); BOOL needsUpdate(); F32 getUpdateUrgency() const; BOOL changeLOD(); void rebuildGeom(); void rebuildMesh(); void dirtyGeom() { setState(GEOM_DIRTY); } void dirtyMesh() { setState(MESH_DIRTY); } element_list& getData() { return mOctreeNode->getData(); } U32 getElementCount() const { return mOctreeNode->getElementCount(); } void drawObjectBox(LLColor4 col); //LISTENER FUNCTIONS virtual void handleInsertion(const TreeNode* node, LLDrawable* face); virtual void handleRemoval(const TreeNode* node, LLDrawable* face); virtual void handleDestruction(const TreeNode* node); virtual void handleStateChange(const TreeNode* node); virtual void handleChildAddition(const OctreeNode* parent, OctreeNode* child); virtual void handleChildRemoval(const OctreeNode* parent, const OctreeNode* child); //------------------- //for atlas use //------------------- //atlas void setCurUpdatingTime(U32 t) {mCurUpdatingTime = t ;} U32 getCurUpdatingTime() const { return mCurUpdatingTime ;} void setCurUpdatingSlot(LLTextureAtlasSlot* slotp) ; LLTextureAtlasSlot* getCurUpdatingSlot(LLViewerTexture* imagep, S8 recursive_level = 3) ; void setCurUpdatingTexture(LLViewerTexture* tex){ mCurUpdatingTexture = tex ;} LLViewerTexture* getCurUpdatingTexture() const { return mCurUpdatingTexture ;} BOOL hasAtlas(LLTextureAtlas* atlasp) ; LLTextureAtlas* getAtlas(S8 ncomponents, S8 to_be_reserved, S8 recursive_level = 3) ; void addAtlas(LLTextureAtlas* atlasp, S8 recursive_level = 3) ; void removeAtlas(LLTextureAtlas* atlasp, BOOL remove_group = TRUE, S8 recursive_level = 3) ; void clearAtlasList() ; public: typedef enum { BOUNDS = 0, EXTENTS = 2, OBJECT_BOUNDS = 4, OBJECT_EXTENTS = 6, VIEW_ANGLE = 8, LAST_VIEW_ANGLE = 9, V4_COUNT = 10 } eV4Index; LLVector4a mBounds[2]; // bounding box (center, size) of this node and all its children (tight fit to objects) LLVector4a mExtents[2]; // extents (min, max) of this node and all its children LLVector4a mObjectExtents[2]; // extents (min, max) of objects in this node LLVector4a mObjectBounds[2]; // bounding box (center, size) of objects in this node LLVector4a mViewAngle; LLVector4a mLastUpdateViewAngle; private: U32 mCurUpdatingTime ; //do not make the below two to use LLPointer //because mCurUpdatingTime invalidates them automatically. LLTextureAtlasSlot* mCurUpdatingSlotp ; LLViewerTexture* mCurUpdatingTexture ; std::vector< std::list > mAtlasList ; //------------------- //end for atlas use //------------------- protected: virtual ~LLSpatialGroup(); U32 mState; U32 mOcclusionState[LLViewerCamera::NUM_CAMERAS]; S32 mLODHash; static S32 sLODSeed; public: bridge_list_t mBridgeList; buffer_map_t mBufferMap; //used by volume buffers to store unique buffers per texture F32 mBuilt; OctreeNode* mOctreeNode; LLSpatialPartition* mSpatialPartition; LLPointer mVertexBuffer; LLVector4a* mOcclusionVerts; GLuint mOcclusionQuery[LLViewerCamera::NUM_CAMERAS]; U32 mBufferUsage; draw_map_t mDrawMap; S32 mVisible[LLViewerCamera::NUM_CAMERAS]; F32 mDistance; F32 mDepth; F32 mLastUpdateDistance; F32 mLastUpdateTime; F32 mPixelArea; F32 mRadius; } LL_ALIGN_POSTFIX(64); class LLGeometryManager { public: std::vector mFaceList; virtual ~LLGeometryManager() { } virtual void rebuildGeom(LLSpatialGroup* group) = 0; virtual void rebuildMesh(LLSpatialGroup* group) = 0; virtual void getGeometry(LLSpatialGroup* group) = 0; virtual void addGeometryCount(LLSpatialGroup* group, U32 &vertex_count, U32 &index_count); virtual LLVertexBuffer* createVertexBuffer(U32 type_mask, U32 usage); }; class LLSpatialPartition: public LLGeometryManager { public: LLSpatialPartition(U32 data_mask, BOOL render_by_group, U32 mBufferUsage); virtual ~LLSpatialPartition(); LLSpatialGroup *put(LLDrawable *drawablep, BOOL was_visible = FALSE); BOOL remove(LLDrawable *drawablep, LLSpatialGroup *curp); LLDrawable* lineSegmentIntersect(const LLVector3& start, const LLVector3& end, BOOL pick_transparent, S32* face_hit, // return the face hit LLVector3* intersection = NULL, // return the intersection point LLVector2* tex_coord = NULL, // return the texture coordinates of the intersection point LLVector3* normal = NULL, // return the surface normal at the intersection point LLVector3* bi_normal = NULL // return the surface bi-normal at the intersection point ); // If the drawable moves, move it here. virtual void move(LLDrawable *drawablep, LLSpatialGroup *curp, BOOL immediate = FALSE); virtual void shift(const LLVector4a &offset); virtual F32 calcDistance(LLSpatialGroup* group, LLCamera& camera); virtual F32 calcPixelArea(LLSpatialGroup* group, LLCamera& camera); virtual void rebuildGeom(LLSpatialGroup* group); virtual void rebuildMesh(LLSpatialGroup* group); BOOL visibleObjectsInFrustum(LLCamera& camera); S32 cull(LLCamera &camera, std::vector* results = NULL, BOOL for_select = FALSE); // Cull on arbitrary frustum BOOL isVisible(const LLVector3& v); virtual LLSpatialBridge* asBridge() { return NULL; } virtual BOOL isBridge() { return asBridge() != NULL; } void renderPhysicsShapes(); void renderDebug(); void renderIntersectingBBoxes(LLCamera* camera); void restoreGL(); void resetVertexBuffers(); BOOL isOcclusionEnabled(); BOOL getVisibleExtents(LLCamera& camera, LLVector3& visMin, LLVector3& visMax); public: LLSpatialGroup::OctreeNode* mOctree; BOOL mOcclusionEnabled; // if TRUE, occlusion culling is performed BOOL mInfiniteFarClip; // if TRUE, frustum culling ignores far clip plane U32 mBufferUsage; const BOOL mRenderByGroup; U32 mLODSeed; U32 mLODPeriod; //number of frames between LOD updates for a given spatial group (staggered by mLODSeed) U32 mVertexDataMask; F32 mSlopRatio; //percentage distance must change before drawables receive LOD update (default is 0.25); BOOL mDepthMask; //if TRUE, objects in this partition will be written to depth during alpha rendering U32 mDrawableType; U32 mPartitionType; }; // class for creating bridges between spatial partitions class LLSpatialBridge : public LLDrawable, public LLSpatialPartition { protected: ~LLSpatialBridge(); public: typedef std::vector > bridge_vector_t; LLSpatialBridge(LLDrawable* root, BOOL render_by_group, U32 data_mask); virtual BOOL isSpatialBridge() const { return TRUE; } virtual void updateSpatialExtents(); virtual void updateBinRadius(); virtual void setVisible(LLCamera& camera_in, std::vector* results = NULL, BOOL for_select = FALSE); virtual void updateDistance(LLCamera& camera_in, bool force_update); virtual void makeActive(); virtual void move(LLDrawable *drawablep, LLSpatialGroup *curp, BOOL immediate = FALSE); virtual BOOL updateMove(); virtual void shiftPos(const LLVector4a& vec); virtual void cleanupReferences(); virtual LLSpatialPartition* asPartition() { return this; } virtual LLSpatialBridge* asBridge() { return this; } virtual LLCamera transformCamera(LLCamera& camera); LLDrawable* mDrawable; }; class LLCullResult { public: LLCullResult(); typedef std::vector sg_list_t; typedef std::vector drawable_list_t; typedef std::vector bridge_list_t; typedef std::vector drawinfo_list_t; void clear(); sg_list_t::iterator beginVisibleGroups(); sg_list_t::iterator endVisibleGroups(); sg_list_t::iterator beginAlphaGroups(); sg_list_t::iterator endAlphaGroups(); sg_list_t::iterator beginOcclusionGroups(); sg_list_t::iterator endOcclusionGroups(); sg_list_t::iterator beginDrawableGroups(); sg_list_t::iterator endDrawableGroups(); drawable_list_t::iterator beginVisibleList(); drawable_list_t::iterator endVisibleList(); bridge_list_t::iterator beginVisibleBridge(); bridge_list_t::iterator endVisibleBridge(); drawinfo_list_t::iterator beginRenderMap(U32 type); drawinfo_list_t::iterator endRenderMap(U32 type); void pushVisibleGroup(LLSpatialGroup* group); void pushAlphaGroup(LLSpatialGroup* group); void pushOcclusionGroup(LLSpatialGroup* group); void pushDrawableGroup(LLSpatialGroup* group); void pushDrawable(LLDrawable* drawable); void pushBridge(LLSpatialBridge* bridge); void pushDrawInfo(U32 type, LLDrawInfo* draw_info); U32 getVisibleGroupsSize() { return mVisibleGroupsSize; } U32 getAlphaGroupsSize() { return mAlphaGroupsSize; } U32 getDrawableGroupsSize() { return mDrawableGroupsSize; } U32 getVisibleListSize() { return mVisibleListSize; } U32 getVisibleBridgeSize() { return mVisibleBridgeSize; } U32 getRenderMapSize(U32 type) { return mRenderMapSize[type]; } void assertDrawMapsEmpty(); private: U32 mVisibleGroupsSize; U32 mAlphaGroupsSize; U32 mOcclusionGroupsSize; U32 mDrawableGroupsSize; U32 mVisibleListSize; U32 mVisibleBridgeSize; U32 mRenderMapSize[LLRenderPass::NUM_RENDER_TYPES]; sg_list_t mVisibleGroups; sg_list_t::iterator mVisibleGroupsEnd; sg_list_t mAlphaGroups; sg_list_t::iterator mAlphaGroupsEnd; sg_list_t mOcclusionGroups; sg_list_t::iterator mOcclusionGroupsEnd; sg_list_t mDrawableGroups; sg_list_t::iterator mDrawableGroupsEnd; drawable_list_t mVisibleList; drawable_list_t::iterator mVisibleListEnd; bridge_list_t mVisibleBridge; bridge_list_t::iterator mVisibleBridgeEnd; drawinfo_list_t mRenderMap[LLRenderPass::NUM_RENDER_TYPES]; drawinfo_list_t::iterator mRenderMapEnd[LLRenderPass::NUM_RENDER_TYPES]; }; //spatial partition for water (implemented in LLVOWater.cpp) class LLWaterPartition : public LLSpatialPartition { public: LLWaterPartition(); virtual void getGeometry(LLSpatialGroup* group) { } virtual void addGeometryCount(LLSpatialGroup* group, U32 &vertex_count, U32& index_count) { } }; //spatial partition for hole and edge water (implemented in LLVOWater.cpp) class LLVoidWaterPartition : public LLWaterPartition { public: LLVoidWaterPartition(); }; //spatial partition for terrain (impelmented in LLVOSurfacePatch.cpp) class LLTerrainPartition : public LLSpatialPartition { public: LLTerrainPartition(); virtual void getGeometry(LLSpatialGroup* group); virtual LLVertexBuffer* createVertexBuffer(U32 type_mask, U32 usage); }; //spatial partition for trees class LLTreePartition : public LLSpatialPartition { public: LLTreePartition(); virtual void getGeometry(LLSpatialGroup* group) { } virtual void addGeometryCount(LLSpatialGroup* group, U32 &vertex_count, U32& index_count) { } }; //spatial partition for particles (implemented in LLVOPartGroup.cpp) class LLParticlePartition : public LLSpatialPartition { public: LLParticlePartition(); virtual void getGeometry(LLSpatialGroup* group); virtual void addGeometryCount(LLSpatialGroup* group, U32 &vertex_count, U32& index_count); virtual F32 calcPixelArea(LLSpatialGroup* group, LLCamera& camera); protected: U32 mRenderPass; }; class LLHUDParticlePartition : public LLParticlePartition { public: LLHUDParticlePartition(); }; //spatial partition for grass (implemented in LLVOGrass.cpp) class LLGrassPartition : public LLParticlePartition { public: LLGrassPartition(); }; //spatial partition for clouds (implemented in LLVOClouds.cpp) class LLCloudPartition : public LLParticlePartition { public: LLCloudPartition(); }; //class for wrangling geometry out of volumes (implemented in LLVOVolume.cpp) class LLVolumeGeometryManager: public LLGeometryManager { public: typedef enum { NONE = 0, BATCH_SORT, DISTANCE_SORT } eSortType; virtual ~LLVolumeGeometryManager() { } virtual void rebuildGeom(LLSpatialGroup* group); virtual void rebuildMesh(LLSpatialGroup* group); virtual void getGeometry(LLSpatialGroup* group); void genDrawInfo(LLSpatialGroup* group, U32 mask, std::vector& faces, BOOL distance_sort = FALSE); void registerFace(LLSpatialGroup* group, LLFace* facep, U32 type); }; //spatial partition that uses volume geometry manager (implemented in LLVOVolume.cpp) class LLVolumePartition : public LLSpatialPartition, public LLVolumeGeometryManager { public: LLVolumePartition(); virtual void rebuildGeom(LLSpatialGroup* group) { LLVolumeGeometryManager::rebuildGeom(group); } virtual void getGeometry(LLSpatialGroup* group) { LLVolumeGeometryManager::getGeometry(group); } virtual void rebuildMesh(LLSpatialGroup* group) { LLVolumeGeometryManager::rebuildMesh(group); } virtual void addGeometryCount(LLSpatialGroup* group, U32 &vertex_count, U32& index_count) { LLVolumeGeometryManager::addGeometryCount(group, vertex_count, index_count); } }; //spatial bridge that uses volume geometry manager (implemented in LLVOVolume.cpp) class LLVolumeBridge : public LLSpatialBridge, public LLVolumeGeometryManager { public: LLVolumeBridge(LLDrawable* drawable); virtual void rebuildGeom(LLSpatialGroup* group) { LLVolumeGeometryManager::rebuildGeom(group); } virtual void getGeometry(LLSpatialGroup* group) { LLVolumeGeometryManager::getGeometry(group); } virtual void rebuildMesh(LLSpatialGroup* group) { LLVolumeGeometryManager::rebuildMesh(group); } virtual void addGeometryCount(LLSpatialGroup* group, U32 &vertex_count, U32& index_count) { LLVolumeGeometryManager::addGeometryCount(group, vertex_count, index_count); } }; class LLHUDBridge : public LLVolumeBridge { public: LLHUDBridge(LLDrawable* drawablep); virtual void shiftPos(const LLVector4a& vec); virtual F32 calcPixelArea(LLSpatialGroup* group, LLCamera& camera); }; //spatial partition that holds nothing but spatial bridges class LLBridgePartition : public LLSpatialPartition { public: LLBridgePartition(); virtual void getGeometry(LLSpatialGroup* group) { } virtual void addGeometryCount(LLSpatialGroup* group, U32 &vertex_count, U32& index_count) { } }; class LLHUDPartition : public LLBridgePartition { public: LLHUDPartition(); virtual void shift(const LLVector4a &offset); }; extern const F32 SG_BOX_SIDE; extern const F32 SG_BOX_OFFSET; extern const F32 SG_BOX_RAD; extern const F32 SG_OBJ_SIDE; extern const F32 SG_MAX_OBJ_RAD; #endif //LL_LLSPATIALPARTITION_H